Technical Manual

Model DSP-223 Tone Remote Panel Operating Software 2.6

Technical Manual

March 2005 P.N. 803274 Rev D ii Vega DSP-223

Table of Contents 1 General...... 1 1.1 DSP-223 Accessories...... 1 2 Installation ...... 2 2.1 DSP-223 Power Supply...... 2 2.2 DSP-223 to Console Line Connection ...... 2 2.3 DSP-223 to Radio Connection...... 2 2.3.1 TX Audio Connection...... 2 2.3.2 RX Audio Connection ...... 3 2.3.3 PTT Connection...... 3 2.3.4 Monitor Connection ...... 3 2.3.5 Radio Frequency Control...... 4 2.3.6 CTCSS Connection ...... 4 2.4 Handset Connection ...... 4 2.5 Digital Expansion Port ...... 4 3 Level Settings...... 5 3.1 Line Receive Level Adjust Procedure...... 5 3.1.1 Revision G PCB’s with J17...... 5 3.2 Radio TX Level Adjust Procedure...... 6 3.3 Radio RX Level Adjust Procedure ...... 6 3.4 Line TX Level Adjust Procedure ...... 6 3.5 CTCSS Level (Continuous Tone coded Squelch)...... 6 3.6 DSP –223 Detection Frequencies ...... 6 4 Programming and Operation ...... 7 4.1 Software Installation ...... 7 4.2 Windows® Application Software Operation ...... 7 4.2.1 Select a Serial Port...... 7 4.2.2 DSP-223 Configuration...... 8 4.2.2.1 Function Tone Mode...... 8 4.2.2.2 CTCSS Tone ...... 8 4.2.2.3 PTT Options ...... 8 4.2.2.4 Monitor Relay Options ...... 9 4.2.2.5 EE/Error Beeps (Rev 2.0 or higher)...... 9 4.2.2.6 Line DTMF Decoder ...... 9 4.2.2.7 Audio Loop Back ...... 9 4.2.2.8 Individual Function Tone Setup ...... 10 4.2.2.8.1 Tone Active ...... 10 4.2.2.8.2 Relay...... 10 4.2.2.8.3 Relay Group...... 10 4.2.2.8.4 Relay Duration ...... 10 4.2.2.8.5 Digital Output ...... 11 4.2.2.8.6 CTCSS Frequency and Default...... 11 4.2.2.8 DIG4 Setup Button ...... 12 4.2.2.9 DIG5 Setup Button ...... 13 4.2.2.9.1 Voter/Ring Down Tone Generation ...... 13 Tone Remote iii

4.2.2.10 Set Gains Button ...... 13 4.2.2.11 Morse Code Station Identifier Setup...... 14 4.2.2.12 Save and Load Buttons ...... 14 4.2.2.13 Send and Receive Configuration from DSP-223 ...... 14 4.2.2.14 Radio TX Audio Filters...... 15 4.2.2.15 DSP-223 Audio Block Diagram...... 16 4.2.2.16 DSP-223 Frequency Response ...... 16 4.3 DTMF Responder Functions...... 18 5 Theory of Operation...... 19 5.1 DSP-223 Audio Input Paths...... 19 5.2 DSP-223 Audio Output Paths...... 19 5.3 Troubleshooting Aid...... 19 6 Loading the DSP-223 Operational Software ...... 20 7 Specific Radio Control...... 20 8 Pin out and Jumper Settings Quick Reference Table...... 21 9 Schematics and Parts Lists ...... 22 9.1 PCB P/N 750561 Revisions A to E ...... 22 9.2 PCB P/N 750561 Revision F ...... 23 9.3 PCB P/N 750561 Revision G...... 24 9.4 PCB P/N 750561 Revision H...... 25 10 Warranty, Service, Repair, and Comments...... 26 11 DSP-223 Specifications ...... 27

Table of Figures

Figure 1 DB25 Rear Connector Pin-out...... 2 Figure 2 Line Connector Pin-out ...... 2 Figure 3 6 Pin Radio Connector Pin-out...... 3 Figure 4 Windows Programming Main Screen ...... 7 Figure 5 Serial Communications Port Screen ...... 7 Figure 6 Digital Output Chart...... 11 Figure 7 CTCSS Selection Chart ...... 12 Figure 8 Digital 4 Setup Screen ...... 12 Figure 9 Digital 5 Setup Screen ...... 13 Figure 10 Gain Settings...... 13 Figure 11 Morse Code Encoder Setup Screen...... 14 Figure 12 TX Audio Parameters Screen...... 15 Figure 13 Software Audio Path Block Diagram ...... 16 Figure 14 Tx Frequency Response With No Additional Filtering ...... 16 Figure 15 Tx Frequency Response With 3.5KHz Low Pass Filter...... 17 Figure 16 Tx Frequency Response With 3.5KHz Filter and Pre-Emphasis ...... 17

Tone Remote 1

1 General Unless noted, this manual refers to DSP-223 operating software 2.6. The VegaDSP-223 tone-remote adapter provides remote control of two-way-radio base stations using any Vega tone remote consoles. The DSP-223 is also compatible with other consoles using the industry- standard sequential tone-keying format.

The DSP-223 connects to the tone remote control console(s) using any voice-grade transmission medium such as a microwave link, a leased telephone line, or a twisted-pair 600-ohm line. All DSP-223s are capable of decoding the PTT (push-to-talk/transmitter-on) tone sequence and the voice- plus-tone signals during transmission. Control tones in the voice-plus-tone signal are filtered from the transmitted voice. All models are prepared for jumper-plug conversion from two-wire-line operation to four-wire-line operation. In the four-wire mode, the panels are full duplex capable.

The DSP-223 provides the following features: PTT Relay Monitor Relay 99-digit display PTT, Monitor, and Power LED indications F1 and F2 Relays (programmable to any function tone or Revert to F1) 6 digital outputs for channel selection, completely programmable per function tone CTCSS generation (64 frequencies) Hardware and software gain control Local handset port for monitoring activity and transmission back to base or to radio Front panel test points and level set potentiometers RS-232C port on front panel for configuration via Windows application Two PTT modes and three monitor modes Eight selectable PTT frequencies Ability to pass-through to a second tone adapter with 400ms built in delay line Relays can be placed in any of four groups for separation of function Single Function tone recognition (16 function tones) Dual function tone recognition (100 function tones) Morse Code Encoder for Automatic station identification Automatic Gain Control Function Tone lock-out RX Audio Squelch Voter Status Tone Alarm Beeps Pre-Emphasis 3.5kHz Low Pass Filter

All audio inputs and outputs are transient protected.

The DSP-223 line transformers are not designed to operate on lines carrying direct current. If a DC voltage is on the line, isolate with external capacitors. If the line termination must conduct direct current, install a 600:600-ohm transformer designed for the current involved.

1.1 DSP-223 Accessories Several optional accessories are available for the DSP-223. DSP223PRG – Programming Kit, includes cable and diskette with software DSP223RACK – 1 unit high rack shelf to hold up to two DSP-223 units 0101239 – DSP-223/Relm Serial Interface Kit 650373 – DSP-223 DB25 Relm Radio Cable 301896000 – DSP-223/Kenwood x150/x180 Serial Interface Kit 2490248 – Black Handset 2 Vega DSP-223

2 Installation

2.1 DSP-223 Power Supply The DSP-223 requires a 12 to 16 volt DC, 500 mA, of clean 1-PTT NC 20-+POWER power. Two connectors are 13 12 11 10 9 8 7 6 5 4 3 2 1 14-PTT NO 8-DIG 0 provided to connect the unit to 2-PTT COM 21-DIG 1 15-MON NC 9-DIG 2 power. The first is a 2.5mm 25 24 23 22 21 20 19 18 17 16 15 14 3-MON NO 22-DIG 3 plug receptacle on the rear left 16-MON COM 10-DIG 4 of the unit. The positive 4-F1 NC 23-DIG 5 terminal is the center 17-F1 NO 11-CTCSS DB25 Rear Panel 5-F1 COM 24-RX+ conductor. The second power 18-F2 NC 12-RX- connection option is the DB25 Connector 6-F2 NO 25-TX+ connector. Figure 1 shows the 19-F2 COM 13-TX- pin out of this connector. 7-GROUND Connect an external 12 to 16 volt DC supply with the positive connected to Pin 20 Figure 1 DB25 Rear Connector Pin-out and the Ground connected to Pin 7.

2.2 DSP-223 to Console Line Connection The line connector is the right most connector on the rear of the DSP-223. Connect the two-wire leased line to pins 4 and 5 of the RJ-45 modular connector, making sure that J20 and J21 are 1 2 3 4 5 6 7 8 1) set to position A. Four-wire operation 2) Voter Input requires J20 and J21 be set to position B and 3) RX + connect the outgoing line to pins 4 and 5, and 4) TX +/ (RX + 2W) 5) TX -/ (RX - 2W) the receive pins to 3 and 6. 6) RX - 7) Note: Pins 4&5 of the Line connector are 8) Ground the RX audio from the radio. They are Connector View transmitted back down the line to the console. Pins 3&6 of the Line connector Figure 2 Line Connector Pin-out are inputs from the console and the audio present on this pair will be sent to the radio.

There are several jumper selections that must be made for the line connection. Set the jumpers according to your connection requirements.

2 Wire / 4 Wire Selection: J20 J21 RX Termination: J19 2 Wire A A 600 Ohms A 4 Wire B B 10k Ohms B

The RX termination should be placed in position “A” on J19 for a single unit at the end of a line. If multiple units are connected in parallel, only one unit should have the RX Termination jumper in the “A” position. Set J19 to “B” position for 2-wire operation.

2.3 DSP-223 to Radio Connection

2.3.1 TX Audio Connection The DSP-223 has a number of options when connecting it to the radio. Set the jumpers according to the method outlined in your radio’s owner manual. Tone Remote 3

Connection Type: J14 J15 J22 J23 Balanced 600 Ohm: B B B B Single Ended Low-Impedance: A A A A

If the microphone input of the radio is high-impedance, shielded cable is recommended. If the radio has a high-level microphone 1 2 3 4 5 6 input, move J26 to the B position, otherwise J26 should stay in the A position. The balanced 600-Ohm option is only available on the DB25 connector on the rear panel; see Figure 1 for the pin-out. If the 1) Ground 2) PTT-NO TX Audio is set to single ended mode, it can be used from the 3) PTT-COM 4) Radio RX TX+ pin on the DB25 or can be accessed on the smaller 6-pin 5) Radio TX 6) Power rear connector. The 6 Pin connector pin-out appears in Figure 3. 6 Pin Rear Connector Pinout

2.3.2 RX Audio Connection Figure 3 6 Pin Radio Connector Pin-out Set the following jumpers for the type of receive audio required: Output Type: J24 J25 J27 Balanced 600 Ohm: B B B Single Ended: A A A

Receive Input Impedance: J12 J13 8 Ohms A B (for a speaker output) 600-Ohm B A 10k Ohm B B Connect the radio receiver audio output if balanced to pins 12 and 24 of the rear panel DB25. If the receive audio is single ended pin 24 of the rear DB25 or pin 4 of the rear 6 pin connector can be used. The audio source must be after the squelch circuit, to prevent sending continuous noise to the remote console. If a high-impedance point in the receiver is used, shielded cable is recommended. Note: When the speaker output is used, the radio volume control will affect the audio levels of the DSP-223.

2.3.3 PTT Connection Connect the radio PTT circuit to the PTT relay contact terminals. Connections on the DB25 or the 6 pin connectors may be used. Usually the common of the relay contact switch is grounded and the normally open contact connects to the PTT input. It is also possible to ground the common of the relay internal to the unit by bridging the pads of JP2 with wire and soldered closed.

2.3.4 Monitor Connection Connect the radio MON circuit to the MON relay contact terminals of the DB25 connector. Usually the common of each relay contact switch is grounded and the normally open contact connects to the MON input. It is also possible to ground the common of the relay internal to the unit by bridging the pads of JP3 with wire and soldered closed. 4 Vega DSP-223

2.3.5 Radio Frequency Control The DSP-223 provides two relays that may be used for radio channel control. F1 and F2 contacts may be connected through the rear DB25 connector. Usually the common of each relay contact switch is grounded and the normally open contact connects to the radio frequency-control terminals. In addition to the two standard relay closures, six lines of digital I/O are available. These lines are open- collector transistor outputs. They can be programmed on a per line basis to generate any of 64 combinations. A programmed option is also available that does not change the digital I/O. Each line is active low and may be jumper selected to pull up to either +5v or the power supply voltage (minimum +12v). Jumper J16 is used to select the pull up voltage. The A position pulls to the power supply value and B pulls up to +5v. Refer to Section 4.2.2.9.5 Digital Output for programming the digital outputs.

2.3.6 CTCSS Connection The DSP-223 is designed to generate a full range of CTCSS frequencies. Each function tone can be assigned its own CTCSS frequency for PTT operation or a number of CTCSS tones can be set using different function tones. A single ended, capacitor coupled, low impedance output is available on pin 11 of the rear panel DB25 connector.

2.4 Handset Connection The Telex Handset (P/N 249248) may be connected to the DSP-223 to monitor receive and transmit audio. When the handset PTT switch is pressed, the DSP-223 will be key up the radio on the existing frequency and the handset microphone audio will be transmitted. Pressing the PTT-IC button on the front panel provides an intercom connection between the DSP-223 and the tone remote console.

2.5 Digital Expansion Port The Digital Expansion Port on the rear panel of the DSP-223 provides a second serial communications connection for use in controlling various base station radios. A plug-in serial add-on PCB must be installed to enable this connector. This port is configured as a function of the specific application and the data is restricted to the control of specific radios. It is not intended as a general communications port to a PC. Tone Remote 5

3 Level Settings Once the unit is connected into the system, the level potentiometers can be set as shown in Table 1. 3.1 Line Receive Level Adjust Procedure The line RX level is the first level that must be set because all of the tone decoding is based on this level. Connect an Oscilloscope, RMS voltmeter, or dBm meter to Ground (TP-12) and Line RX audio (TP-2) test points on the front of the

DSP-223. RX POT Setup for Vega DSP Based Products Inject the known highest signal level into the line Actual Max Input +10dBm Max Input 0dBm Direct Crossover RX Set RX To: Set RX To: dBm to Volts Table receive circuitry. An Input (dBm) Vrms Vpp dBm Vrms Vpp dBm dBm Vpp Vrms external generator or a 10 1.13 3.20 3 10 6.90 2.44 console can generate 9 1.02 2.88 2 9 6.25 2.21 this with a test tone 8 0.92 2.60 1 8 5.60 1.98 7 0.79 2.24 0 7 5.00 1.77 capability. Using Table 6 0.74 2.08 -1 6 4.50 1.59 1, find the value of the 5 0.68 1.92 -2 5 4.00 1.41 injected signal level in 4 0.62 1.76 -3 4 3.60 1.27 3 0.55 1.56 -4 3 3.20 1.13 the left most column 2 0.51 1.44 -5 2 2.88 1.02 (Actual RX Input (dBm)). 1 0.40 1.14 -6 1 2.60 0.92 0 0.36 1.02 -7 1.13 3.20 3 0 2.24 0.79 In the case of the DSP- -1 0.33 0.92 -8 1.02 2.88 2 -1 2.08 0.74 223 being connected as -2 0.29 0.81 -9 0.92 2.60 1 -2 1.92 0.68 a standard tone remote, -3 0.26 0.74 -10 0.79 2.24 0 -3 1.76 0.62 -4 0.22 0.63 -11 0.74 2.08 -1 -4 1.56 0.55 the MAX input +10dBm -5 0.20 0.56 -12 0.68 1.92 -2 -5 1.44 0.51 column shows the level -6 0.18 0.52 -13 0.62 1.76 -3 -6 1.14 0.40 to adjust the RX Line -7 0.16 0.46 -14 0.55 1.56 -4 -7 1.02 0.36 -8 0.14 0.41 -15 0.51 1.44 -5 -8 0.92 0.33 Potentiometer to. This -9 0.13 0.37 -16 0.40 1.14 -6 -9 0.81 0.29 assumes that the -10 0.12 0.34 -17 0.36 1.02 -7 -10 0.74 0.26 standard +10dBm Guard -11 0.11 0.30 -18 0.33 0.92 -8 -11 0.63 0.22 Tone will be used. -12 0.10 0.28 -19 0.29 0.81 -9 -12 0.56 0.20 -13 0.09 0.25 -20 0.26 0.74 -10 -13 0.52 0.18 The DSP-223 must be -14 0.22 0.63 -11 -14 0.46 0.16 -15 0.20 0.56 -12 -15 0.41 0.14 tuned to allow this -16 0.18 0.52 -13 -16 0.37 0.13 +10dBm signal to be -17 0.16 0.46 -14 -17 0.34 0.12 decoded without -18 0.14 0.41 -15 -18 0.30 0.11 -19 0.13 0.37 -16 -19 0.28 0.10 overdriving the inputs -20 0.12 0.34 -17 -20 0.25 0.09 (max 3.5Vp-p) of the Analog to Digital Table Usage: Converter (ADC). On 1) Place a known signal level into the RX terminals of the Vega device being setup. the row of the injected 2) Determine the maximum signal level that the device will see. This table supports +10 and 0 dBm 3) Using the values from #1 and #2, Lookup #1 in the left column and move to the grouping for #2 signal level, find the 4) Set the RX pot for the value in the table column that matches the measurement units of Table 1 the device attached to the Line RX level test points on the front panel. Adjust the Line RX Potentiometer (R68) until it is close to the value listed in the table. This will allow the unit to work over its entire range without saturating the ADC. Note that this measurement is a signal level measurement of the voltage that is supplied to the ADC used by the DSP to decode the various required tones.

3.1.1 Revision G PCB’s with J17 Starting with PCB Revision G, jumper J17 has been added to provide a wider decode range. With J17 in the “A” position the DSP223 will perform like previous versions. When J17 is in the “B” position, a 6dbm gain is added to the input of the ADC after PTT is engaged. Setup is different with J17 in “B”. When the DSP223 is in PTT, adjust the Line RX Potentiometer (R68) for –15dbm at Line RX audio (TP-2) test point. 6 Vega DSP-223

3.2 Radio TX Level Adjust Procedure Due to the large range of input requirements for the radios that can be connected to the DSP-223, there is not a prescribed way of setting the Radio TX levels. Radio TX test points (TP-5 & TP-6) on the front panel of the DSP-223 provide a location to measure the actual value being placed onto the radio TX inputs. The Radio TX gain potentiometer (R7) can be used to adjust these levels. Note if the unit is placed into single ended mode with jumpers J14, 15, 22, and 23 the Radio TX+ should be measured with respect to ground. The user also has the option of placing J26 into the “A” position to decrease the output of the TX line by a factor of 10. The final adjustment should allow for undistorted audio to be transmitted for the full range of transmission levels at the desired deviation. Soldering JP6 together will increase the radio TX output adjustment range. 3.3 Radio RX Level Adjust Procedure The Radio RX level input to the DSP-223’s ADC can be measured by connecting an Oscilloscope or Meter to the ground and Radio RX test jack (TP-3) on the front of the unit. The maximum expected receive level should be set so that the measurement at the test points is approximately 3.4 volts peak-to- peak or 1.2 volts RMS. This insures that the receive audio from the radio will not overdrive the input circuitry of the DSP-223. The usage of Table 1 can help facilitate this by following the directions for setting the Line RX levels. If the radio will not be generating a level above 0dBm, the 5-7 columns of the table can be used with a known input value to set the maximum level seen by the ADC. If the radio max level output will be below 0 dBm the Radio RX (R98) gain can be set higher to accommodate this. 3.4 Line TX Level Adjust Procedure The Line TX level is the last item that should be adjusted. With the unit connected to the 600 Ohm line, connect an oscilloscope, meter reading true RMS, or a meter with an output in dBm to the Line TX test points (TP-7 & TP-8) on the front of the DSP-223. There are three ways to generate the required test tone for setting the levels. The easiest is to “double click” the IC PTT button on the front panel. A 1- minute 0dBm test tone will be sent on the Line and Radio TX lines. Pressing the IC PTT button again during the tone output will turn off the output. The second option, with the receive levels already set and a console capable of generating DTMF tones onto the Line RX pair, press “*0#8”. A 15 second, 1kHz, 0dBm tone will be placed on the TX line pair. The third method to generate the tone is to move the test jumper, J11 to the “B” position. As long as the test jumper is in the “B” position, a 0dBm 1kHz tone will be placed on the TX line pair. This does require opening the case. Adjust the Line TX Potentiometer (R12) until the measured voltage is 2.2 Volts peak-to-peak, 0.77 volts RMS, or 0dBm. Soldering JP7 together will increase the Line TX output adjustment range. 3.5 CTCSS Level (Continuous Tone coded Squelch) The CTCSS Level can be measured by connecting an oscilloscope or RMS meter to the ground and CTCSS test point (TP-13) on the front of the DSP-223. With the radio connected to the CTCSS output, have the remote console key up so that CTCSS is present. Adjust the CTCSS Potentiometer (R149) until the level is as desired. 3.6 DSP –223 Detection Frequencies The DSP-223 has been factory-tuned to the following frequencies. The user of the DSP-223 has no ability to change the detection frequencies as they are coded into the software. However any actual function or output can be made to work with any existing programmed frequency. Please consult the factory for special requirements for frequency selections.

Guard tone/PTT Tone: 2175 Hz MON Function Tone: 2050 Hz Frequency Select Function Tones (where used) F1: 1950 Hz F5: 1550 Hz F9: 1150 Hz F13: 750 Hz F2: 1850 Hz F6: 1450 Hz F10: 1050 Hz F14: 650 Hz F3: 1750 Hz F7: 1350 Hz F11: 950 Hz F15: 550 Hz F4: 1650 Hz F8: 1250 Hz F12: 850 Hz F16: 450 Hz Tone Remote 7

4 Programming and Operation All programming for the DSP-223 is through an RS-232C serial port located on the front panel of the unit. Programming kit (P/N DSP223PRG) may be purchased separately from the DSP-223 and installed on a Windows 95 or newer computer. The latest DSP-223 operating software and Windows® application may also be down loaded from www.vega-signaling.com/dspsoftware.htm

4.1 Software Installation

The Windows® application file is included on the VEGA Product Information CD provided with the DSP-223. Launch the CD and click on Firmware – then click on DSP-223. Follow the instructions for saving the file to the PC. When the application starts, an opening screen as shown in Figure 4 should appear.

Figure 4 Windows Programming Main Screen

4.2 Windows® Application Software Operation

4.2.1 Select a Serial Port Clicking Com Port on the main menu screen opens the dialog box shown in Figure 5. Select either Com1 or Com2 and then click OK to close the dialog box. The Windows® application will set the serial port configuration. A 9 pin serial cable is provided to connect the DSP-223 and the PC.

NOTE: The selected port is not saved and will default to Com1 each time the software is run. Figure 5 Serial Communications Port Screen 8 Vega DSP-223

4.2.2 DSP-223 Configuration Each button and programming field is described in the sections that follow. 4.2.2.1 Function Tone Mode In the upper left corner is a selection for single or dual function tone mode. Single function tone mode requires that the controlling console generate its Guard tone and then a single 40ms function tone. Dual function tone mode requires that the controlling console generate the Guard tone and then two consecutive function tones, which are then combined to form a 00-99 function tone. The standard function tones and their frequencies are shown in the following table.

Function Tone Frequency Function Tone Frequency Number (Hz) Number (Hz) F1 1950 F9 1150 F2 1850 F10 1050 F3 1750 F11 950 F4 1650 F12 850 F5 1550 F13 750 F6 1450 F14 650 F7 1350 F15 550 F8 1250 F16 450 Dual function tones use tones F1-F10 and construct the final function tone value by combining the first received tone as the tens digit and the second received tone as the ones digit. F10 is used as a zero. For example: Function tone 9 would be transmitted as F10-F9, Function tone 43 would be F4-F3, and so forth. It is very important that DSP-223 be programmed for the type of signaling that is being sent from the controlling consoles. It is possible to put the unit into the dual tone mode and send single tones and have it recognize them correctly. This mode is more prone to errors however. The best way to make this work is to make certain that no tones are sent for 40ms after the first function tone is sent so that a no tone can be decoded. If the 2175 hold tone, or other audio is present, the DSP-223 will attempt to decode this as the second half of the dual function tone. The DSP-223 will also error beep back to the console if it was unable to decode a function sequence from the console. This consists of a short sequence of 3-4 beeps. Selecting single or dual function tone mode will set the number of function tones that can be programmed by scrolling in the data entry table between 16 and 100 respectively. 4.2.2.2 CTCSS Tone Two options are provided to set the CTCSS operation. PTT Only sets the CTCSS generator active during PTT detection only. Always On sets the CTCSS tone generator active at all times regardless of the PTT status. 4.2.2.3 PTT Options

The PTT Options Section configures the DSP-223 while PTT is active. These options control the PTT relay, R1 and R2 relays with respect to PTT, the received console PTT frequency as well as the PTT mode. PTT Frequency selects the Hold tone frequency received from the console. The selectable frequencies are: 2100 Hz 2325 Hz 2155 Hz 2600 Hz 2175 Hz 2800 Hz 2300 Hz 2970 Hz Tone Remote 9

The Repeater Mode introduces a 400ms audio delay in the transmit path and removes the Hold tone notch filter. If the unit detects a valid Guard-Function sequence, it will key up the DSP-223 immediately. With the 400ms delay, the Guard Function is repeated out the radio interface. If the DSP-223 detects the Hold tone, it will remain keyed up allowing one radio to serve as the link to another DSP-223. PTT Tone Only causes the DSP-223 to not respond to a function tone and key up on detection of a valid Hold tone. This will eliminate all options that are function tone based, but allows the DSP-223 to be used in a most basic manner. This mode is useful for alignment when only a single tone generator is available and not a tone remote console Revert to R1 energizes relay R1 at the end of a PTT sequence. It will either latch it on or energize it for the time programmed for R1 in the function tone table. For example, if F1 uses R1 and has a timer setting of zero, the Revert to R1 option will latch the R1 relay at the end of the PTT sequence. If F1 has R1 selected and has a timer value set for R1, then at the end of the PTT, R1 will latch on for the timer value and then turn off. Note that all function tones that utilize R1 must have the same timer value setting. The setup software enforces this by changing all values for R1 when one is changed. The operation of auxiliary relays R1 and R2 as a function of PTT is selectable. When selected, R1 or R2 will close at the same time as the PTT relay. Connection to the relay contacts may be made through the DB25 connector on the rear panel. No auxiliary relay operation may also be selected. 4.2.2.4 Monitor Relay Options

The MONITOR function provided in the DSP-223 decodes the valid tone sequence and provides a relay- contact closure to turn off the sub-audible-tone-decoder circuit in the radio receiver, allowing the console operator to monitor the channel for other users before transmitting (required by FCC regulations on stations equipped with continuous-tone-coded-squelch signaling). Connection to the monitor relay contacts is provided through the DB25 connector on the rear panel. On single-user stations not equipped with sub-audible signaling, or where the CTCSS decoders are disabled, the monitor function relay output may be used for any purpose such as interrogation of a status-reporting system at the station site. The monitor function may be programmed to operate in one of three modes. The DSP-223 provides three options for the MONITOR relay action. Reset on PTT resets the monitor relay when PTT goes active. Always Except PTT latches the MON relay at all times except when PTT is active, whether the monitor function tone is received or not. Momentary sets the monitor relay for a programmed period of time. 4.2.2.5 EE/Error Beeps (Rev 2.0 or higher) The DSP223 will display “EE” on the front panel LED display and transmit error beeps to the dispatch console when an un-decodable signal is received on the line RX. To defeat the error beep feature uncheck the checkbox. 4.2.2.6 Line DTMF Decoder When checked, the DSP-223 will not respond to DTMF tones sent by the console. 4.2.2.7 Audio Loop Back When checked, the DSP-223 will route all audio received at the Line RX terminals back to the Line TX terminals. In addition all functions continue to work within the DSP-223. This allows for a number of consoles to be bridged together and still monitor traffic of consoles on separate bridge segments. This function is typically used in 4-wire systems only. 10 Vega DSP-223

4.2.2.8 Individual Function Tone Setup The middle grid area of the main screen menu is used to set the actions of the DSP-223 when a particular function tone is received. The left most column is the function tone number. If the Function Tone Mode is set to single function tone, tones F1-F16 may be programmed. If the Function Tone Mode is for dual function tone, tones F00-F99 may be programmed.

4.2.2.8.1 Tone Active The Tone Active column allows the user to lockout a function tone in the DSP223. When a box is checked, the DSP-223 will respond to the selected function tones and operate as programmed.

4.2.2.8.2 Relay The Relay column allows the user to select a relay closure to be associated with a particular function tone. Selectable options are R01, R02, or no relay. Clicking the drop down list and selecting the desired relay will program the relay be closed immediately upon receipt of the function tone. NOTE: R01 = F1 and R02 = F2 with reference to the schematic.

4.2.2.8.3 Relay Group The Relay Group allows the relays to be grouped into separate functions. This sets more than one relay to be energized at any particular time by assigning separate groups. For example, if F1 has R1 selected as its relay, and F2 has R2 selected as its relay, setting the two Relay Group numbers to the same value will result in: when F1 is received R1 turns on and R2 turns off. In this scenario, F1 and F2’s relays are interlocked. If F1 and F2 have different assigned relay groups, receiving F1 does not turn off R2. Further, if a function tone has no relay selected, but has a relay group assigned that is used by another relay group, when that function is received, all relays in that group will be turned off. This allows R1 and R2 to be assigned to different groups and use other function tones with the same relay group to turn them off.

4.2.2.8.4 Relay Duration The Relay Duration sets the relay closure time. When a function tone is received, the relay closes. After the time expires, the relay will open. The timer entry is in milli seconds (i.e. 1000 mSec = 1 second). Setting the relay duration to 0 latches the relay on when the function tone is received. CAUTION: two function tones with the same relay assigned cannot have the relay close for different durations. Therefore, if the user selects R1 for F1 and F6 and set the duration for F1 to 2000ms, the F6 relay duration entry will automatically be set to 2000ms by the application software. Tone Remote 11

4.2.2.8.5 Digital Output Each function tone may be assigned a digital output. Valid entries are 0 – 64 that control the outputs labeled DIG0-DIG5. This is a binary output corresponding to the value entered. The table below shows the values and the resulting DIG0-DIG5 outputs.

An entry of 64 will cause the digital outputs to REMAIN SET at the current value and not change.

VALUE D5 D4 D3 D2 D1 D0 VALUE D5 D4 D3 D2 D1 D0 0 L L L L L L 32 H L L L L L 1 L L L L L H 33 H L L L L H 2 L L L L H L 34 H L L L H L 3 L L L L H H 35 H L L L H H 4 L L L H L L 36 H L L H L L 5 L L L H L H 37 H L L H L H 6 L L L H H L 38 H L L H H L 7 L L L H H H 39 H L L H H H 8 L L H L L L 40 H L H L L L 9 L L H L L H 41 H L H L L H 10 L L H L H L 42 H L H L H L 11 L L H L H H 43 H L H L H H 12 L L H H L L 44 H L H H L L 13 L L H H L H 45 H L H H L H 14 L L H H H L 46 H L H H H L 15 L L H H H H 47 H L H H H H 16 L H L L L L 48 H H L L L L 17 L H L L L H 49 H H L L L H 18 L H L L H L 50 H H L L H L 19 L H L L H H 51 H H L L H H 20 L H L H L L 52 H H L H L L 21 L H L H L H 53 H H L H L H 22 L H L H H L 54 H H L H H L 23 L H L H H H 55 H H L H H H 24 L H H L L L 56 H H H L L L 25 L H H L L H 57 H H H L L H 26 L H H L H L 58 H H H L H L 27 L H H L H H 59 H H H L H H 28 L H H H L L 60 H H H H L L 29 L H H H L H 61 H H H H L H 30 L H H H H L 62 H H H H H L 31 L H H H H H 63 H H H H H H 64 No Change Figure 6 Digital Output Chart NOTE: Digital output bits D4 or D5 are not active if DIG4 or DIG5 are enabled

4.2.2.8.6 CTCSS Frequency and Default This value allows the user to set the CTCSS frequency for a given function tone. When the function tone is received, the CTCSS tone generator frequency is set to the value corresponding to the number entered. An entry of 0 corresponds to no tone. If the Use Default CTCSS checkbox to the right of the CTCSS Frequency box is checked (see Figure 4), the value in the CTCSS tone box is ignored and the last selected value is generated during PTT. For example, F1 is used for all transmissions and the default CTCSS box is checked for F1. F2-F8 has different CTCSS values programmed for them without 12 Vega DSP-223 the CTCSS default box checked. Selecting F2 and then keying up on F1 will set the CTCSS tone to the value in the F2 row. Selecting F4 would set the CTCSS tone in the F4 row. When PTT is pressed, F1 is the default frequency and the F4 CTCSS tone is sent. Some consoles, such as the Vega C-1610 and 6124 have a paired mode that makes this operation very simple. The CTCSS tone lookup table appears below.

Tone # Freq. (Hz) Tone # Freq. (Hz) Tone # Freq. (Hz) Tone # Freq. (Hz) 1 33.0 17 71.9 33 123.0 49 183.5 2 35.4 18 74.4 34 127.3 50 186.2 3 36.6 19 77.0 35 131.8 51 189.9 4 37.9 20 79.7 36 136.5 52 192.8 5 39.6 21 82.5 37 141.3 53 196.6 6 44.4 22 85.4 38 146.2 54 199.5 7 47.5 23 88.5 39 151.4 55 203.5 8 49.2 24 91.5 40 156.7 56 206.5 9 51.2 25 94.8 41 159.8 57 210.7 10 53.0 26 97.4 42 162.2 58 218.1 11 54.9 27 100.0 43 165.5 59 225.7 12 56.8 28 103.5 44 167.9 60 229.1 13 58.8 29 107.2 45 171.3 61 233.6 14 63.0 30 110.9 46 173.8 62 241.8 15 67.0 31 114.8 47 177.3 63 250.3 16 69.4 32 118.8 48 179.9 64 254.1 Figure 7 CTCSS Selection Chart

4.2.2.8 DIG4 Setup Button This grouping allows the DSP-223 to mute the radio RX input in the event of an active logic signal on Pin 10 (DIG4) of the DB25 radio interface connector. Enable Dig4 as COR Input must be checked to enable the feature. Active High sets the polarity of the active logic signal. If checked, the radio RX will be muted when an active high is present and not muted when low.

The subset feature to polarity is the R1 and R2 check boxes. When one of these boxes is checked, that relay will close with the active state setting. The relay will also close from other programmed features. If RX Mute is in an active state when changing the programming to OFF, power to the DSP223 will have to be cycled to reset the RX audio path.

Figure 8 Digital 4 Setup Screen The fourth checkbox will force the DSP223 to revert to F1 programming after the entered time expires if no PTT or a COR logic changes occur.

NOTE: Digital output bits D4 or D5 are not active if DIG4 or DIG5 are enabled Tone Remote 13

4.2.2.9 DIG5 Setup Button

4.2.2.9.1 Voter/Ring Down Tone Generation

This grouping allows the DSP-223 to generate a user-defined tone on the Line TX pair in the event of an active logic signal on Pin 2 of the line connector or Pin-23 (DIG5) of the DB25 connector. Enable Tone on Dig5 Input must be checked to enable the feature. Active High sets the polarity of the active logic signal. If checked, the programmed tone will be generated when an active high is present and no tone will be generated when low. The subset feature to polarity is the R1 and R2 check boxes. When one of these boxes is checked that relay will close with the active state setting. The relay will also close from other programmed features. The Tone Frequency and Level boxes specify the frequency and the amplitude of the tone to be summed with receive audio. Entries of 300-3000Hz are valid. Typically a –20dBm signal is used. Some experimentation with this value may be required to get the proper performance.

Figure 9 Digital 5 Setup Screen

Tone On/OFF Time sets the duty cycle of the tone to create “alarm beeps” generated when DIG5 is active. Entries of 0 to 65000ms (65000ms = 65 seconds) are the allowed programmable times. An entry of zero (0) into the field generates a continuous tone.

NOTE: Digital output bits D4 or D5 are not active if DIG4 or DIG5 are enabled

4.2.2.10 Set Gains Button Figure 10 at the right shows the Gain Set dialog box. A number of gains can be controlled with this setup application. This is not a replacement to tuning the unit correctly with the potentiometers, but a supplement to allow fine-tuning of the DSP-223 operation. The Handset Sidetone Gain allows the volume of the handset speaker to be adjusted by +/- 10 dB. The Radio TX Gain allows adjustment of the amplitude of the audio sent to the radio by +/- 10dB. The Line TX Gain is used to adjust the Line TX by +/- 10dB. The CTCSS Gain allows adjustment of the CTCSS tone level by +/- 10dB.

Figure 10 Gain Settings

14 Vega DSP-223

4.2.2.11 Morse Code Station Identifier Setup

The Morse Code configures the DSP-223 to automatically send a Morse code signal at specified times or actions. The Auto Transmit Options section of the dialog box sets the automatic transmit operation. The End of Each PTT will send the programmed Morse code string at the end of each PTT sequence. The DSP-223 waits for the end of the hold tone and then extends the PTT time to send the Morse code sequence. The Timer Interval option sets the DSP- 223 to transmit the Morse code at specified time intervals. The timer begins running upon setup of this parameter either at power up or after programming. If the radio is keyed up when the timer expires, The DSP-223 will wait for the loss of hold tone and then add the Morse code sequence to the end of the transmission. Depending on the customers system, FCC requires that station identification be transmitted every 15 or 30 minutes of use. If the unit is not transmitting when the timer times out, no sequence will be sent. NOTE: The DSP-223 will not key up the radio to send the Morse code sequence. The Morse Code Frequency sets the frequency of the Morse code tone. The FCC typically requires 1200Hz unless it would cause interference. Valid entries are from 400Hz to 2000Hz. Figure 11 Morse Code Encoder Setup Screen The Morse Code Gain sets the transmit level. Valid values are from –40 to 0 dB. Use this value to set the deviation to the FCC required 40% level, based on your previous hardware gain settings. Morse Code String specifies the string of up to 50 alphanumeric characters to be transmitted. Standard punctuation characters may also be entered. NOTE: Programming the DSP-223 with a blank string disables the Morse code feature.

4.2.2.12 Save and Load Buttons The user configuration data stored in a PC may be saved and reloaded into the Windows® application with the Save Config and Load Config buttons. This allows the configuration to be stored on a local hard disk or removable floppy disk.

NOTE: Configuration data MUST be compatible with the current Windows® application version 4.2.2.13 Send and Receive Configuration from DSP-223

The Send to 223 and Recv from 223 buttons are used to transfer configuration data between the DSP- 223 and the PC. The serial port of the DSP-223 and the PC must be connected using the provided serial cable. When all of the configuration information has been entered into the Windows® application, the data may be sent to the DSP-223 by pressing the Send to 223 button. The Recv from 223 button will retrieve the configuration data from the DSP-223 and display the information in the Windows® application. The user may then wish to save the data to a PC (refer to section 4.2.2.12). If the data is transferred correctly the left decimal point will light for a few seconds and then turn off. If an error occurs, “EE” will appear in the display. The previously saved operation parameters will be restored. Tone Remote 15

4.2.2.14 Radio TX Audio Filters The TX Filters button sets the options for controlling the radio TX audio.

4.2.2.14.1 AGC The AGC checkbox adds an Automatic Gain Control or audio compression to the radio TX audio. AGC will help to increase the level of low audio, and decrease the level of loud audio, resulting in a more consistent level being transmitted.

4.2.2.14.2 Add CTCSS to TX Figure 12 TX Audio Parameters Screen When checked, Add CTCSS to TX will add the selected CTCSS tone to the TX audio stream. The CTCSS output (pin 11 of the DB25 connector) continues to be active. This allows CTCSS to be sent on radios that don’t have separate input pin for its injection into the audio stream. The user will need to make certain that no high pass filter is in place in the radio to cut off the CTCSS audio.

4.2.2.14.3 Pre-Emphasize Audio The Pre-Emphasis Audio option will add a pre-emphasis zero and pole into the radio TX audio stream. The frequency response can be seen in Figure 16

4.2.2.14.4 3.5kHz Low Pass Filter The 3.5kHz Low Pass Filter attenuates frequencies above the cutoff frequency in the transmit audio stream. The frequency response can be seen in Figure 15

16 Vega DSP-223

4.2.2.15 DSP-223 Audio Block Diagram See the previous programming sections on inserting/removing the Pre-Emphasis, AGC, 3.5kHz Low Pass Filter, and the 400ms Delay options.

Line TX Radio RX Audio Notch Audio Filter Handset Speaker + CTCSS CTCSS Audio Generator

Line RX Audio Notch Pre- 3.5kHz Radio TX AGC Filter Emphasis + Low Pass Audio

400ms Delay

Tone Detectors

Figure 13 Software Audio Path Block Diagram 4.2.2.16 DSP-223 Frequency Response

Figure 14 Tx Frequency Response With No Additional Filtering Tone Remote 17

Figure 15 Tx Frequency Response With 3.5KHz Low Pass Filter

Figure 16 Tx Frequency Response With 3.5KHz Filter and Pre-Emphasis 18 Vega DSP-223

4.3 DTMF Responder Functions A number of DTMF sequences may be sent to the DSP-223 from the console that may be used to affect the performance of the unit or initiate a test function.

The standard activation sequence that precedes each command is DTMF *0#. A 2 second timer is started upon entry of the first character of the string. If the entire control string is not entered within that timeout period, the digits are discarded and the user must re-enter the string. For routines that adjust gains, the value is adjusted and saved to the non-volatile memory.

*0#1 : Increase Radio TX Gain Sending this command will increase the Radio TX gain by 1dB. Multiple repetitions of this sequence will increase the Radio TX Gain up to +10dB.

*0#2 : Decrease Radio TX Gain Sending this command will decrease the Radio TX gain by 1dB. Multiple repetitions of this sequence will decrease the Radio TX Gain down to -10dB.

*0#3 : Increase Line TX Gain Sending this command will increase the Line TX gain by 1dB. Multiple repetitions of this sequence will increase the Line TX Gain up to +10dB.

*0#4 : Decrease Line TX Gain Sending this command will decrease the Line TX gain by 1dB. Multiple repetitions of this sequence will decrease the Line TX Gain down to -10dB.

*0#5 : Increase CTCSS Gain Sending this command will increase the CTCSS gain by 1dB. Multiple repetitions of this sequence will increase the CTCSS Gain up to +10dB.

*0#6 : Decrease CTCSS Gain Sending this command will decrease the CTCSS gain by 1dB. Multiple repetitions of this sequence will decrease the CTCSS Gain down to -10dB.

*0#7 : Loopback Line RX to Line TX This command will place the DSP-223 into the Loopback Mode. Audio received at the RX terminals of the Line interface on the DSP-223 will be echoed back onto the TX terminals. This mode lasts for approximately 15 seconds and then the DSP-223 reverts back to its normal operation.

*0#8 : Send 1kHz Tone to both Radio and Line Interfaces This command will generate a 1kHz, 10dBm, tone on both the Radio and Line TX terminals. This can be used to set the DSP-223 TX level. The tone will last for approximately 15 seconds. There are no relay closures associated with this mode.

The following DTMF sequences are enabled for control of the Kenwood x150/x180 radio Refer to Section 7 – Specific Radio Control for Adaptor Kit Information

*0#9 : Toggle SCAN Mode of the Kenwood x150/x180 Radio This command will toggle the SCAN mode of the Kenwood x150/x180 Series radio on and off.

*0#10 : Send the last Kenwood FleetSync® ANI data This command causes the DSP-223 to generate a DTMF string to the Line TX corresponding to the last seven digit Kenwood FleetSync® ANI data received by the radio. Tone Remote 19

5 Theory of Operation The DSP-223 is a Digital Signal Processor (DSP) based product. Many of the signals that once could be probed on older products, are handled within the DSP itself. This includes DTMF decoders, notch filters, tone decoders, and all of the audio summing. Most of the gain controls are also included within the software of the DSP. Because of this, hardware is simplified at the expense of software creation time and user serviceability. The next sections discuss the portions of the DSP-223 that can be tested using a common oscilloscope and voltage meter by a qualified service technician.

5.1 DSP-223 Audio Input Paths The DSP-223 has only a single stereo Analog to Digital Converter (ADC) U25. The left channel converts the Line receive audio and the right channel converts the Radio receive audio. A CMOS switch, U2, is used to break those paths and insert handset audio for transmission down the line or to the radio. Up to the point of entry into the ADC, the audio is analog and handled by standard op-amps. These paths can be followed on the schematic and probed with any high-impedance measurement device.

5.2 DSP-223 Audio Output Paths The DSP-223 has two stereo Digital to Analog Converters (DACs), U3 and U4. U4’s left channel drives the sidetone for the handset. U4’s right channel is used for the CTCSS tone generation. U3’s left channel is the line transmit audio source and the right channel of U3 is the radios transmit audio source. Once the analog signal has been reconstructed on U3 and U4, they can be measured by conventional techniques.

5.3 Troubleshooting Aid Problem Possible Solution What is position “A” on a jumper On early PCB’s the “A” position of the jumper is the double line side of plug the silkscreen around the jumper plug. The DSP223 will not decode Is the power LED on the front panel ON? Is J11 in the “A” position? If in 4-wire, make sure the console TX is connected to the DSP223 line RX. Ensure alignment procedure Section 3.1 of the manual is correct. Check telephone line continuity from dispatch console Verify that proper PTT frequency is selected Section 4.2.2.5 of the manual (Rev 2.0 operating software or higher) The DSP223 will not PTT radio Does PTT LED on front panel turn ON? Check for proper PTT relay configuration/wiring Check to see if JP2 is soldered closed (if common is grounded) Verify that proper PTT frequency is selected Section 4.2.2.5 of the manual (Rev 2.0 operating software or higher) Verify that function tone is not locked out Section 4.2.2.9.1 of the manual (Rev 2.0 operating software or higher) Radio TX audio is low or Check setup procedure Section 2.3.1 of the manual. distorted Check alignment procedure Section 3.3 of the manual. Set J26 to opposite position, recheck. EE and error beeps occur Overdriving of the Line RX ADC is occurring, adjust R68 down Turn error beeps OFF, Section 4.2.2.11 of the manual (Rev 2.0 operating software or higher) Radio RX audio is low or Check setup procedure Section 2.3.2 of the manual. distorted Check alignment procedure Section 3.4 of the manual. Check telephone line continuity to the dispatch console

20 Vega DSP-223

Problem Possible Solution Unable to decode DTMF Check setup procedure Section 4.2.2.4 of the manual. The DSP223 will not Monitor Does Monitor LED on front panel turn ON? function radio Check for proper Monitor relay configuration/wiring Check to see if JP3 is soldered closed (if common is grounded) Unable to program DSP223 Verify operating and programming software is the same revision. Download required files from web site www.vega-signaling.com and follow Section 6 of the manual to update DSP223 software.

Check our web site for updated Troubleshooting aids.

6 Loading the DSP-223 Operational Software 1) The latest DSP-223 operating software and Windows® application software (and all previous versions) may be downloaded from www.vega-signaling.com/dspsoftware.htm 2) Copy all included files into a directory on your PC, if they are zipped, extract them into this directory 3) From the Start->Run, or Windows Explorer, menu run the file “winmon.exe”. This file needs to be run only one time on a particular PC. It registers the drivers to communicate with the Vega products 4) Either on the desktop or from the taskbar editor, add a shortcut to the program “Flashmon.exe”. Alternately it can be run from the Start->Run menu as well. The dialog box contains a few options that can be used. 5) The first step is to put the DSP-223 into programming mode. This is done by first removing power from the unit. 6) The upper left corner of the Flashmon dialog box has a pull down menu for setting the baud rate. The DSP-223 requires this value to be set to 19200. Change the baud rate to 19200. 7) With a straight through cable connected from the PCs Com1 port, (Com1 is the only option as of now) click the “Power On” button in the dialog box and then apply power to the DSP-223. 8) After a couple seconds, the message “Power is On” will appear in the message window of the dialog box. This indicates that communications has been established with the DSP-223 and that it is now ready to accept a software download. 9) Click on the “Program…” button. Find the file for the version of software to be flashed into the DSP-223. It will always have an extension of .BNM. Usually it will be of the form DSPVXX.BNM. 10) Double click or select the file and open it to begin the download process. 11) The verify button can be used the same way as the “Program…” button but it does not write to the flash, only verifies it.

7 Specific Radio Control Operating software Version 2.6 enables the DSP-223 to control the Relm BK Series and Kenwood x150/x180 Series radios with serial commands from the Digital Expansion Port. If one of these radios is connected to the DSP-223 when power is applied, the DSP-223 will detect the presence of the radio and set the operating configuration. Standard radio control operations are PTT, monitor, and channel change (i.e. F1=channel 1, F2=channel 2, etc.). Power to the DSP-223 is provided by the radios. Additional control functions for the Kenwood x150/x180 are scan on/off, FleetSync® ANI detection and EMERGENCY message receipt. The DSP-223 will generate a DTMF string corresponding to the seven digit FleetSync® ANI format on the Line TX output. A stand-alone DTMF ANI decoder (i.e. Communications Specialists Model ST-888) must be used to display the ANI information.

Adaptor kits for the specific radios are available that contain all the hardware and cables required for control of the radio. Complete instructions are also included for installation and operation of the DSP-223. The adaptor kits are: • DSP-223/Relm Serial Interface Kit - P/N 0101239 • DSP-223/Kenwood x150/x180 Serial Interface Kit – P/N 301896000 Tone Remote 21

8 Pin out and Jumper Settings Quick Reference Table PIN ON RADIO DB25 Pin Signal Color CONNECTOR 1 = PTT N.C. Brown 2 = PTT COM Red 3 = MON N.O. Orange 4 = F1 N.C. Pink 5 = F1 COM Yellow 6 = F2 N.O. Green 7 = GROUND Lt. Green 8 = DIG 0 Blue 9 = DIG 2 Violet 10 = DIG 4 Gray 11 = CTCSS White 12 = RX- Black 13 = TX- Brown/WHT 14 = PTT N.O. Red/WHT 15 = MON N.C. Red/BLK 16 = MON.COM Orange/WHT 17 = F1 N.O. Orange/BLK 18 = F2 N.C. Pink/BLK 19 = F2 COM Yellow/BLK 20 = +V Green/WHT 21 = DIG 1 Green/BLK 22 = DIG 3 Blue/WHT 23 = DIG 5 Violet/WHT 24 = RX+ Gray/BLK 25 = TX+ Black/WHT Shell = Shield Bold Face type below denotes factory setting J11- Factory Test Jumper A B J12- Radio RX Input Impedance See Page 6 of manual A B J13- Radio RX Input Impedance See Page 6 of manual A B J14- TX Audio "A" Single Ended Low Impedance / "B" Balanced 600 Ohm A B J15- TX Audio "A" Single Ended Low Impedance / "B" Balanced 600 Ohm A B J16- Digital I/O Pull-up Voltage "A" +V / "B" +5VDC A B J19- RX Line Termination "A" 600 Ohms / "B" 10K Ohms A B J20- 2/4 Wire "A" 2-Wire / "B" 4-Wire A B J21- 2/4 Wire "A" 2-Wire / "B" 4-Wire A B J22- TX Audio "A" Single Ended Low Impedance / "B" Balanced 600 Ohm A B J23- TX Audio "A" Single Ended Low Impedance / "B" Balanced 600 Ohm A B J24- RX Audio "A" Single Ended / "B" Balanced 600 Ohm A B J25- RX Audio "A" Single Ended / "B" Balanced 600 Ohm A B J26- Radio TX Level "A" Low / "B" High A B J27- RX Audio "A" Single Ended / "B" Balanced 600 Ohm A B JP1/R95- +12V Supply to Line Connector when closed Open Closed JP2- PTT Common Grounded when closed Open Closed JP3- Monitor Common Grounded when closed Open Closed JP4- F1 Common Grounded when closed Open Closed JP5- F2 Common Grounded when closed Open Closed

22 Vega DSP-223

9 Schematics and Parts Lists 9.1 PCB P/N 750561 Revisions A to E This drawing, written description or specification Is PART NO: a proprietary product of TELEX, Lincoln, NE, and Telex Communications INC. shall not be released, disclosed, nor duplicated without the written permission of TELEX. Lincoln, Nebraska USA 879457 APPROVALS: DR BY: SBC CHKD BY:SBC APPD BY:DEE PROD:___ REV LEVEL: C DATE:01/17/2001 DATE:01/18/01 DATE:01/18/01 DATE:___ TITLE: PCB ASSY, DSP223 MAIN BOARD - BE

LN,BE PAGE 1 OF 5 APPROVALS: without thewrittenpermissionofTELEX. shall notbereleased,disclosed,norduplicated a proprietaryproductofTELEX,Lincoln,NE,and This drawing,writtendescriptionorspecificationIs TITLE:

38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 ITEM 9 8 7 6 5 4 3 2 1

LN,BE NEW 13 33 15 13 51 4 4 2 1 1 1 2 1 1 4 1 4 3 1 1 8 1 1 1 1 1 5 4 8 8 8 1 4 2 2 6 4 QTY RESISTOR TRANSISTOR INDUCTOR RELAY HEADER CONN CONN CONN HEADER HEADER CONN CONN FERRITE POLYSWITCH FUSE THYRISTOR DIODE DIODE LED DIODE LED LED LED SOCKET LED CAPACITOR CAPACITOR CAPACITOR CAPACITOR CAPACITOR CAPACITOR CAPACITOR CAPACITOR CAPACITOR CAPACITOR CAPACITOR CAPACITOR DATE:01/17/2001 DR BY:SBC TYPE 0 OHM0805 2N3904 SOT-23 820UH SPDT SMT 3 PINSMT 8 PINMODULARJACK 9 PINDB9FEMALE RJ-4 PINCONNLEADED 6 PINRTANGLEADED 20 PINSMT 25 PINDB25FEMALE DC PWRJACK2.5MM FERRITE BEAD miniSMDC050-2 1.5A SMTFUSE TVB230-050 SMD4004 MMBZ5V6ALT1 SOT-23 YELLOW RTANGLE MMBD914 SOT-23 RED RTANGLE RED LED DUAL 7SEGMENTGRN 18 PINRTANGLE GREEN RTANGLE 10UF TANT.BSIZE 3.3UF TANT.BSIZE 220PF 0805 120PF 0805 0.001UF 0805 0.047UF 0805 0.018UF 0805 1800PF 0805 0.47UF 1210 0.01UF 0805 1UF 0805 0.1UF 0805 DATE:01/18/01 CHKD BY:SBC PCB ASSY,DSP223MAINBOARD-BE DESCRIPTION Telex CommunicationsINC. DATE:01/18/01 APPD BY:DEE Lincoln, NebraskaUSA 102506000T 54671200T 723510 730142 640124 2862013 59926016 640123 2862056 640126 640136 59697000 723511T 7101045T 7101051 710106 16016481SMT 508046000T 1610631 58711000T 1610630 7602702 760309 640137 1610628 102877065T 102877021T 102881103T 102881100T 102881111T 102881185T 102881126T 72341140T 102881445T 102881123T 102881875T PART NO. 102881186T R1,R2,R3,R20,R95,R105,R139,FB13,FB14,FB15, Q31,Q32,Q33 Q22,Q23,Q24,Q25,Q26,Q27,Q28,Q29,Q30, Q13,Q14,Q15,Q16,Q17,Q18,Q19,Q20,Q21, Q1,Q2,Q3,Q4,Q5,Q6,Q7,Q8,Q9,Q10,Q11,Q12, L5,L6,L7,L8 K1,K2,K3,K4 J22,J23,J24,J25,J26,J27 J11,J12,J13,J14,J15,J16,J19,J20,J21, J9,J10 J7 J6 J5 J3,J4 J2 J1 FB10,FB11,FB12,FB19 FB1,FB2,FB3,FB4,FB5,FB6,FB7,FB8,FB9, F6,F7,F8,F9 F1 E1,E2,E3,E4 D10,D11,D12 D9 D8 D5,D6,D7,D13,D14,D15,D16,D17 D4 D3 D2 FOR D2 D1 C96,C97,C98,C99 C46,C47,C63,C64,C65,C73,C79,C80 C43,C50,C54,C58,C75,C83,C88,C92 C42,C51,C55,C59,C74,C84,C89,C93 C34 C30,C31,C39,C40 C29,C33 C22,C27 C21,C24,C77,C82,C87,C91 C19,C20,C26,C36 C112,C113,C114,C115,C116,C117 C85,C86,C90,C94,C95,C107,C108,C109, C67,C68,C69,C70,C71,C72,C76,C78,C81, C32,C35,C37,C41,C44,C60,C61,C62,C66, C13,C14,C15,C16, C103,C104 DESIGNATOR C1,C2,C3,C4,C5,C6,C7,C8,C9,C10,C11, DATE:___ PROD:___ ,C106,C110,C111 C18,C23,C25,C28, PART NO: REV LEVEL: 879457 Page 2of5 C APPROVALS: without thewrittenpermissionofTELEX. shall notbereleased,disclosed,norduplicated a proprietaryproductofTELEX,Lincoln,NE,and This drawing,writtendescriptionorspecificationIs TITLE:

75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 ITEM

LN,BE NEW 26 65 1 3 1 1 1 1 2 1 4 2 1 2 1 1 8 2 2 1 1 1 2 4 1 6 1 4 4 3 4 7 1 5 1 QTY IC IC IC IC IC IC IC IC IC IC SOCKET PLCC IC IC IC TEST JACK TRANSFMER TRANSFMER SWITCH RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RES VAR RESISTOR RESISTOR DATE:01/17/2001 DR BY:SBC TYPE CS5330A SO8WB TL084 SO14 UA7805CKTE SMT LT1181ACSW AT24C16N SO8 ADSP-2186M TQFP100 74LCX541 SO20 UA7810CKTE SMT 74LCX574 SO20 NE5532 SO8 32 PINPLCCSOCKET CS4335 SO8 4053 SO16 TL16C550CFN ORANGE 600-600 THRU-HOLE 10K-10K THRU-HOLE PUSH BUTTONSPST 301 OHMS0805 1K 0805 681 OHMS0805 604 OHMS0805 100K 0805 332 OHMS0805 33K 0805 15 OHMS0805 267K 0805 562 OHMS0805 150 OHMS0805 20K 0805 47 OHMS0805 30K 0805 100K 10 OHMS2010 10K 0805 DATE:01/18/01 CHKD BY:SBC PCB ASSY,DSP223MAINBOARD-BE DESCRIPTION Telex CommunicationsINC. DATE:01/18/01 APPD BY:DEE Lincoln, NebraskaUSA 760264 4300047 760260T 760261 511336000T 760319 760256 760275 760257 760268 539030032T 760263 53266123 760262 2861965 3180259 3180246 57502000 102515146T 102515200 102515180T 102515175T 102515400T 102515150T 102515350T 102515017T 102515441T 102515172T 102515117T 102515329T 102515065T 102515346T 723097-3 102405100T 102515300T PART NO. U25 U22,U23,U24 U21 U20 U19 U18 U16,U17 U13 U9,U10,U11,U12 U7,U8 U6 SOCKET U3,U4 U2 U1 TP2,TP3,TP5,TP6,TP7,TP8,TP12,TP13 T3,T4 T1,T2 SW1 R107 R141,R143 R120,R123,R125,R127,R128,R130,R131, R102,R109,R111,R113,R114,R116,R117, R19,R71,R73,R74,R78,R80,R82,R83,R85,R86, R66 R64,R134 R57,R58,R97,R100 R40 R37,R59,R60,R63,R101,R104 R35 R29,R30,R45,R46 R28,R31,R44,R47 R27,R32,R61 R26,R36,R39,R52 R25,R38,R62,R70,R144,R145,R146 R24 R7,R12,R68,R98,R149 R5 R135,R138,R140,R142 R121,R122,R124,R126,R129,R132,R133, R103,R108,R110,R112,R115,R118,R119, R87,R88,R89,R90,R91,R92,R93,R94,R99, R67,R69,R72,R75,R76,R77,R79,R81,R84, R48,R49,R50,R51,R53,R54,R55,R56,R65, R17,R18,R21,R22,R23,R33,R34,R41,R42,R43, R4,R6,R8,R9,R10,R11,R13,R14,R15,R16, FB16,FB17,FB18 DESIGNATOR DATE:___ PROD:___ PART NO: REV LEVEL: 879457 Page 3of5 C APPROVALS: without thewrittenpermissionofTELEX. shall notbereleased,disclosed,norduplicated a proprietaryproductofTELEX,Lincoln,NE,and This drawing,writtendescriptionorspecificationIs TITLE: 81 80 82 79 78 77 76 ITEM

LN,BE NEW A/R 15 1 1 1 1 1 QTY PCB JUMPER IC SOCKET PLCC IC DATE:01/17/2001 DR BY:SBC TYPE JUMPER 32.768MHZ SOLDER PASTE PRINTED CIRCUITBOARD EPM7032AE PLCC44 44 PINPLCCSOCKET TPS70158 DATE:01/18/01 CHKD BY:SBC PCB ASSY,DSP223MAINBOARD-BE DESCRIPTION Telex CommunicationsINC. DATE:01/18/01 APPD BY:DEE Lincoln, NebraskaUSA 2515001001 750561 780186 BE738 760267-3PS 539030044 760306 PART NO. FOR Y1 U27 (PROGRAMMED) U27 SOCKET U26 DESIGNATOR DATE:___ PROD:___ PART NO: REV LEVEL: 879457 Page 4of5 C

without the written permission of TELEX. + FIDUCIAL FIDUCIAL 0.1UF C109 C111 10UF 1 F2 F5 U26

FIDUCIAL FIDUCIAL +5V 1 20 NOTES: X5 +12V NC1 NC3 TP12 TP9 TP10 TP11 U21 2 19 MTHOLE6 VIN1-1 VOUT1-1

UA7805CKTE R135 R138 REFERENCE PCB NUMBER : 750561 1 1 1 1 3 3 18 10K 10K FB13 X6 IN OUT VIN1-2 VOUT1-2 X1 1 0.1UF

1 10UF C104 0.1UF

C16 C13 4 17 MTHOLE6 + MR1 VSENSE1 FB14 MTH189 GND 2 5 16 1 X7 MR2 PG1 1 2 FB15 X2 6 15 MTHOLE6 1 EN RESET MTH189 7 14 +2.5V FB16 X8 SEQ VSENSE2 8 13 MTHOLE6 GND VOUT2-1 FB17 9 12 VIN2-1 VOUT2-2

FB18 10 11 1

0.1UF C108 VIN2-2 NC2 + C110 10UF 2 TPS70158

Mode Select R's D3 R19 +10V VDD VDD VDD TP1 R18 Q1 1 2 1 2 VDD C8 3 +2.5V U14 R14 10K U6 0.1UF 1 2N3904 1K DS1233A RESET 1 2 1 A0 12 13 D8 3 2 A0 D0 VDD VCC RESET A1 11 14 D9 10K A1 D1 +12V EED0 A2 10 15 D10 A[0:13] A2 D2 J4 J3 R20 2 A3 9 17 D11

POWERIN 2 1 A[0:13] A3 D3 A4 8 18 D12

D9 A4 D4 SENSE 1 2 D8 1 2 0 A5 7 19 D13 GND1 GND2 D[0:23] A5 D5

Leave R1 for 3.3V Parts (L) 4 1 A6 6 20 D14 D[0:23]

FL0 VDD A6 D6

3 4 A0 D9 3 4 3 A3 A2 A1 A0 A7 5 21 D15 Remove for 2.5 V Internal Parts (M) A7 D7

FL1 D23 D22 D21 D20 D19 D18 D17 D16 A8 27 J9 A8 5 6 A1 D10 5 6 A9 26

1 100 A9 VDD

1 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 A10 23 2 Digital A10 7 8 A2 D11 7 8 2 +5V A[0:13] A11 25 3 A11

D[0:23] 3 OUT1 A12 4 4 U15 VDD U5 +2.5V R8 A12 9 10 A3 D12 9 10 4 OUT2 A0 A13 28

5 C18 A13

5 INP1 LT1086CM-33 LT1118CST-25 BGH PWD PF3 FL0 FL1 FL2 D23 D22 D21 D20 D19 D18 D17 D16 0.1UF D16 29 6 Port A14 IOMS 11 12 A4 D13 11 12 6 3 2 3 1 10K GND9 D17 3 7 IN OUT C17 IN OUT A15

7 1 1 1 1 C100 GND10 D18 2 8 10UF C102 10UF 0.1UF R9 A16 C3 R-CS1 13 14 A5 D14 13 14 8 10UF C105 10UF C101 C12 A3/AD2 A2/AD1 A1/AD0 PWDACK D19 30 + + + +

A17 0.1UF

GND GND A4 1 VDDEXT4 75 D15 D20 1

1 2 10K A4/IAD3 D15 A18 RD 15 16 D15 15 16 0.1UF A5 2 74 D14 R13 A5/IAD4 D14 +2.5V 2 2 2 2 3 PF0-MODEA PF1-MODEB PF2-MODEC 73 D13

EECLK GND1 D13 D[0:23] WR 17 18 17 18 A6 4 72 D12 31 A6/IAD5 D12 WR A7 5 71 24 10K A7/IAD6 GND8 RD 19 20 19 20 VDD A8 6 70 D11 22 A8/IAD7 D11 CS A9 7 69 D10 Y1 A9/IAD8 D10 +10V A10 8 ADSP-2189M 68 D9 AT29LV020 1 4 A10/IAD9 D9 U13 NC VDD A11 9 67 C5 A11/IAD10 TQFP100 VDDEXT3 0.1UF A12 10 66

0 0 0 UA7810CKTE 2 3 A12/IAD11 GND7

R1 R2 R3 GND OUT A13 11 65 D8 1 3 A13/IAD12 D8 IN OUT 12 U18 64 D7

1 37-5MHZ GND2 D7/IWR

2 2 2 0.1UF 13 63 D6

10UF 0.1UF C14 +2.5V CLKIN D6/IRD +

D12 D10 D11 C103 14 62 D5

GND XTAL D5/IAL

C15 2 VDD 15 61 D4 2 VDD VDDEXT1 D4/IS 2 16 60

2 CLKOUT GND6

1 1 1 17 59 GND3 VDDINT2 18 58 D3 VDDINT1 D3/IACK J1 19 57 D2 2 WR D2/IAD15 20 56 D1 RD D1/IAD14 21 55 D0 BMS D0/IAD13 22 54

3 2 1 F1 3A DMS BG

+10V A[0:13] C4 23 53 C11

R4 1 0.1UF PMS EBG 0.1UF

FL0B FL1B 10K 24 52 IOMS BR 25 51 D5 VDD CMS EBR TP4 C9 R51 RESET IRQE+PF4 IRQL0+PF5 GND4 IRQL1+PF6 IRQ2+PF7 DT0 TFS0 RFS0 DR0 SCLK0 VDDEXT2 DT1 TFS1 RFS1 DR1 GND5 SCLK1 ERESET RESET EMS EE ECLK ELOUT ELIN EINT A5 A4 A3 0.1UF

681 10K POWERIN R66 HPTT 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 J6 0.1UF R52 U23 VDD 1 2 R17 R10 R11 R15

MIC 1 - 10K 10K 10K 10K 2 1 GND 2 3 20K C107 3 PTT 3 + 44 43 42 41 40

4 TL084 6 5 4 3 2 1

EAR 4 A5 A4 A3 VCCINT3 GND2 GND1 GND44 32MCLK GND42 RESET RESET

VR2.5 C7 0.1UF

VDD R-CS0 7 39 R-CS0 FS

4 3 R-CS1 8 38 R-CS1 IOMS 3900PF(OPT) +5V MCLK2 9 37 S2 R40 C36 MCLK2 SP0-RX NC2 SIDETONE 10 MAINPLD 36 GND10 SP0-TX 11 35 C6 1UF MCLK VCCIO35 332 R50 12 U27 34 C38 VDD GND12 RD 0.1UF 13 33 ICBUTTS GND13 WR 10K C35 14 32 SW1 LRCLK-OFF INTR NC1 S1 R43 0.1UF R47 15 31 1 2 C98 VCCIO15 DIV4 U23 6 2 1 16 30 - + LRCLK GND30 7 0.1UF 17 29 INTR 10K 0.018UF 562 3.3UF DIV4 INTR TP13 5 C41 R145 267K

+ C40 C10 R49 R46

TL084 7

10K U4 VA 0.1UF R38 47

R149 1 R146 SDATA VDD VR6 8 100K AOUTL 2 47 0.047U DEM/SCLK R62 W-CS0 W-CS1 GND20 CS3 GND22 VCCINT23 DAC2 DAC1 ADC1 B1 B0 18 19 20 21 22 23 24 25 26 27 28

3 47 VDD LRCK R26 5 W-CS0 U23 13 R42 AOUTR 0.1UF - C34 4 47 W-CS1 CTCSS 14 20K MCLK U19 12 10K R6 + AGND CS3 10K

TL084 6 1 8 Emulation Header C44 R41 R44 C99 CS4335 NC1 VCC1

8 9 2 1 C1 2 7 - 0.1UF + R25 NC2 TEST

3 6 1 J8 2 R16 10K 0.018UF 3.3UF 0.1UF NC3 CLK EECLK GND BG 10 10K 562 4 5 VR6 + C37 GND DATA EED0 267K

R48 R45 47 3 TL084 C39 3 4 3

10K VDD EBG BR U23 MCLK LRCLK 5 6 EBR EINT SCLK C2 SO8NB VR6 AT24C16 7 8 U2 0.1UF KEY ELIN 9 10 3 ELOUT ECLK 4 TP2 11 12 EE EMS LINERX 5 R144 13 14

9 RESET ERESET

+10V 47 0.47UF +5V C106 R70 R32 10UF 1 + 2 47 150 0.01UF C27 C24 R53 10K C25

3 0.1UF R54 TP3 2N3904 7 U25 HNDLINE 1 VA Q2 10K 1 ADC1 SDATA 2 8 AINL 2 U2 SCLK 1 3 R27 0.47UF LRCK 5 15 AINR 4 150 0.01UF MCLK RADIORX 2 C22 C21 10 AGND

+10V 6 CS5330A +10V

1800PF

R56 R21 VR6 10K BYPASS CAPS FOR: +10V 10K +5V TL084 + LINETX C29 C26 3 3 R12 +5V 1 1UF U7 U22 U24 - R55 2N3904 2 RADLINE 1 100K U2 U8 U23 1UF U22 R22 DR CHK APP TITLE C19 10K Q3 C23 10K 2 R36 0.1UF R31 C96 DEE SBC U22 6 2 1 - + 7 0.1UF 0.018UF 562 3.3UF R23 5 20K C32 10K VR2.5 DATE VEGA + C31 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 267K R34 R30

TL084 7 TL084

10K U3 VA + 12 01/15/2001 14 4 1 DAC1 - 4 1800PF SDATA 13 VR6 8 1UF U22

AOUTL R24 C20

2 30K DEM/SCLK DSP 223

C33 C112 C113 C114

3 C115 C116 C117 LRCK 5 R7 AOUTR U2 4 RADIOTX MCLK 13 100K AGND

14 6 R39 0.1UF R28 C97 CS4335 SCHEMATIC U22 9 2 1 12 - + R

8 0.018UF

11 3.3UF 10 562 DWG. NO. + 20K C28 SIZE 267K R33 R29

TL084 C30 10K 879457 TELEX COMMUNICATIONS, INC. 770660 VR6 LINCOLN, NEBRASKA NEXT MODEL D CAD GENERATED DRAWING ASS'Y 1 2 SHT. OF

A B C D A B C D VDD SHEET SHEET REVISIONS 770660 0.1UF REVISION 26 27 27 REV. LOC. REV. DESCRIPTION ECO NO. DRFT CHKR APP DATE C76 STATUS 26 This drawing, written description or specification D17

is a proprietary product of Telex, Lincoln, NE R-CS0 U17 J5 A RELEASED FOR PILOT BUILD SBC 01/15/01 GROUND PTTNO PTTCOM RAD-RX RAD-TX POWER

and shall not be released, disclosed, nor duplicated 19 1 1 2 3 4 5 6 OE2 OE1 J2 1 2 3 4 5 6

D8 18 2 SENSE 1 14 2 15 3 16 4 17 5 18 6 19 7 20 8 21 9 22 10 23 11 24 12 25 13 RTDB25

O0 Y0 D7 1 2 3 4 5 6 7 8 9

D9 17 3 ICBUTTS 14 15 16 17 18 19 20 21 22 10 23 11 24 12 25 13 without the written permission of TELEX. O1 Y1 D10 16 4 O2 Y2 D11 15 5 O3 Y3 D6 D12 14 6 HPTT O4 Y4 D13 13 7 O5 Y5

D[0:23] D14 12 8 NOTES: O6 Y6 D15 11 9 FB19 O7 Y7 POWERIN REFERENCE PCB NUMBER : 74LCX541 PTT-NC PTT-NO PTT-COM MON-NC MON-NO MON-COM F1-NC F1-NO F1-COM F2-NC F2-NO F2-COM POWERIN DIG0 DIG1 DIG2 DIG3 DIG4 DIG5 CTCSS RX-RAD+ RX-RAD- TX-RAD+ TX-RAD- R86 1 DIG0 1 VDD

+5V +12V 1K 3 R91 R89 R90 R93 R92 10K 2N3904 R87 10K 10K 10K 10K 1 R85 TX Impedance DIG1 VDD Q15 600 Ohm: J18=A J17=A 10K 1K 3 1200 Ohm:J18=B J17=A 2 0.1UF 1800 Ohm: J18=A J17=B 2N3904 R84 J11 R105 L5 FB10

3 2 1 1 2400 Ohm: J18=B J17=B

C62 0.01UF 0.001UF B A Q14 1 0.1UF 820UH 120P

J16 10K C80 R107 0 C81 C82 C84

A C83 2 U10 2 R97 220P R83 B LINETX 301 DIG2 20 1 3 VCC OE R100 R82 1K 3 100K DIG3 19 2 D8 +12V Y0 D0 2N3904 R88 100K C79 1K 3 1 600:600 18 3 D9 R117 Y1 D1 2 U8 2N3904 R81 Q13 10K - R101 220P 4 3 1 1 17 4 D10 3 1K 2 Y2 D2 +12V 3 R104 5 2 Q12 + 10K R118 2N3904 NE5532 33K 16 5 D11 1 6 1 L6 FB9 2 Y3 D3 R116 T4

VDD 33K 0.01UF 0.001UF D[0:23] Q23 15 6 D12 10K VR6 0.1UF 820UH 120P

Y4 D4 3 1K 6 U8 C78 C77 C74 C75 0.1UF 2 - R78 7 DIG4 14 7 D13 R115 2N3904 Y5 D5 1 5 R80 C85 + DIG5 1K 3 NE5532 13 8 D14 Q22 Y6 D6 10K 1K 3 2N3904 R77 +12V 1 1 U11 2 2 U24 TP7 12 9 D15 - VR6 2N3904 R79 Y7 D7 1 1 Q10 R114 10K 1 20 3 11 10 OE VCC + Q11 2 CLK GND TL084 10K 3 1K D8 2 19 +12V 2 D0 Y0 RX Impedance-Line 1 R119 2N3904 6 U24 1 74LCX574 1 - 600 Ohm: J19=A TP8 D9 3 18 R113 7 L7 FB12 D1 Y1 Q21 10K Ohm: J19=B J21 10K 5 0.01UF 0.001UF

+ 0.1UF 120P D10 4 17 3 1K TL084 820UH

+12V HNDLINE D2 Y2 2 C90 C91 C93 C92 1 W-CS0 R112 2N3904 J20,J21=A 2W E3 D11 5 16 1 100K A R74 RADLINE D3 Y3 Q20 2 J20,J21=B 4W +12V J19 D12 6 15 10K B

1K 3 D4 Y4 A B 3 +12V 2 R68

R109 1 2 3

2N3904 R75 D[0:23] D13 7 14

1 D5 Y5 F6 R73 D1 VDD 3 1K 1 2 Q9 D14 8 13 E4 10K D6 Y6 R63 0.1UF 10K:10K 1K 3 R108 2N3904 +12V U24 13 2 0.1UF 1 - D15 9 12 LINERX 14 4 3 2N3904 R72 D7 Y7 Q18 C95 604 1 R111 12 33K R134 C61 10K + 5 2 J20 D4 10 11 TL084 L8 FB11 1 2 Q8 GND CLK 2 E1 F9 Line

10K 3 1K 6 1 0.01UF 0.001UF 1

+12V T2 0.1UF 120P 2 U9 820UH F8 J10 R110 2N3904 C86 C87 C89 C88 A 74LCX574 1 VR2.5 2 R71 1 D8 20 1 VR2.5 1 1 2 VCC OE Q19 B 2 +12V 10K 3 2 1K 3 3 19 2 D16 2 E2 3 RX+ 2 Y0 D0 W-CS1 4 2 2N3904 R76 R102 4 TX+

1 F7 5 18 3 D17 5 TX- Y1 D1 6 Q7 10K 3 1K 6 RX- 7 3 17 4 D18 7 2 Y2 D2 R103 2N3904 8 1 8

2N3904 R69 18 17 16 15 14 13 12 1 16 5 D19 Q17 Y3 D3 F1 G1 A1 B1 GND2 GND1 F2 A2 11 B2 10 10K J14, J15, J22, J23 A=Bypass, B=Transformer Q6 D[0:23] +12V 10K 15 6 D20 2 Y4 D4 PIN1OUT 2 R61 +12V J14 J15 14 7 D21 R95 Y5 D5 a1 a2 1 1 3 R141 150

13 8 D22 15 R35 Y6 D6 A A 2N3904 R65 2 2 0 1 3 1K 12 9 D23 f1 f2 J26 Y7 D7 b1 b2 B B Q4 R140 2N3904 3 3 10K 1 1 11 10 D2 2 CLK GND 3 Q31 g1 g2 A FB2 10K C47 2 0.001UF

2N3904 R67 2 120P 1 74LCX574 B

R57 220P 3 C51 C50 PIN1OUT e1 c1 e2 c2 RADIOTX Q5 600:600 10K R58 2 3 +12V 100K 4 3 W-CS0 d1 d2 R94 2N3904 100K C46 5 2 1 R131 2 U7 6 1 Q33 - R59 220P T3 10K 3 1K 1 3 +12V

+12V 2 E1 D1 C1 DP1 E2 D2 G2 C2 DP2 3 R60

R132 2N3904 1 2 3 4 5 6 7 8 9 + 2N3904 R99 1 NE5532 33K 1 R130 FB1 VDD Q30 Q16 33K 0.001UF D13 10K 120P 10K 3 1K VR6 J22 J23 0.1UF 2 6 U7 C42 C43 2 - R129 2N3904 7 1 1 1 C94 5 K1 + Q29 NE5532 A A 10K 2 2 8 +3 +12V U12 2 B B 6 VR6 3 3 NC R128 1 20 OE VCC PTT-NC 1 3 1K 5 D16 2 19 +12V D0 Y0 PTT-NO 10 R133 2N3904 1 J24, J25 A=Bypass, B=Transformer 1 TP5 D17 3 18 R127 D1 Y1 FB4 PTT-COM 10K Q28

0.001UF 1

D18 4 17 3 1K 120P TP6 D2 Y2 2 J24 J25

1 C59 C58 R126 2N3904 D19 5 16 1 1 1 D3 Y3 JP2 Q27 100K +12V A A J13 TX-RAD+ +12V D20 6 15 10K 2 2

D14 D4 Y4 A B 2 2

R123 R98 B B 1 2 3 TX-RAD-

D[0:23] D21 7 14 3 3

D5 Y5 1/2W

3 1K R5 D22 8 13 K2 D6 Y6

R122 2N3904 +12V R37 0.1UF 10K:10K 10 1 U24 9 8 +3 D23 9 12 - D7 Y7 Q25 RADIORX 8 4 3 604 RX-RAD+ R125 C60 R64 6 10K 10 33K 3 NC 10 11 + 5 2 3 GND CLK 2 TL084 FB3 3 1K RX-RAD-

MON-NC 1 6 1 0.001UF

T1 120P 5 R124 2N3904

74LCX574 1 J27 C55 C54 MON-NO 10 Q26 VR2.5 VR2.5 1 2 3 +12V 10K 1 MON-COM 2 A B W-CS1 A R120 2 1 B

D15 3 1K 3 J12 JP3 +12V R121 2N3904 1 2 K3 Q24 10K RX Impedance 8 +3 2 8 Ohm: J12=A, J13=B Radio 600 Ohm: J12=B,J13=A 6 +12V NC 10K Ohm: J12,J13=B F1-NC 1 R143 5 F1-NO 10 3 1K R142 2N3904 F1-COM 1 Q32 1 10K D16 +12V VDD 2 JP4 K4 2 8 +3 0.1UF Serial Interface 6 +5V NC C69 F2-NC 1 D[0:23] +5V 0.1UF 5 F2-NO 10 C72 J7

F2-COM D12 D11 D10 D9 D8 10 1

44 43 42 41 40 VDD 1 C70

1 6 5 4 3 2 1 0.1UF FB8

C68 2 0.1UF 2 JP5 0.1UF

D4 D3 D2 D1 D0 RI FB6 3

D13 7 NC1 VCC DCD DSR CTS 39 RESET 15 16 3 2 D5 MR C66 D14 8 38 D6 OUT1 2 6 4 VCC

D15 9 37 V+ GND V- 4 VDD D7 DTR 1 4

10 TL16C550C 36 C71 C1+ C2+ C67 RCLK RTS 0.1UF 3 5 5 11 PLCC44 35 U16 C1- C2- 0.1UF 5 SIN OUT2 12 34 DR CHK APP TITLE NC2 U1 NC4 1 19 U20 6 13 33 A[0:13] OE1 OE2 6 SOUT INTRPT 2 18 TXD 11 14 14 32 Y0 O0 T1IN T1OUT FB7 CS0 RXRDY 3 17 RTS 10 7 7 DEE SBC 15 31 A0 Y1 O1 T2IN T2OUT 7 CS1 A0 4 16 CS3 16 30 A1 Y2 O2 FB5 CS2 A1 5 15 8 17 29 A2 Y3 O3 RXD 12 13 8 DATE VEGA BAUDOUT A2 FL0 6 14 FL0B R1OUT R1IN Y4 O4 CTS 9 8 FL1 7 13 FL1B R2OUT R2IN 9 Y5 O5 9 01/15/2001 8 12 11 Y6 O6 4 9 11 4

XIN XOUT WR1 WR2 VSS NC3 RD1 RD2 DDIS TXRDY ADS Y7 O7 LT1181A RTDB9

18 19 20 21 22 23 24 25 26 27 28 C73 220PF 74LCX541 DSP 223 C65 220PF

C64 220PF

C63 220PF SCHEMATIC R MCLK2 INTR DWG. NO. SIZE 879457 TELEX COMMUNICATIONS, INC. 770660 WR RD LINCOLN, NEBRASKA NEXT MODEL D CAD GENERATED DRAWING ASS'Y 2 2 SHT. OF

A B C D Tone Remote 23

9.2 PCB P/N 750561 Revision F This drawing, written description or specification Is PART NO: a proprietary product of TELEX, Lincoln, NE, and Telex Communications INC. shall not be released, disclosed, nor duplicated without the written permission of TELEX. Lincoln, Nebraska USA 879457 APPROVALS: DR BY: SBC CHKD BY: APPD BY: PROD: REV LEVEL: N DATE:01/17/2001 TITLE: PCB ASSY, DSP223 MAIN BOARD - BE

REVISIONS REV DESCRIPTION ECO NO DATE APPD A RELEASED FOR PILOT BUILD 01-93-01 01/17/01 SBC B U18 TO 760319 (ADSP-2185M) 02-47-01 02/20/01 SBC C DELETED 7602533PS AND ADDED TO LINCOLN BILL DSP223 03-39-01 03/14/01 SBC D R95 NOT TO BE INSTALLED 04-01-01 04/02/01 sbc E CHANGE J7 FROM 59926016 TO 640149 04-47-01 04/12/01 SBC F ITEM 17 TELEXPN 7602702 CHAGED TO TELEXPN 58680000 04-83-01 04/18/01 SBC G ADDED C45,C48,C49, FB20, FB21-FB31 (PCB TO REV D) 09-23-01 09/11/01 SBC H ITEM 1 - DELETED C28, C32 11-93-01 11/27/01 ITEM 2 - ADDED C28 ITEM 10 - ADED C12,C17 ITEM 38 - DELETED R20 ADDED R63,R95,R96 ITEM 39 - ADDED R106,R136,R137,R147,R148,R150 ITEM 49 - DELETED R37,R63 ITEM 66 - ADDED U5 ITEM 74 - DELETED U24 ADDED ITEM 85 - R20, R37 ADDED ITEM 86 - SCHEMATIC REFERENCE PRINTED CIRCUIT BOARD TO REV E. J ADDED D18,D19,D20 TO ITEM 19. R95,R96 CHANGED TO 10K 02-60-02 02/12/02 AND ADDED TO ITEM 39. R151 ADDED TO ITEM 39 R63 TO 267K. C37 TO 1UF AND ADDED TO ITEM 2. ADDED C32,C41,C52 TO ITEM 2. ITEM 1 TO QTY OF 49 ITEM 38 TO QTY OF 11. PCB TO REV F.

LN,BE PAGE 1 OF 5 APPROVALS: This drawin without thewrittenpermissionofTELEX. shall notbereleased,disclosed,norduplicated a proprietaryproductofTELEX,Lincoln,NE,and TITLE: 64IDCO 2U 250L5,L6,L7,L8 K1,K2,K3,K4 723510 730142 J11,J12,J13,J14,J15,J16,J19,J20,J21, Q1,Q2,Q3,Q4,Q5,Q6,Q7,Q8,Q9,Q10,Q11,Q12, 54671200T 640124 J7 J9,J10 J3,J4 SPDTSMT 820UH 640149 J6 2N3904SOT-23 2862013 TRANSISTOR 640126 33 INDUCTOR 4 8PINMODULAR JACK J2 J5 3PINSMT RELAY 37 4 9PINDB9FEMALE 640123 36 RJ-4PINCONN LEADED J1 2862056 35 640136 HEADER 15 CONN FB1,FB2,FB3,FB4,FB5,FB6,FB7,FB8,FB9, 2 6PINRTANGLEADED 59697000 F1 CONN 34 1 20PINSMT 25PINDB25FEMALE E1,E2,E3,E4 CONN 33 1 DCPWRJACK 2.5MM 723511T D10,D11,D12 7101051 16016481SMT F6,F7,F8,F9 HEADER 32 1 HEADER 31 2 D3 710106 7101045T CONN 30 1 D8 D4 CONN 29 1 58680000 FERRITEBEAD 1.5ASMTFUSE 28 1610631 D9 27 1610630 D5,D6,D7,D13,D14,D15,D16,D17,D18,D19,D20 miniSMDC050-2 508046000T FERRITE SMD4004 24 58711000T POLYSWITCH 4 D2 MMBZ5V6ALT1SOT-23 YELLOWRTANGLE TVB230-050 FORD2 D1 FUSE 26 1 THYRISTOR 25 4 REDRTANGLE MMBD914SOT-23 DIODE 24 3 760309 1610628 REDLED 640137 DIODE 23 1 DUAL7SEGMENTGRN LED 22 1 21 DIODE GREENRTANGLE 11 LED 20 18PINRTANGLE 1 LED 19 1 LED 18 1 SOCKET 17 1 LED 16 1 15 14 01 AAIO 2P 8512813 C46,C47,C63,C64,C65,C73,C79,C80,C12,C17 102877065T C96,C97,C98,C99 102881103T 102877021T 10UFTANT.BSIZE 3.3UFTANT.BSIZE CAPACITOR 5 CAPACITOR 4 220PF0805 13 12 CAPACITOR 10 11 10 ITEM 9CPCTR01F00 0818TC1,C2,C3,C4,C5,C6,C7,C8,C9,C10,C11, 102881186T 0.1UF0805 CAPACITOR 49 1 AAIO 2P 8512810 C43,C50,C54,C58,C75,C83,C88,C92 102881100T C42,C51,C55,C59,C74,C84,C89,C93 C34 102881138T C30,C31,C39,C40 102881185T C29,C33 102881126T C22,C27 72341140T C19,C20,C26,C36, C28,C32,C37,C41,C52 C21,C24,C77,C82,C87,C91 102881445T 120PF0805 102881875T 102881150T 0.001UF0805 CAPACITOR 8 0.047UF0805 CAPACITOR 8 0.018UF0805 CAPACITOR 9 1 1800PF0805 CAPACITOR 8 4 0.47UF1210 CAPACITOR 7 2 0.01UF0805 CAPACITOR 6 2 1UF0805 CAPACITOR 5 6 CAPACITOR 4 9 3 2 LN,BE g

NEW , writtendescriptionorspecificationIs QTY DATE:01/17/2001 DR BY:SBC YEDSRPINPR O DESIGNATOR PARTNO. DESCRIPTION TYPE CHKD BY: PCB ASSY,DSP223MAINBOARD-BE Telex CommunicationsINC. APPD BY: Lincoln, NebraskaUSA C112,C113,C114,C115,C116,C117 C85,C86,C90,C94,C95,C107,C108,C109, C67,C68,C69,C70,C71,C72,C76,C78,C81, C35,C44,C60,C61,C62,C66, C13,C14,C15,C16,C18,C23,C25, Q31,Q32,Q33 Q22,Q23,Q24,Q25,Q26,Q27,Q28,Q29,Q30, Q13,Q14,Q15,Q16,Q17,Q18,Q19,Q20,Q21, J22,J23,J24,J25,J26,J27 FB25,FB26,FB27,FB28,FB29,FB30,FB31 FB10,FB11,FB12,FB19, FB21,FB22,FB23,FB24, C103,C10 PROD: 4 ,C106,C110,C111 PART NO: REV LEVEL: 879457 Page 2of 5 , C45,C48 N APPROVALS: This drawin without thewrittenpermissionofTELEX. shall notbereleased,disclosed,norduplicated a proprietaryproductofTELEX,Lincoln,NE,and TITLE:

42I L8 O44007U22,U23 U20 4300047 U21 760261 U19 760260T U16,U17 511336000T U18 U7,U8,U5 U13 U9,U10,U11,U12 TL084SO14 760256 UA7805CKTESMT LT1181ACSW 760319 760268 U3,U4 760275 760257 AT24C16NSO8 U2 ADSP-2186MTQFP100 74LCX541SO20 IC U1 760263 2 53266123 UA7810CKTESMT IC 1 74LCX574SO20 IC 74 1 NE5532SO8 760262 IC TP2,TP3,TP5,TP6,TP7,TP8,TP12,TP13 73 1 IC 72 1 IC 71 2 2861965 CS4335SO8 IC 70 1 U6SOCKET 4053SO16 IC 69 4 TL16C550CFN 539030032T IC 68 3 T3,T4 67 32PINPLCCSOCKET SW1 SOCKETPLCC 66 1 T1,T2 R107 IC 65 2 3180259 102515146T IC 57502000 64 ORANGE 1 R19,R71,R73,R74,R78,R80,R82,R83,R85,R86, 3180246 IC 63 1 600-600THRU-HOLE TESTJACK PUSHBUTTONSPST 62 102515200 8 10K-10KTHRU-HOLE TRANSFMER 61 2 TRANSFMER 301OHMS0805 60 2 R57,R58,R97,R100 R66 SWITCH 59 1 102515400T R64,R134 102515180T RESISTOR R59,R60,R101,R104 58 1 102515175T 57 102515350T R40 56 R29,R30,R45,R46,R63 102515150T 55 R35 1K0805 102515441T 681OHMS0805 102515017T 604OHMS0805 R26,R36,R39,R52 RESISTOR 27 R28,R31,R44,R47 RESISTOR 100K0805 102515329T 1 R27,R32,R61 102515172T RESISTOR 332OHMS0805 R24 54 2 102515117T RESISTOR 33K0805 53 102515346T 4 R25,R38,R62,R70,R144,R145,R146 RESISTOR 15OHMS0805 52 1 102515065T RESISTOR 267K0805 51 4 R7,R12,R68,R98,R149 RESISTOR 562OHMS0805 50 1 R5 RESISTOR 150OHMS0805 49 5 102405100T RESISTOR 20K0805 48 4 724097 RESISTOR 47OHMS0805 47 3 RESISTOR 30K0805 46 4 RESISTOR 100KLINEARH/ADJ 45 7 RESISTOR 10OHMS2010 44 1 R4,R6,R8,R9,R10,R11,R13,R14,R15,R16,R17,R18 43 RESVAR 102515300T 5 RESISTOR 42 1 X 41 R1,R2,R3,R105,R139,FB13,FB14,FB15, 40 102506000T 10K0805 RESISTOR 0OHM0805 73 39 RESISTOR 11 38 ITEM LN,BE g

NEW , writtendescriptionorspecificationIs QTY DATE:01/17/2001 DR BY:SBC YEDSRPINPR O DESIGNATOR PARTNO. DESCRIPTION TYPE CHKD BY: PCB ASSY,DSP223MAINBOARD-BE Telex CommunicationsINC. APPD BY: Lincoln, NebraskaUSA R141,R143, R138 R120,R123,R125,R127,R128,R130,R131, R102,R109,R111,R113,R114,R116,R117, R106,R136,R137,R147,R148,R150,R95,R96,R151 R129,R132,R133,R135,R140,R142, R115,R118,R119,R121,R122,R124,R126 R91,R92,R93,R94,R99,R103,R108,R110,R112, R76,R77,R79,R81,R84,R87,R88,R89,R90 R51,R53,R54,R55,R56,R65,R67,R69,R72,R75, R21,R22,R23,R33,R34,R41,R42,R43,R48,R49,R50 FB16,FB17,FB18 PROD: PART NO: REV LEVEL: 879457 Page 3of 5 N APPROVALS: This drawin without thewrittenpermissionofTELEX. shall notbereleased,disclosed,norduplicated a proprietaryproductofTELEX,Lincoln,NE,and TITLE: 913.6MZ708 Y1 780186 U26 FOR 2515001001 760306 U25 U27(PROGRAMMED) 760267-3PS PRINTEDCIRCUIT BOAR 32.768MHZ 760264 EPM7032AEPLCC44 JUMPER TPS70158 PCB U27SOCKET 1 CS5330ASO8WB JUMPER 15 539030044 81 1 IC 80 1 44PINPLCCSOCKET SOCKET PLCC 79 1 IC 78 1 IC 77 1 76 75 52RS80K00 0558 R20,R37 102515287 FB20 770660 BE738 C49 724039 8.06K0805 51821526 1000UFELECTHSIZE SOLDERPASTE SCHEMATIC COMMONMODE REFERENCE 0 RES 2 FERRITE 86 1 CAP 85 1 84 A/R 83 82 ITEM LN,BE g

A B C D SHEET SHEET REVISIONS 770660 REVISION REV. LOC. REV. DESCRIPTION ECO NO. DRFT CHKR APP DATE STATUS This drawing, written description or specification R139 VDD is a proprietary product of Telex, Lincoln, NE A RELEASED FOR PILOT BUILD SBC 01/15/01 2 and shall not be released, disclosed, nor duplicated 0 F3 F4 B VR6 TO TRACE FROM PLANE AND ADDED FERRITES 09-23-01 SBC 09/11/01 without the written permission of TELEX. + FIDUCIAL FIDUCIAL 0.1UF C109 C111 10UF 1 F2 F5 U26 CU24 TL084 TO U5 NE5532 AND OTHERS 11-93-01 SBC 11/27/01

FIDUCIAL FIDUCIAL +5V 1 20 ADDED MISSING TRACE FROM J15 TO C51. FIXED POTS AND IMPROVED INPUT OUTPUT X5 +12V NC1 NC3 NOTES: D CAPABILITIES. 02-60-02 SBC 02/12/02 TP12 TP9 TP10 TP11 MTHOLE6 U21 2VIN1-1 VOUT1-119 R138

UA7805CKTE R135 1 1 1 1K REFERENCE PCB NUMBER : 750561 1 3 3 18 10K ER138 FROM 10K TO 1K 03-50-02 SBC 04/03/02 X6 IN OUT VIN1-2 VOUT1-2 1 FB13 X1 0.1UF 0.1UF 1 10UF C104 C13 C16 4 17 MTHOLE6 + MR1 VSENSE1

MTH189 GND

FB14 2 5MR2 PG116 1 X7 1 2 FB15 X2 6EN RESET15 MTHOLE6 1 FB16 X8 MTH189 7SEQ VSENSE214 +2.5V

MTHOLE6 8GND VOUT2-113 FB17 9VIN2-1 VOUT2-212 1 FB18 10VIN2-2 NC211 0.1UF C108 + C110 10UF 2 TPS70158

Mode Select R's D3 R19 +10V VDD VDD C8 TP1 R18 Q1 1 2 1 2 3 U6

R14 1 10K 0.1UF 2N3904 1K RESET 1 2 1 A0 12A0 D013 D8 VDD 10K A1 11A1 D114 D9 +12V EED0 A2 10A2 D215 D10 A[0:13] 2 J4 J3 A3 9A3 D317 D11

POWERIN 2 1 A[0:13] A4 8A4 D418 D12 SENSE 1 2 D8 12 D9 A5 7 19 D13 D[0:23] A5 D5

Leave R1 for 3.3V Parts (L) A6 6A6 D620 D14 D[0:23]

FL0 VDD

3 4 A0 D9 3 4 3 A3 A2 A1 A0 A7 5 21 D15 Remove for 2.5 V Internal Parts (M) A7 D7 FL1 J9 D23 D22 D21 D20 D19 D18 D17 D16 A8 27A8 5 6 A1 D10 5 6 A9 26A9 11 100 VDD 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 A10 23A10 22 Digital 7 8 A2 D11 7 8 A[0:13] A11 25A11 33 D[0:23] OUT1 A12 4A12 44 2 9 10 A3 D12 9 10 OUT2 21 21 R8 A0 A13 28A13 55 C18 D12 D10 BGH PWD D23 D22 D21 D20 D19 D18 D17 D16 0.1UF PF3 D11 INP1 Port FL0 FL1 FL2 D16 29A14 66 IOMS 11 12 A4 D13 11 12 GND9 D17 3A15 77 10K GND10 D18 2A16 88 C3 A1/AD0 PWDACK A3/AD2 A2/AD1 R-CS1 13 14 A5 D14 13 14 1 R9 D19 30A17 0.1UF

A4 1A4/IAD3 VDDEXT4 D1575 D15 D20 1A18 RD 15 16 D15 15 16 10K A5 2A5/IAD4 D1474 D14 1 2 1000UF +2.5V

R13 3GND1 PF0-MODEA PF1-MODEB PF2-MODEC D1373 D13 D[0:23] C49 EECLK WR 17 18 17 18 + A6 4A6/IAD5 D1272 D12 31WR A7 5A7/IAD6 GND871 24RD

F1 3A 10K 19 20 19 20 VDD A8 6A8/IAD7 D1170 D11 22CS 1 2 Y1 A9 7A9/IAD8 D1069 D10 +10V A10 8A10/IAD9 ADSP-2189M D968 D9 AT29LV020 U13 1NC VDD4 A11 9A11/IAD10 VDDEXT367 C5

TQFP100 0.1UF A12 10A12/IAD11 GND766 0 0 0 UA7810CKTE 2GND OUT3 R1 R2 R3 A13 11A13/IAD12 D865 D8 1IN OUT3 12GND2 U18 D7/IWR64 D7

1 37-5MHZ

0.1UF 13CLKIN D6/IRD63 D6 10UF 0.1UF C14 +2.5V + C103 14XTAL D5/IAL62 D5 GND 2 C15 VDD 15 61 D4 2 VDD VDDEXT1 D4/IS 2 16CLKOUT GND660 2 17GND3 VDDINT259 18VDDINT1 D3/IACK58 D3 19WR D2/IAD1557 D2 1 2 20RD D1/IAD1456 D1 21BMS D0/IAD1355 D0 22DMS BG54

+10V A[0:13] C4 23 53 C11 PMS EBG 0.1UF R4 0.1UF FB20 FL0B FL1B 10K 24IOMS BR52 25 51 D5 VDD CMS EBR TP4 C9 RESET TFS0 RFS0 SCLK0 TFS1 RFS1 SCLK1

R51 IRQE+PF4 IRQL0+PF5 GND4 IRQL1+PF6 IRQ2+PF7 DT0 DR0 VDDEXT2 DT1 DR1 GND5 ERESET RESET EMS EE ECLK ELOUT ELIN EINT A5 A4 A3 0.1UF 681

10K 4 3 R66 HPTT 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 J6 J1 R52 0.1UF VDD R10 R11 11 2- U23 R17 R15 10K 10K MIC 10K 10K 22 1

GND 3 2 1 33 C107 3+ 44 43 PTT 20K 42 41 40

44 TL084 6 5 4 3 2 1

EAR A5 A4 A3 VCCINT3 GND2 GND1 GND44 32MCLK GND42 RESET RESET

VR2.5 C7 0.1UF

VDD R-CS0 7R-CS0 FS39 R-CS1 8R-CS1 IOMS38 POWERIN +5V MCLK2 9 37 S2 R40 3900PF(OPT) C36 MCLK2 SP0-RX NC2 SIDETONE 10GND10 MAINPLD SP0-TX36 C6 1UF 11MCLK VCCIO35 35 332 R50 12 U27 34 C38 VDD GND12 RD 0.1UF 13 33 ICBUTTS GND13 WR C35 14LRCLK-OFF INTR32

SW1 10K

NC1 S1 C98 15VCCIO15 DIV431

14 23 R43 C52 R47 U23 -6 21+ 16LRCLK GND3030 7 0.1UF 17DIV4 INTR29 INTR TP13 5 10K 0.018UF 562 3.3UF 267K + R145 C40 1UF C10 R46 R49

TL084 7

10K U4 0.1UF VA 47 47 R38

R149 1 R146 SDATA VDD 100K VR6 8AOUTL DEM/SCLK2 0.047U W-CS0 W-CS1 GND20 CS3 GND22 VCCINT23 DAC2 DAC1 ADC1 B1 B0

R62 18 19 20 21 22 23 24 25 26 27 28 LRCK3 47 VDD R26 5 W-CS0 U23 13 R42 AOUTR FB21 0.1UF - C34 4 47 W-CS1 CTCSS 1 2 14 20K MCLK U19 +12 R6 10K 10K AGND CS3

TL084 C99 6 18 Emulation Header C44 R41 1UF R44 CS4335 NC1 VCC1 8 - 9 21+ R25 C1 2NC2 TEST7

3NC3 CLK6 1GND BG2 R16 10K 0.1UF 0.018UF EECLK J8 10 10K 562 3.3UF 4 5 VR6 + C37 GND DATA EED0 267K R48 R45

3 TL084 C39 47 3 4 3

10K VDD EBG BR U23 MCLK LRCLK 5EBR EINT6 SCLK C2 SO8NB VR6 AT24C16 7KEY ELIN8 U2 0.1UF 9 10 3 ELOUT ECLK

4 TP2 11EE EMS12 LINERX 5 R144 13RESET ERESET14 9

+10V 47 +5V 0.47UF +5V C106 R70 R32 10UF 1 + 2 47 0.01UF

150 C24

C27 267K R63 R53 10K C25

3 0.1UF TP3

R54 2N3904 7 U25

HNDLINE 1 VA Q2 10K SDATA1 ADC1 2 8AINL U2 SCLK2 1 R27 0.47UF LRCK3 5 15 AINR MCLK4 0.01UF

RADIORX 2 150 C22 C21 10 AGND

+10V 6 CS5330A +10V

1800PF R20 VR6 R56 R21

10K 1 2 10K +10V BYPASS CAPS FOR: TL084 +5V + C29 8.06K C26 3

LINETX 11 3 R12 JP7 1 1UF U7 U22 U24 +5V - R55 2N3904 2 RADLINE 1 100K U2 U8 U23 U22 R22 2 DR CHKAPP TITLE C19 1UF

C96 10K Q3 2 C23 10K 3.3UF 1 2 DEE SBC

R36 C41 R31 0.1UF

U22 -6 21+ C48 7 0.1UF 0.018UF R23

+5 562 10K VR2.5 DATE VEGA C31 2 0.1UF 20K 1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 267K R30 R34 TL084

TL084 7

10K U3 + VA 12 U2 14 01/15/2001 - 4 13 1800PF R37 SDATA1 DAC1 13 4 VR6 8AOUTL U22

14 1 2 R24 C20 1UF DEM/SCLK2 30K DSP 223 12 C112 C33 C113 C114 1 11 8.06K 11 LRCK3 C115 C116 C117

5AOUTR 0.1UF

R7 JP6 C45 4 RADIOTX MCLK

100K 2 C97

2 AGND 2 3.3UF 6 SCHEMATIC R39 C32 R28 CS4335 U22 -9 21+ R

8 0.018UF 10 562 DWG. NO. + 20K 1UF SIZE 267K R29 R33

TL084 C30 10K 879457 TELEX COMMUNICATIONS, INC. 770660 VR6 LINCOLN, NEBRASKA NEXT MODEL D REFERENCE PCB : 750561 CAD GENERATED DRAWING ASS'Y 1 2 SHT. OF

A B C D A B C D VDD SHEET SHEET REVISIONS 770660 0.1UF REVISION 26 C76 27 27 REV. LOC. REV. DESCRIPTION ECO NO. DRFT CHKR APP DATE 26 STATUS This drawing, written description or specification D17

is a proprietary product of Telex, Lincoln, NE R-CS0 U17 J5 ARELEASED FOR PILOT BUILD SBC 01/15/01 GROUND PTTNO PTTCOM RAD-RX RAD-TX POWER

and shall not be released, disclosed, nor duplicated 19OE2 OE11 1 2 3 4 5 6 J2 1 2 3 4 5 6

D8 18O0 Y02 SENSE 1 14 2 15 3 16 4 17 5 18 6 19 7 20 8 21 9 22 10 23 11 24 12 25 13 RTDB25 2 3 4 5 6 7 8 D7 1 9 without the written permission of TELEX. D9 17O1 Y13 ICBUTTS 14 15 16 17 18 19 20 21 22 10 23 11 24 12 25 13 D10 16O2 Y24 D11 15 5 O3 Y3 D6 REFER TO SHEET 1 FOR ECO HISTORY. D12 14O4 Y46 HPTT D13 13O5 Y57

NOTES: D[0:23] D14 12O6 Y68 D15 11 9 D18 FB19 O7 Y7 DIG2

D19 POWERIN REFERENCE PCB NUMBER : 74LCX541 DIG3 D20 DIG4 PTT-NC PTT-NO PTT-COM MON-NC MON-NO MON-COM F1-NC F1-NO F1-COM F2-NC F2-NO F2-COM POWERIN DIG0 DIG1 DIG2 DIG3 DIG4 DIG5 CTCSS RX-RAD+ RX-RAD- TX-RAD+ TX-RAD- R86 FB22 1 12 DIG0 1 VDD

+5V +12V 1K 3 R151 R91 R90 R95 R96 R89 R93 R92 10K 10K 2N3904 R87 10K 10K 10K 10K 10K 10K 1 R85 FB25 TX Impedance 1 2 DIG1 VDD Q15 600 Ohm: J18=A J17=A 10K 1K 3 1200 Ohm:J18=B J17=A 2 0.1UF DIG5 1800 Ohm: J18=A J17=B 2N3904 R84 J11 R105 L5 FB10

3 2 1 1 C62 2400 Ohm: J18=B J17=B 0.01UF 0.001UF

B A Q14 1 0.1UF 820UH 120PF J16 C81 C82 10K C80 R107 0 C84

A C83 2 U10 2 R97 220PF R83 FB23 B LINETX 301 12 DIG2 20 1 3 VCC OE R100 R82 FB26 1K 3 100K 12 DIG3 19Y0 D02 D8 +12V 2N3904 R88 100K C79 1K 3 1 600:600 18 3 D9 R117 Y1 D1 2 U8 2N3904 R81 Q13 10K - R101 220PF 4 3 1 1 2 17Y2 D24 D10 3 1K 5 2 Q12 +12V 3+ R104 10K R118 2N3904 NE5532 33K 16 5 D11 1 61 L6 FB9 2 Y3 D3 R116 T4

VDD 33K 0.01UF 0.001UF D[0:23] Q23 0.1UF 120PF 15Y4 D46 D12 10K VR6 820UH 0.1UF 2 3 1K 6- U8 C78 C77 C74 C75 R78 FB24 DIG4 7 1 2 14 7 D13 R115 2N3904 Y5 D5 1 5 R80 FB27 C85 + 1 2 DIG5 1K 3 NE5532 13 8 D14 Q22 Y6 D6 10K 1K 3 2N3904 R77 +12V 1 1 U11 2 TP7 12 9 D15 VR6 2N3904 R79 Y7 D7 1 Q10 R114 10K 1OE VCC20 Q11 2 11CLK GND10 10K 3 1K C17 D8 2 19 +12V 1 2 2 D0 Y0 RX Impedance-Line 1 R119 2N3904 1 74LCX574 1 220PF 600 Ohm: J19=A TP8 D9 3 18 R113 L7 FB12 D1 Y1 Q21 10K Ohm: J19=B J21 0.01UF 10K 0.001UF 0.1UF 120PF D10 4D2 Y217 2 3 1K 820UH C90 C91 +12V HNDLINE C93 C92 1 W-CS0 100K R112 2N3904 J20,J21=A 2W E3 D11 5 16 1 A R74 RADLINE D3 Y3 Q20 2 J20,J21=B 4W +12V R68 10K J19 D12 6D4 Y415 10K B 1K 3 2 A B 3 +12V U5 -6 R109 1 2 1 2 3 2N3904 R75 D[0:23] D13 7D5 Y514 LINERX 7 R148

1 R150 F6 R73 5 1 2 D1 VDD 3 1K + 1 2 Q9 D14 8 13 NE5532 E4 10K D6 Y6 10K 10K:10K 1K 3 2 0.1UF R108 2N3904 +12V 1 4 3 D15 9D7 Y712 2N3904 R72 Q18 604

1 R111 R134 C61 10K 5 2 J20 D4 10GND CLK11 2 L8 FB11 Line 1 2 Q8 10K 6 1 E1 F9 0.001UF 10K 3 1K T2 0.01UF 1 120PF +12V 0.1UF

2 U9 C95 820UH F8 0.1UF J10 C88 C89 R110 2N3904 C86 C87 A 74LCX574 1 2 R71 R147 11 D8 20VCC OE1 Q19 1 2 21 B 2 +12V 10K 3 2 1K 3 3 19 2 D16 2 E2 3 RX+ 2 Y0 D0 W-CS1 4 2 2N3904 R76 R102 4 TX+

1 F7 5 18 3 D17 5 TX- Y1 D1 6 Q7 10K 31K 6 RX- 7 3 17 4 D18 VR2.5 7 2 Y2 D2 R103 2N3904 8 1 FB29 8

2N3904 R69 18 17 16 15 14 13 12 1 2 1 16Y3 D35 D19 Q17 11 10 10K F1 G1 A1 B1 GND2 GND1 F2 A2 B2 J14, J15, J22, J23 A=Bypass, B=Transformer Q6 D[0:23] 2 FB28 +12V 10K 15Y4 D46 D20 PIN1OUT 1 2 2 R61 +12V J14 J15 FB30 14 7 D21 1 2 Y5 D5 C28 a1 a2 1 1 2 1

3 R141 150 1

13Y6 D68 D22 15 R35

A 1UF A FB31 2N3904 R65 2 2 1 3 1K 12 9 D23 f1 f2 J26 Y7 D7 b1 b2 B B Q4 R140 2N3904 3 3

10K 1 D2 1 2 2 11CLK GND10 3 Q31 g1 g2 A FB2

10K C47 2 1 2

2 0.001UF 1

2N3904 R67 120PF 1 74LCX574 B 2 C50 R57 220PF 3 C51 Q5 PIN1OUT e1 c1 e2 c2 RADIOTX 600:600 10K R58 2 3 +12V 100K 4 3 JP1 W-CS0 d1 d2 R94 2N3904 100K C46 5 2 1 R131 2 U7 61 Q33 - R59 220PF T3 10K 3 1K 1 3 2 +12V +12V E1 D1 C1 DP1 E2 D2 G2 C2 DP2 3+ R60

R132 2N3904 1 2 3 4 5 6 7 8 9 2N3904 R99 1 NE5532 33K 1 R130 FB1 VDD Q30 Q16 33K 0.001UF D13 10K 120PF 10K 0.1UF 2 3 1K VR6 J22 J23 C43 2 6- U7 C42 R129 2N3904 7 C94 1 1 1 K1 5+ Q29 NE5532 A A 10K 2 2 83+ U12 +12V 2 B B 6 VR6 3 3 NC R128 1OE VCC20 PTT-NC 1 3 1K 5 D16 2D0 Y019 +12V PTT-NO 10 R133 2N3904 1 J24, J25 A=Bypass, B=Transformer 1 TP5 D17 3 18 R127 D1 Y1 FB4 PTT-COM 10K Q28

0.001UF 1

D18 4 17 3 1K C12 120PF TP6 D2 Y2 2 1 2 J24 J25

1 C59 C58 R126 2N3904 D19 5D3 Y316 1 220PF 1 1 JP2 Q27 +12V A A J13 TX-RAD+ +12V D20 6D4 Y415 10K 2 2

D14 100K A B 2 2

R123 B B 1 2 3 TX-RAD-

D[0:23] D21 7D5 Y514 3 3 R98 1/2W

3 1K R5 D22 8D6 Y613 10K K2 10K:10K

R122 2N3904 +12V 10 1 U5 -2 8 +3 D23 9D7 Y712 1 2 4 3 Q25 RADIORX 1 R136 604 RX-RAD+

R125 R137 R64 6 10K 3 1 2 3 NC 10 11 + 5 2 3 GND CLK 2 NE5532 FB3 3 1K 10K 6 1 RX-RAD- MON-NC 1 T1 0.001UF 5 R124 2N3904 120PF

74LCX574 1 J27 C55 C54 MON-NO 10 Q26 +12V 10K 10K 1 1 2 3 MON-COM 2 A B

W-CS1 C60 A R120 0.1UF 2 1 R106 B J12

D15 31K 21 3 JP3 +12V R121 2N3904 1 2 K3 Q24 10K RX Impedance 83+ 2 8 Ohm: J12=A, J13=B VR2.5 Radio 600 Ohm: J12=B,J13=A 6 +12V NC 10K Ohm: J12,J13=B F1-NC 1 R143 5 F1-NO 10 3 1K R142 2N3904 F1-COM 1 Q32 1 10K D16 +12V VDD 2 JP4 K4 2 8 +3 0.1UF Serial Interface 6NC C69 +5V F2-NC 1 D[0:23] +5V 0.1UF 5 F2-NO 10 C72 J7

F2-COM D12 D11 D10 D9 D8 10 11 43 42 41 40 44 VDD C70

1 6 5 4 3 2 1 0.1UF FB8

C68 2 0.1UF 2 JP5 0.1UF

D4 D3 D2 D1 D0 RI FB6 33

D13 7 NC1 VCC DCD DSR CTS 39 RESET 15 16 2 D5 MR C66 D14 8 38 D6 OUT1 2 6 4

V+ VCC V- 4

D15 9 37 GND VDD D7 DTR 1 4 C67 10 TL16C550C 36 C71 C1+ C2+ RCLK RTS 0.1UF 3 5 5 C1- C2- 0.1UF 5 11SIN PLCC44 OUT235 U16 12NC2 NC434 DR CHKAPP TITLE U1 1OE1 OE219 U20 66 13SOUT INTRPT33 A[0:13] 11 2Y0 O018 TXD T1IN T1OUT14 14CS0 RXRDY32 10 7 FB7 3Y1 O117 RTS T2IN T2OUT 77 DEE SBC 15CS1 A031 A0 4Y2 O216 CS3 16CS2 A130 A1 FB5 5Y3 O315 13 88 17BAUDOUT A229 A2 RXD 12R1OUT R1IN DATE VEGA FL0 6Y4 O414 FL0B CTS 9R2OUT R2IN8 FL1 7Y5 O513 FL1B 99 01/15/2001 8Y6 O612 11 4 9Y7 O711 4 XIN XOUT WR2 VSS WR1 NC3 RD1 RD2 DDIS TXRDY ADS LT1181A RTDB9 24 18 19 20 21 22 23 25 26 27 28 C73 220PF 74LCX541 DSP 223 C65 220PF C64 220PF SCHEMATIC C63 220PF R MCLK2 INTR DWG. NO. SIZE 879457 TELEX COMMUNICATIONS, INC. 770660 WR RD LINCOLN, NEBRASKA NEXT MODEL D REFERENCE PCB : 750561 CAD GENERATED DRAWING ASS'Y 2 2 SHT. OF

A B C D 24 Vega DSP-223

9.3 PCB P/N 750561 Revision G

This drawing, written description or specification Is PART NO: a proprietary product of TELEX, Lincoln, NE, and Telex Communications INC. shall not be released, disclosed, nor duplicated without the written permission of TELEX. Lincoln, Nebraska USA 879457 APPROVALS: DR BY: SBC CHK: APPD: PROD: REV LEVEL: P DATE:01/17/2001 TITLE: PCB ASSY, DSP223 MAIN BOARD - BE

ON NEXT REV CHANGE THE FOLLOWING item 3 use 102881150t Item 8 use 102881138t K R138 FROM 10K TO 1K. ITEM 3 TO 102881150T, ITEM 8 TO 102881138T 03-50-02 03/19/02 L ITEM 78 - DELETE 7602673PS - ADD 760519-3PS 04-20-02 04/10/02 M REVERSE CHANGE 04-20-02 05-12-02 05/03/02 N ITEM 41 CHANGED TO NEW PART # 724097 11-56-02 11/25/02 P ITEM2 TO QTY OF 10, ITEM 5 TO QTY OF 0, ITEM 10 TO QTY OF 13 11-37-02 11/25/02 ITEM 25 CHANGED PART # TO 710109, ITEM 37 QTY TO 34 ITEM 39 QTY TO 79 ITEM 54 TO QTY OF 28, ITEM 68 CHG PART # TO 760250T ADDED ITEM 87 ITEM 38 CHANGED QTY TO 12 ITEM 49 CHANGED QTY TO 5

LN,BE PAGE 1 OF 5 APPROVALS: This drawin without thewrittenpermissionofTELEX. shall notbereleased,disclosed,norduplicated a proprietaryproductofTELEX,Lincoln,NE,and TITLE: 64IDCO 2U 250L5,L6,L7,L8 K1,K2,K3,K4 723510 730142 J11,J12,J13,J14,J15,J16,J19,J20,J21, Q1,Q2,Q3,Q4,Q5,Q6,Q7,Q8,Q9,Q10,Q11,Q12, 54671200T 640124 J7 J9,J10 J3,J4 SPDTSMT 820UH 640149 J6 2N3904SOT-23 2862013 TRANSISTOR 640126 34 INDUCTOR 4 8PINMODULAR JACK J2 J5 3PINSMT 37 RELAY 4 9PINDB9FEMALE 640123 36 RJ-4PINCONN LEADED J1 2862056 35 640136 HEADER 15 CONN FB1,FB2,FB3,FB4,FB5,FB6,FB7,FB8,FB9, 2 6PINRTANGLEADED 59697000 F1 34 CONN 1 20PINSMT 25PINDB25FEMALE 33 E1,E2,E3,E4 CONN 1 DCPWRJACK2.5MM 723511T D10,D11,D12 7101051 16016481SMT 32 HEADER F6,F7,F8,F9 1 31 HEADER 2 D3 710106 30 CONN 1 D8 710109T D4 29 CONN 1 58680000 FERRITEBEAD 28 1.5ASMTFUSE 1610631 27 D9 1610630 D5,D6,D7,D13,D14,D15,D16,D17,D18,D19,D20 TECCORF1250T 508046000T FERRITE SMD4004 24 58711000T POLYSWITCH 4 D2 MMBZ5V6ALT1SOT-23 YELLOWRTANGLE TVB230-050 FORD2 26 D1 FUSE 1 25 THYRISTOR 4 REDRTANGLE 24 MMBD914SOT-23 DIODE 3 760309 1610628 REDLED 640137 23 DIODE 1 DUAL7SEGMENTGRN 22 LED 1 21 DIODE GREENRTANGLE 11 20 LED 18PINRTANGLE 1 102877065T C96,C97,C98,C99 19 LED 1 18 102877021T LED 1 17 SOCKET 1 10UFTANT.BSIZE 16 LED 1 3.3UFTANT.BSIZE 15 CAPACITOR 5 14 CAPACITOR 4 13 12 11 01 AAIO 2P 85102881103T 220PF0805 CAPACITOR 13 10 ITEM AAIO 2P 8512810 C43,C50,C54,C58,C75,C83,C88,C92 102881100T C42,C51,C55,C59,C74,C84,C89,C93 C34 102881138T C30,C31,C39,C40 102881185T 102881126T C22,C27 C21,C24,C77,C82,C87,C91 102881445T C19,C20,C26,C36, C28,C32,C37,C41,C52,C53 120PF0805 102881150T 102881875T 0.001UF0805 CAPACITOR 8 0.047UF0805 CAPACITOR 8 0.018UF0805 9 CAPACITOR 1800PF0805 1 8 CAPACITOR 4 CAPACITOR 0.47UF1210 7 0.01UF0805 6 CAPACITOR 2 5 CAPACITOR 1UF0805 6 4 CAPACITOR 10 3 2 9CPCTR01F00 0818TC1,C2,C3,C4,C5,C6,C7,C8,C9,C10,C11, 102881186T 0.1UF0805 CAPACITOR 49 1 LN,BE NEW g , writtendescriptionorspecificationIs QTY DATE:01/17/2001 DR BY:SBC YEDSRPINPR O DESIGNATOR PARTNO. DESCRIPTION TYPE CHKD BY: PCB ASSY,DSP223MAINBOARD-BE Telex CommunicationsINC. APPD BY: Lincoln, NebraskaUSA C112,C113,C114,C115,C116,C117 C85,C86,C90,C94,C95,C107,C108,C109, C67,C68,C69,C70,C71,C72,C76,C78,C81, C35,C44,C60,C61,C62,C66, C13,C14,C15,C16,C18,C23,C25, Q22,Q23,Q24,Q25,Q26,Q27,Q28,Q29,Q30, Q13,Q14,Q15,Q16,Q17,Q18,Q19,Q20,Q21, J22,J23,J24,J25,J26,J27 FB25,FB26,FB27,FB28,FB29,FB30,FB31 FB10,FB11,FB12,FB19, FB21,FB22,FB23,FB24, C103,C10 C33,C56 C46,C47,C63,C64,C65,C73,C79,C80,C12,C17,C29 PROD: 4 ,C106,C110,C111 PART NO: REV LEVEL: 879457 Page 2of 5 , C45,C48 N , APPROVALS: This drawin without thewrittenpermissionofTELEX. shall notbereleased,disclosed,norduplicated a proprietaryproductofTELEX,Lincoln,NE,and TITLE:

21I T11CW706 U20 U13 760261 U19 U16,U17 511336000T 760250T U18 U7,U8,U5 U9,U10,U11,U12 760256 LT1181ACSW 760319 760268 U3,U4 760257 AT24C16NSO8 U2 ADSP-2186MTQFP100 74LCX541SO20 U1 760263 53266123 LM317M 74LCX574SO20 IC 1 NE5532SO8 760262 IC TP2,TP3,TP5,TP6,TP7,TP8,TP12,TP13 1 72 IC 1 71 IC 2 2861965 CS4335SO8 70 IC 1 U6SOCKET 4053SO16 69 IC 4 TL16C550CFN 539030032T 68 IC 3 67 T3,T4 32PINPLCCSOCKET 66 SW1 SOCKETPLCC 1 T1,T2 R107 65 IC 2 3180259 102515146T 64 IC 57502000 ORANGE 1 R19,R71,R73,R74,R78,R80,R82,R83,R85,R86, 3180246 63 IC 1 62 600-600THRU-HOLE TESTJACK PUSH BUTTONSPST 102515200 8 61 10K-10KTHRU-HOLE TRANSFMER 2 60 TRANSFMER 301OHMS0805 2 R57,R58,R97,R100 R66 59 SWITCH 1 102515400T R64,R134 102515180T 58 RESISTOR R59,R60,R101,R104,R155 1 102515175T 57 102515350T R40 56 R29,R30,R45,R46,R63 102515150T 55 R35 1K0805 102515441T 681OHMS0805 102515017T 604OHMS0805 R26,R36,R39,R52 RESISTOR 28 R28,R31,R44,R47 RESISTOR 100K0805 102515329T 1 R27,R32,R61 102515172T 54 RESISTOR 332OHMS0805 R24 2 102515117T 53 RESISTOR 33K0805 102515346T 4 R25,R38,R62,R70,R144,R145,R146 52 RESISTOR 15OHMS0805 1 102515065T 51 RESISTOR 267K0805 5 50 RESISTOR 562OHMS0805 1 R5 R7,R12,R68,R98,R149 49 RESISTOR 150OHMS0805 5 102405100T 48 RESISTOR 20K0805 4 47 RESISTOR 47OHMS0805 3 724097 46 RESISTOR 30K0805 4 100KLINEARH.ADJUST 45 RESISTOR 7 44 RESISTOR 10OHMS2010 1 43 RESVAR 5 R4,R6,R8,R9,R10,R11,R13,R14,R15,R16,R17,R18 42 RESISTOR 1 102515300T 41 40 R1,R2,R3,R105,R139,FB13,FB14,FB15,FB16,FB17 102506000T 10K0805 RESISTOR 0OHM0805 79 39 RESISTOR 12 38 ITEM LN,BE NEW g , writtendescriptionorspecificationIs QTY DATE:01/17/2001 DR BY:SBC YEDSRPINPR O DESIGNATOR PARTNO. DESCRIPTION TYPE CHKD BY: PCB ASSY,DSP223MAINBOARD-BE Telex CommunicationsINC. APPD BY: Lincoln, NebraskaUSA R141,R143, R138,R162 R120,R123,R125,R127,R128,R130,R131, R102,R109,R111,R113,R114,R116,R117, R152,R153,R156,R157,R159,R160 R106,R136,R137,R147,R148,R150,R95,R96,R151 R129,R132,R133,R135,R140,R142, R115,R118,R119,R121,R122,R124,R126 R91,R92,R93,R94,R99,R103,R108,R110,R112, R76,R77,R79,R81,R84,R87,R88,R89,R90 R51,R53,R54,R55,R56,R65,R67,R69,R72,R75, R21,R22,R23,R33,R34,R41,R42,R43,R48,R49,R50 ,FB18,R154 Q31,Q32,Q33,Q34 PROD: PART NO: REV LEVEL: 879457 Page 3of 5 N APPROVALS: This drawin without thewrittenpermissionofTELEX. shall notbereleased,disclosed,norduplicated a proprietaryproductofTELEX,Lincoln,NE,and TITLE: 71RS69K00 0558TR161 102515281T R20,R37 102515287 FB20 770660 6.98K0805 BE738 C49 724039 8.06K0805 51821526 1000UFELECTHSIZE SOLDERPASTE SCHEMATIC RES COMMONMODE 1 REFERENCE 0 87 RES 2 86 FERRITE 1 85 CAP 1 84 83 A/R 82 913.6MZ708 Y1 780186 U26 FOR 2515001001 760306 U22,U23 U25 U27(PROGRAMMED) 760267-3PS PRINTEDCIRCUITBOAR 32.768MHZ 4300047 U21 760264 EPM7032AEPLCC44 JUMPER 760260T TPS70158 PCB U27SOCKET 1 CS5330ASO8WB JUMPER 15 TL084SO14 539030044 81 1 UA7805CKTESMT 80 IC 1 44PINPLCCSOCKET 79 SOCKETPLCC 1 78 IC 1 77 IC 1 76 IC 2 75 IC 1 74 73 ITEM LN,BE NEW g , writtendescriptionorspecificationIs QTY DATE:01/17/2001 DR BY:SBC YEDSRPINPR O DESIGNATOR PARTNO. DESCRIPTION TYPE CHKD BY: PCB ASSY,DSP223MAINBOARD-BE Telex CommunicationsINC. APPD BY: Lincoln, NebraskaUSA D 750561 PROD: PART NO: REV LEVEL: 879457 Page 4of 5 N

1 2 3 4 2 02/12/02 OF 770660 1 SBC

DSP 223 0.1UF

VEGA

D[0:23] 0.1UF

SCHEMATIC DWG. NO.

C5 SHT. C3 +2.5V VDD ECO NO. DRFT CHKR APP02-60-02 SBC DATE 03-50-0211-37-02 04/03/02 11/19/02 09-23-01 SBC 09/11/01 D8 D9 D10 D11 D12 D14 D15 D13 SIZE 13 14 15 17 18 19 20 21 D D0 D1 D2 D3 D4 D5 D6 D7 R U6 D A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 WR RD CS D 9 8 7 6 5 4 3 2 1 12 11 10 27 26 23 25 28 29 30 31 24 22 AT29LV020 APP D16 D17 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 D18 D19 D20

REVISIONS A[0:13] D[0:23]

0.1UF 10K

+10V C18 R16 CHK TITLE 2 VDD 01/15/2001 DESCRIPTION LINCOLN, NEBRASKA 1K R19 VDD 1 TELEX COMMUNICATIONS, INC. 2 DEE SBC D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 D3 2N3904 1 DATE 3 DR 2 75 52 51 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 Q1 D9 D8 BR BG D15 D14 D13 D12 D11 D10 EBG EBR D[0:23] 1 D4/IS GND8 GND7 GND6 D5/IAL D6/IRD D7/IWR D3/IACK

2 VDDINT2

D1/IAD14 D0/IAD13 D2/IAD15

VDDEXT3

D16 EINT

D16 76

NEXT ASS'Y ELIN D17

49 879457 D17 77

R18 10K ELOUT D18

D18 78

VR6 TO TRACE FROM PLANE AND ADDED FERRITES U24 TL084 TO U5 NE5532 AND OTHERS ADDED MISSING TRACE FROM J15 TO C51. FIXED POTS AND IMPROVED INPUT OUTPUT CAPABILITIES. R138 FROM 10K TO 1K INCREASED LINE SENSITIVITY AND CHANGE 10V REG TO LM317 1 ECLK D19

D19 79

2 4 6 8 10 12 14 EE GND9

46 1 80

EMS

D20 BR BG

45 D20

81 ELIN EMS

TP1 EINT

D21

RESET ECLK

D21 82

D F C 11-93-01 SBC 11/27/01 E A RELEASED FOR PILOT BUILDB SBC 01/15/01 D22 ERESET

43 ERESET D22 83

D23 SCLK1

REV. 42 D23 84

GND5 FL2

FL1 DR1

FL1 86

MODEL FL0 RFS1

EED0 39 FL0 87

J8 PF3 TFS1

C8 DT1 PF2-MODEC

0.1UF 37 LOC. 89

VDDEXT4 VDDEXT2

U18 36 90

PWD SCLK0

GND10 DR0

VDD 34 TQFP100 92

RFS0 PF1-MODEB

ADSP-2189M 33 93

GND EBG EBR KEY ELOUT EE RESET PF0-MODEA TFS0

32 1 3 5 7 9 94

11 13 Emulation Header BGH DT0

VDD

IRQ2+PF7 PWDACK

96 C6

IRQL1+PF6

A0 0.1UF

29 C48 A0 97

SHEET A1/AD0 GND4

28 1 2

STATUS A1 98

A2/AD1 IRQL0+PF5

REVISION 27 A2 99

A3/AD2 IRQE+PF4

26 0.1UF A3 100

C45

VR6 1 2 VR2.5 REV. A4/IAD3 A5/IAD4 GND1 A6/IAD5 A7/IAD6 A8/IAD7 A9/IAD8 A10/IAD9 A11/IAD10 A12/IAD11 A13/IAD12 GND2 CLKIN XTAL VDDEXT1 CLKOUT GND3 VDDINT1 WR RD BMS DMS PMS IOMS CMS SHEET 0.1UF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

10K TL084 U22

TL084 U22 A[0:13] R6 EED0 + - 3 2 + -

12 13 A5 A6 A7 A8 A9 A10 A11 A12 A13 A4 EECLK 10K

7 6 5

30K 10K

R15 CLK

TEST VCC1 DATA

10K R24 VDD 4 3 R23

+5V

OUT 0.1UF VDD EECLK R11

+2.5V U19 SO8NB

10K AT24C16

C11

Mode Select R's 1UF 10K 10K

NC1 NC2 NC3 10K GND Y1

18 2 3 4 R10 0.1UF 37-5MHZ C20

NC GND

R14 1 2 R8 R22 10K R21 10K R13 10K

C C

+10V

C4 CAD GENERATED DRAWING 1UF

VDD VDD

10K

0.1UF

VDD C19

1K C1

D9 R17

R138 1 3 0.1UF VDD

2 10K

RESET 10UF 10UF

+2.5V C7 R135 VDD

1 + 2

2 1 C110 +10V

C111

0.1UF C117

INTR 0.1UF

U24 C116

0.1UF

1UF

U23 C115

20 19 18 17 16 15 14 13 12 11 + 21

C14

29 39 38 37 36 34 33 32 31 30 PG1 0.1UF

NC2 +10V FS

RD WR U22

RESET 1K DIV4 INTR INTR

IOMS C114

VOUT2-1 VOUT2-2 VOUT1-1 VOUT1-2 GND30 VSENSE2 SP0-TX VSENSE1

SP0-RX 0.1UF

VCCIO35 U8

C113 R162

RESET

40 B0 28

RESET 0.1UF U7

41 B1

RESET 27 ADC1

42 C112 2 0

GND42 26 R139

43 DAC1

32MCLK 25 BYPASS CAPS FOR: DAC2 6.98K 47

OUT 44 U26 U2

GND44 24 VDD

1 VCCINT23 47 ADJ

GND1 23 R70 GND22

1 2 22

R161 GND2

3 CS3 R144

VCCINT3 21 U13

4 GND20 U27

A3 20 0.1UF

5 W-CS1 NC1VIN1-1 VIN1-2 MR1 MR2 EN NC3 VIN2-2 IN MAINPLD C2 LM317 SEQ GND VIN2-1 VDD

A4 19 1 2 3 4 5 6 7 8 9 3

6 W-CS0 10 A5 18 C9 TPS70158 0.1UF

+12V C15 A3

0.1UF A4

W-CS0 W-CS1 CS3 A5 R-CS0 R-CS1 MCLK2 GND10 MCLK GND12 GND13 VCCIO15 DIV4 LRCLK-OFF LRCLK R63 C103 7 8 9 A[0:13] 10 12 13 14 16 1115 17 35 C109 1 + 2 +5V

0.1UF 10UF MCLK 267K DAC1 LRCLK SCLK

C108 R38 47 ADC1

0.1UF R146 47 R-CS0 MCLK2

R-CS1 R145 C13 C49 47

1 2 1 2 3 4 1 2 3 4 +5V 0.1UF + 2

SCLK LRCK U3 MCLK

LRCK U25 SDATA 1000UF MCLK 0.1UF SDATA C106 3 + 10UF C25 C26 C23

1UF

0.1UF 0.1UF

DEM/SCLK 1

OUT

FB20

AGND

C10 7 GND AGND

+5V VA 6 7 Leave R1 for 3.3V Parts (L) Remove for 2.5 V Internal Parts (M) 6 2 +5V VA VDD

U21

D11 47 2 21 3 47 IN 1 R62 R25 CS4335 UA7805CKTE

C16 D10 3A CS5330A

21 2 1 1

4 AINL AINR F1 AOUTL AOUTR 0.1UF 8 5 D12 8 5 2 1 1 + 2

+12V C104

10UF 1 2 3 4 C24 C21 U4 LRCK

MCLK R30 R29 B B SDATA C36 1UF 0.01UF 0.01UF C35 0.1UF DEM/SCLK

0.47UF + 267K + 267K C27

7 AGND +5V 6 VA C96 3.3UF C97 C22 0.47UF 3.3UF 21 R34 21 R33 Digital Port

CS4335 10K 10K

150 150 10K R27 AOUTL AOUTR R32

8 5 1 562 562

R28 R31 2 R4

J9 OUT1 OUT2 INP1 3 1 2 3 4 5 6 7 8 J1

VDD C31 C30 TP2 1 2 3 4 5 6 7 8 TP3

POWERIN 0

1 D5

1 0.018UF 0.018UF X2 F5 X1 R3 R46 R45

FIDUCIAL FIDUCIAL MTH189 MTH189 0 C32 1UF C41 1UF

JP6

+ 267K + 267K

JP7 FL1B

1 R2

1 1 2

1 2 0 C98 C99 3.3UF 3.3UF

21 21 2

R49 R48 2 2 2 FL0B F3F2 F4 R1 10K 10K R20 8.06K 20K R37 20K R39 R36 FIDUCIAL FIDUCIAL 1 8.06K 1 562 562 X8 X5 X6 POWERIN R44 R47 X7 R152 R153 MTHOLE6 MTHOLE6 MTHOLE6

MTHOLE6 C40 C39 10K

VR6 10K 6 5

0.018UF 0.018UF - + VR6 3 9 10 - + 3 C29 4 6 8 10 12 14 16 18 20 R12 220PF 100K 7 TL084 U22 2 1 8 U22 R7 C37 C52 1UF 100K 1UF TL084 2 1 C33 220PF

J3 1 TP11 12 3 5 7 9 R43 R41 11 13 15 17 19 10K 10K VR6

VR6

9 10 1 6 5 - - + + TP10 C34 C38 D11 D12 D13 D14 D15 D8 D9 D10 LINETX 0.047U 7 TL084 TL084 U23 U23 8

R50 R42 1 D[0:23] 10K 10K 3900PF(OPT) TP9 RADIOTX FB13 FB14 FB15 FB16 FB17 FB18 TP4 20K R26 TP12 SIDETONE 1 4 R160 15 10K U23 TL084 R51

9 10 - + 2 3

10K U2 U2 332 R40 A[0:13] VR2.5 3 5 1 2 VR6

100K R149 3 13 12 A4 A5

- + A0 A1 A2 A3

10K C56 10K 220PF VDD 2N3904 Q2 2N3904 Q3

3 3

2 2

R56 4 6 8 10 12 14 16 18 20 R53 2 2 1 TL084 U23 +10V +10V 14 C107 A A 0.1UF 1 1 ICBUTTS 750561 RADIORX LINERX J4 R54 R55 10K TP13 10K 1 3 5 7 9 11 13 15 17 19

R52

20K 681 C44 0.1UF

+10V 2 R66 SENSE IOMS WR RADLINE R-CS1 RD HNDLINE FB21 1

HPTT SW1 1 2 3 4 1 2 3 4

CTCSS

S2 S1 MIC 23 PTT

EAR J6 GND 770660

NC2 NC1 14 REFERENCE PCB : 750561 This drawing, written description or specification is a proprietary product of Telex, Lincoln, NE and shall not be released, disclosed, nor duplicated without the written permission of TELEX. NOTES: REFERENCE PCB NUMBER : 1 2 3 4 A B C D VDD SHEET SHEET REVISIONS 770660 0.1UF REVISION 27 26 27 REV. LOC. REV. DESCRIPTION ECO NO. DRFT CHKR APP DATE C76 STATUS 26 This drawing, written description or specification D17 R-CS0 is a proprietary product of Telex, Lincoln, NE U17 J5 ARELEASED FOR PILOT BUILD SBC 01/15/01 GROUND PTTNO PTTCOM RAD-RX RAD-TX POWER 19 1 and shall not be released, disclosed, nor duplicated OE2 OE1 1 2 3 4 5 6 1 2 3 4 5 6 D8 18 2 SENSE J2 O0 Y0 D7 1 14 2 15 3 16 4 17 5 18 6 19 7 20 8 21 9 22 10 23 11 24 12 25 13 RTDB25 2 3 4 5 6 7 8 D9 17 3 ICBUTTS 1 9 without the written permission of TELEX. O1 Y1 14 15 16 17 18 19 20 21 22 10 23 11 24 12 25 13 D10 16 4 O2 Y2 D11 15 5 O3 Y3 D6 REFER TO SHEET 1 FOR ECO HISTORY. D12 14 6 HPTT O4 Y4 D13 13 7 O5 Y5 D14 12 8 NOTES: D[0:23] O6 Y6 D15 11 9 D18 FB19 O7 Y7 DIG2

+5V +12V 1K 3 R151 R91 R90 R95 R96 R89 R93 R92 10K 10K 2N3904 R87 10K 10K 10K 10K 10K 10K 1 J17 R85 FB25 TX Impedance 1 2 DIG1 VDD Q15 1 600 Ohm: J18=A J17=A 10K 1K 3 1200 Ohm:J18=B J17=A 2 0.1UF DIG5 J11 A 2 1800 Ohm: J18=A J17=B 2N3904 R84 R105 L5 FB10 1 1 2400 Ohm: J18=B J17=B 3 2 1 C62 B 0.001UF 3 0.01UF B A Q14 A 0.1UF 820UH 10K 2 C80 R107 0 120PF J16 C84 C81 C82

2 U10 C83 B 3 R97 220PF R83 FB23 LINETX 301 12 DIG2 20 1 VCC OE R100 R82 FB26 1K 3 100K 12 DIG3 19 2 D8 +12V Y0 D0 2N3904 R88 100K C79 1K 3 1 600:600 18 3 D9 R117 Y1 D1 2 U8 2N3904 R81 Q13 10K - R101 220PF 4 3 1 1 17 4 D10 3 1K 2 Y2 D2 +12V 3 R104 5 2 Q12 + 10K R118 2N3904 NE5532 33K 16 5 D11 1 61 L6 FB9 2 Y3 D3 R116 T4 VDD R154 33K 0.01UF 0.001UF D[0:23] Q23 15 6 D12 10K U2 0 VR6 0.1UF 820UH 120PF Y4 D4 3 1K 6 U8 0.1UF 2 13 1 2 - C78 C77 C74 C75 R78 FB24 DIG4 2 7 1 2 14 7 D13 R115 2N3904 Y5 D5 1 3114 5 R80 FB27 C85 + 1 2 DIG5 1K 3 NE5532 13 8 D14 Q22 R68 12 1 2 Y6 D6 10K 1K 3 2N3904 R77 +12V 100K 1 1 U11 2 TP7 12 9 D15 R155 VR6 2N3904 R79 Y7 D7 11 1 Q10 R114 33K 10K 1 20 11 10 OE VCC Q11 2 CLK GND 10K 3 1K +10V D8 2 19 +12V R156 2 D0 Y0 21 RX Impedance-Line 1 R119 2N3904 1 74LCX574 1 600 Ohm: J19=A TP8 D9 3 18 R113 10K C17 L7 FB12 D1 Y1 1 2 10K Ohm: J19=B 10K Q21 J21 0.01UF 0.001UF 0.1UF D10 4 17 3 1K 220PF 820UH 120PF +12V HNDLINE D2 Y2 2 1 C90 C91 W-CS0 C93 C92 R112 2N3904 J20,J21=A 2W E3 D11 5 16 1 A R74 RADLINE D3 Y3 2 J20,J21=B 4W +12V Q20 10K D12 6 15 10K J19 B 1K 3 D4 Y4 3 +12V 2 U5 6 A B R109 LINERX - 2N3904 R75 D13 7 14 7 1 2 1 2 3 1 D[0:23] D5 Y5 R150 R148 R73 5 1 2 F6 D1 VDD 3 1K + 1 2 Q9 D14 8 13 NE5532 E4 10K D6 Y6 10K 10K:10K 1K 3 R108 2N3904 +12V 2 0.1UF 1 D15 9 12 4 3 2N3904 R72 D7 Y7 1 Q18 R111 604 C61 10K 5 2 R134 J20 D4 10 11 L8 FB11 1 2 Q8 GND CLK 2 10K F9 Line 10K 3 1K 6 1 1 E1 0.01UF +12V T2 0.001UF 0.1UF 120PF

2 U9 C95 820UH F8 R110 2N3904 0.1UF A J10 C86 C87 C88 74LCX574 1 C89 2 R71 R147 1 D8 20 1 1 1 2 VCC OE Q19 B 2 +12V 10K 21 3 2 1K 3 3 19 2 D16 2 E2 3 RX+ 2 Y0 D0 W-CS1 4 2 2N3904 R76 R102 4 TX+ 1 5 18 3 D17 F7 5 TX- Y1 D1 6 Q7 10K 31K 6 RX- 7 3 17 4 D18 VR2.5 7 2 Y2 D2 R103 2N3904 8 1 FB29 8 2N3904 R69 1 2 1 16 5 D19 18 17 16 15 14 13 12 Y3 D3 Q17 F1 G1 A1 B1 GND2 GND1 F2 A2 B2 10K 11 10 J14, J15, J22, J23 A=Bypass, B=Transformer Q6 D[0:23] FB28 +12V 10K 15 6 D20 2 PIN1OUT 1 2 Y4 D4 2 R61 +12V J14 J15 FB30 14 7 D21 1 2 Y5 D5 C28 a1 a2 1 1 2 1 3 R141 150 13 8 D22 1 Y6 D6 15 R35 A 1UF A 2N3904 R65 2 2 FB31 1 3 1K 12 9 D23 f1 f2 J26 Y7 D7 b1 b2 B B Q4 R140 2N3904 3 3 10K 1 1 11 10 D2 2 2 CLK GND 3 Q31 g1 g2 A FB2 10K C47 2 1 1 1 2 2N3904 R67 2 0.001UF 1 74LCX574 B 120PF PIN1OUT R57 220PF 3 12 e1 c1 e2 c2 RADIOTX C51 C50 Q5 600:600 JP8 10K R58 2 3 +12V 100K 4 3 2 2 JP1 W-CS0 d1 d2 R94 2N3904 100K C46 5 2 1 R131 2 U7 61 Q33 - R59 220PF T3 10K 3 1K 1 3 +12V +12V 2 3 R60 R132 2N3904 E1 D1 C1 DP1 E2 D2 G2 C2 DP2 + 2N3904 R99 1 1 2 3 4 5 6 7 8 9 NE5532 33K 1 R130 FB1 VDD Q30 33K D13 Q16 10K 0.001UF 10K 3 1K VR6 120PF 0.1UF 2 6 U7 J22 J23 C43 2 - C42 R129 2N3904 7 1 1 1 C94 5 K1 + Q29 NE5532 A A 10K 2 2 83+ +12V U12 2 B B 6 VR6 3 3 NC R128 1 20 OE VCC PTT-NC 1 3 1K 5 D16 2 19 +12V D0 Y0 PTT-NO 10 R133 2N3904 1 J24, J25 A=Bypass, B=Transformer 1 TP5 D17 3 18 R127 D1 Y1 FB4 PTT-COM 10K Q28 1 D18 4 17 3 1K C12 0.001UF TP6 D2 Y2 2 1 2 J24 J25 120PF 1 3 R126 2N3904 C53 C59 C58 D19 5 16 1 220PF 1 1 R157 2N3904 D3 Y3 JP2 1 +12V Q27 A A TX-RAD+ +12V D20 6 15 10K 2 2 J13 D14 Q34 D4 Y4 2 100K R159 1UF 2 10K 2 A B

R123 1 3 10K B B TX-RAD- 2 D21 7 14 3 3 1 2 3 D[0:23] D5 Y5 R98 1/2W 3 1K D22 8 13 10K R5 K2 D6 Y6 R122 2N3904 +12V 10K:10K 1 U5 2 10 8 +3 D23 9 12 - D7 Y7 RADIORX 1 1 2 4 3 RX-RAD+ Q25 R125 R137 R136 604 6 10K 3 1 2 R64 3 NC 10 11 + 5 2 3 GND CLK 2 NE5532 FB3 3 1K 10K RX-RAD- MON-NC 1 6 1 T1 0.001UF 5 R124 2N3904 120PF 74LCX574 1 C54 MON-NO 10 J27 C55 Q26 +12V 10K 10K 1 1 2 3 MON-COM 2 A B

W-CS1 C60 A R120 0.1UF 2 1 R106 B

D15 31K 3 J12 JP3 +12V 21 R121 2N3904 1 2 K3 Q24 10K RX Impedance 83+ 2 8 Ohm: J12=A, J13=B VR2.5 Radio 600 Ohm: J12=B,J13=A 6 +12V NC 10K Ohm: J12,J13=B F1-NC 1 R143 5 F1-NO 10 3 1K R142 2N3904 F1-COM 1 Q32 1 10K D16 +12V VDD 2 JP4 K4 2 8 +3 0.1UF Serial Interface 6 +5V NC C69 F2-NC 1 D[0:23] +5V 0.1UF 5 F2-NO 10 C72 J7 F2-COM D12 D11 D10 D9 D8 10 1 VDD 1 44 43 42 41 40

1 C70 0.1UF 6 5 4 3 2 1 FB8

C68 2 0.1UF 2 JP5 0.1UF FB6 D4 D3 D2 D1 D0 RI 3 D13 7 39 RESET 3 2 D5 NC1 VCC DCD DSR CTS MR C66 15 16 D14 8 38 D6 OUT1 2 6 4

D15 9 37 V+ VCC V- 4 VDD D7 DTR 1 GND 4 C67 10 TL16C550C 36 C71 C1+ C2+ RCLK RTS 0.1UF 3 5 5 11 PLCC44 35 U16 C1- C2- 0.1UF 5 SIN OUT2 12 34 DR CHKAPP TITLE NC2 NC4 1 19 6 13 U1 33 OE1 OE2 U20 6 SOUT INTRPT A[0:13] 2 18 TXD 11 14 14 32 Y0 O0 T1IN T1OUT FB7 CS0 RXRDY 3 17 RTS 10 7 7 DEE SBC 15 31 A0 Y1 O1 T2IN T2OUT 7 CS1 A0 4 16 CS3 16 30 A1 Y2 O2 FB5 CS2 A1 5 15 8 17 29 A2 Y3 O3 RXD 12 13 8 DATE BAUDOUT A2 FL0 6 14 FL0B R1OUT R1IN VEGA Y4 O4 CTS 9 8 FL1 7 13 FL1B R2OUT R2IN 9 Y5 O5 9 8 12 01/15/2001 Y6 O6 11 4 9 11 4 Y7 O7 LT1181A WR1 NC3 RD1 RD2 DDIS TXRDY ADS XIN XOUT WR2 VSS RTDB9 C73 220PF 18 19 20 21 22 23 25 26 27 28 24 74LCX541 DSP 223 C65 220PF C64 220PF SCHEMATIC C63 220PF R MCLK2 INTR DWG. NO. SIZE 879457 TELEX COMMUNICATIONS, INC. 770660 WR RD LINCOLN, NEBRASKA NEXT MODEL REFERENCE PCB : 750561 CAD GENERATED DRAWING ASS'Y D 2 2 SHT. OF

A B C D Tone Remote 25

9.4 PCB P/N 750561 Revision H

This drawing, written description or specification Is PART NO: a proprietary product of TELEX, Lincoln, NE, and Telex Communications INC. shall not be released, disclosed, nor duplicated without the written permission of TELEX. Lincoln, Nebraska USA 879457 APPROVALS: DR BY: SBC CHK: APPD: PROD: REV LEVEL: Q DATE:01/17/2001 TITLE: PCB ASSY, DSP223 MAIN BOARD - BE

LN,BE PAGE 1 OF 5 APPROVALS: This drawin without thewrittenpermissionofTELEX. shall notbereleased,disclosed,norduplicated a proprietaryproductofTELEX,Lincoln,NE,and TITLE: 64IDCO 2U 250L5,L6,L7,L8 K1,K2,K3,K4 723510 730142 J11,J12,J13,J14,J15,J16,J19,J20,J21, Q1,Q2,Q3,Q4,Q5,Q6,Q7,Q8,Q9,Q10,Q11,Q12, 54671200T 640124 J7 J9,J10 J3,J4 SPDTSMT 820UH 640149 J6 2N3904SOT-23 2862013 TRANSISTOR 640126 34 INDUCTOR 4 8PINMODULAR JACK J2 J5 3PINSMT 37 RELAY 4 9PINDB9FEMALE 640123 36 RJ-4PINCONN LEADED J1 2862056 35 640136 HEADER 16 CONN FB1,FB2,FB3,FB4,FB5,FB6,FB7,FB8,FB9, 2 6PINRTANGLEADED 59697000 F1 34 CONN 1 20PINSMT 25PINDB25FEMALE 33 E1,E2,E3,E4 CONN 1 DCPWRJACK2.5MM 723511T D10,D11,D12 7101051 16016481SMT 32 HEADER F6,F7,F8,F9 1 31 HEADER 2 D3 710106 30 CONN 1 D8 710109T D4 29 CONN 1 58680000 FERRITEBEAD 28 1.5ASMTFUSE 1610631 27 D9 1610630 D5,D6,D7,D13,D14,D15,D16,D17,D18,D19,D20 TECCORF1250T 508046000T FERRITE SMD4004 24 58711000T POLYSWITCH 4 D2 MMBZ5V6ALT1SOT-23 YELLOWRTANGLE TVB230-050 FORD2 26 D1 FUSE 1 25 THYRISTOR 4 REDRTANGLE 24 MMBD914SOT-23 DIODE 3 760309 1610628 REDLED 640137 23 DIODE 1 DUAL7SEGMENTGRN 22 LED 1 21 DIODE GREENRTANGLE 11 20 LED 18PINRTANGLE 1 102877065T C96,C97,C98,C99 19 LED 1 18 102877021T LED 1 17 SOCKET 1 10UFTANT.BSIZE 16 LED 1 3.3UFTANT.BSIZE 15 CAPACITOR 5 14 CAPACITOR 4 13 12 11 01 AAIO 2P 85102881103T 220PF0805 CAPACITOR 13 10 ITEM AAIO 2P 8512810 C43,C50,C54,C58,C75,C83,C88,C92 102881100T C42,C51,C55,C59,C74,C84,C89,C93 C34 102881138T C30,C31,C39,C40 102881185T 102881126T C22,C27 C21,C24,C77,C82,C87,C91 102881445T C19,C20,C26,C36, C28,C32,C37,C41,C52,C53 120PF0805 102881150T 102881875T 0.001UF0805 CAPACITOR 8 0.047UF0805 CAPACITOR 8 0.018UF0805 9 CAPACITOR 1800PF0805 1 8 CAPACITOR 4 CAPACITOR 0.47UF1210 7 0.01UF0805 6 CAPACITOR 2 5 CAPACITOR 1UF0805 6 4 CAPACITOR 10 3 2 9CPCTR01F00 0818TC1,C2,C3,C4,C5,C6,C7,C8,C9,C10,C11, 102881186T 0.1UF0805 CAPACITOR 49 1 LN,BE NEW g , writtendescriptionorspecificationIs QTY DATE:01/17/2001 DR BY:SBC YEDSRPINPR O DESIGNATOR PARTNO. DESCRIPTION TYPE CHKD BY: PCB ASSY,DSP223MAINBOARD-BE Telex CommunicationsINC. APPD BY: Lincoln, NebraskaUSA C112,C113,C114,C115,C116,C117 C85,C86,C90,C94,C95,C107,C108,C109, C67,C68,C69,C70,C71,C72,C76,C78,C81, C35,C44,C60,C61,C62,C66, C13,C14,C15,C16,C18,C23,C25, Q22,Q23,Q24,Q25,Q26,Q27,Q28,Q29,Q30, Q13,Q14,Q15,Q16,Q17,Q18,Q19,Q20,Q21, J22,J23,J24,J25,J26,J27,J17 FB25,FB26,FB27,FB28,FB29,FB30,FB31 FB10,FB11,FB12,FB19, FB21,FB22,FB23,FB24, C103,C10 C33,C56 C46,C47,C63,C64,C65,C73,C79,C80,C12,C17,C29 PROD: 4 ,C106,C110,C111 PART NO: REV LEVEL: 879457 Page 2of 5 , C45,C48 Q , APPROVALS: This drawin without thewrittenpermissionofTELEX. shall notbereleased,disclosed,norduplicated a proprietaryproductofTELEX,Lincoln,NE,and TITLE:

21I T11CW706 U20 U13 760261 U19 U16,U17 511336000T 760250T U18 U7,U8,U5 U9,U10,U11,U12 760256 LT1181ACSW 760319 760268 U3,U4 760257 AT24C16NSO8 U2 ADSP-2186MTQFP100 74LCX541SO20 U1 760263 53266123 LM317M 74LCX574SO20 IC 1 NE5532SO8 760262 IC TP2,TP3,TP5,TP6,TP7,TP8,TP12,TP13 1 72 IC 1 71 IC 2 2861965 CS4335SO8 70 IC 1 U6SOCKET 4053SO16 69 IC 4 TL16C550CFN 539030032T 68 IC 3 67 T3,T4 32PINPLCCSOCKET 66 SW1 SOCKETPLCC 1 T1,T2 R107 65 IC 2 3180259 102515146T 64 IC 57502000 ORANGE 1 R19,R71,R73,R74,R78,R80,R82,R83,R85,R86, 3180246 63 IC 1 62 600-600THRU-HOLE TESTJACK PUSH BUTTONSPST 102515200 8 61 10K-10KTHRU-HOLE TRANSFMER 2 60 TRANSFMER 301OHMS0805 2 R57,R58,R97,R100 R66 59 SWITCH 1 102515400T R64,R134 102515180T 58 RESISTOR R59,R60,R101,R104,R155 1 102515175T 57 102515350T R40 56 R29,R30,R45,R46,R63 102515150T 55 R35 1K0805 102515441T 681OHMS0805 102515017T 604OHMS0805 R26,R36,R39,R52 RESISTOR 28 R28,R31,R44,R47 RESISTOR 100K0805 102515329T 1 R27,R32,R61 102515172T 54 RESISTOR 332OHMS0805 R24 2 102515117T 53 RESISTOR 33K0805 102515346T 4 R25,R38,R62,R70,R144,R145,R146 52 RESISTOR 15OHMS0805 1 102515065T 51 RESISTOR 267K0805 5 50 RESISTOR 562OHMS0805 1 R5 R7,R12,R68,R98,R149 49 RESISTOR 150OHMS0805 5 102405100T 48 RESISTOR 20K0805 4 47 RESISTOR 47OHMS0805 3 724097 46 RESISTOR 30K0805 4 100KLINEARH.ADJUST 45 RESISTOR 7 44 RESISTOR 10OHMS2010 1 43 RESVAR 5 R4,R6,R8,R9,R10,R11,R13,R14,R15,R16,R17,R18 42 RESISTOR 1 102515300T 41 40 R1,R2,R3,R105,R139,FB13,FB14,FB15,FB16,FB17 102506000T 10K0805 RESISTOR 0OHM0805 79 39 RESISTOR 12 38 ITEM LN,BE NEW g , writtendescriptionorspecificationIs QTY DATE:01/17/2001 DR BY:SBC YEDSRPINPR O DESIGNATOR PARTNO. DESCRIPTION TYPE CHKD BY: PCB ASSY,DSP223MAINBOARD-BE Telex CommunicationsINC. APPD BY: Lincoln, NebraskaUSA R141,R143, R138,R162 R120,R123,R125,R127,R128,R130,R131, R102,R109,R111,R113,R114,R116,R117, R152,R153,R156,R157,R159,R160 R106,R136,R137,R147,R148,R150,R95,R96,R151 R129,R132,R133,R135,R140,R142, R115,R118,R119,R121,R122,R124,R126 R91,R92,R93,R94,R99,R103,R108,R110,R112, R76,R77,R79,R81,R84,R87,R88,R89,R90 R51,R53,R54,R55,R56,R65,R67,R69,R72,R75, R21,R22,R23,R33,R34,R41,R42,R43,R48,R49,R50 ,FB18,R154 Q31,Q32,Q33,Q34 PROD: PART NO: REV LEVEL: 879457 Page 3of 5 Q APPROVALS: This drawin without thewrittenpermissionofTELEX. shall notbereleased,disclosed,norduplicated a proprietaryproductofTELEX,Lincoln,NE,and TITLE: 71RS69K00 0558TR161 102515281T R20,R37 102515287 FB20 770660 6.98K0805 BE738 C49 724039 8.06K0805 51821526 1000UFELECTHSIZE SOLDERPASTE SCHEMATIC RES COMMONMODE 1 REFERENCE 0 87 RES 2 86 FERRITE 1 85 CAP 1 84 83 A/R 82 913.6MZ708 Y1 780186 U26 FORJ11,J12,J13,J14,J15,J16,J19,J20,J21, 2515001001 760306 U22,U23 U25 U27(PROGRAMMED) PRINTEDCIRCUITBOAR 760267-3PS 32.768MHZ 4300047 U21 760264 EPM7032AEPLCC44 JUMPER PCB 1 760260T TPS70158 U27SOCKET CS5330ASO8WB 81 JUMPER 16 TL084SO14 539030044 1 UA7805CKTESMT 80 IC 1 44PINPLCCSOCKET 79 SOCKETPLCC 1 78 IC 1 77 IC 1 76 IC 2 75 IC 1 74 73 ITEM LN,BE NEW g , writtendescriptionorspecificationIs QTY DATE:01/17/2001 DR BY:SBC YEDSRPINPR O DESIGNATOR PARTNO. DESCRIPTION TYPE CHKD BY: PCB ASSY,DSP223MAINBOARD-BE Telex CommunicationsINC. APPD BY: Lincoln, NebraskaUSA D 750561 J22,J23,J24,J25,J26,J27,J17 PROD: PART NO: REV LEVEL: 879457 Page 4of 5 Q

1 2 3 4 2 02/12/02 OF 770660 1 SBC

DSP 223 0.1UF

VEGA

D[0:23] 0.1UF

SCHEMATIC DWG. NO.

REVISIONS A[0:13] D[0:23]

0.1UF 10K

2 VDDINT2

D1/IAD14 D0/IAD13 D2/IAD15

VDDEXT3

D16 EINT

D16 76

NEXT ASS'Y ELIN D17

49 879457 D17 77

R18 10K ELOUT D18

D18 78

D19 79

2 4 6 8 10 12 14 EE GND9

46 1 80

EMS

D20 BR BG

45 D20

81 ELIN EMS

TP1 EINT

D21

RESET ECLK

D21 82

D F C 11-93-01 SBC 11/27/01 E A RELEASED FOR PILOT BUILDB SBC 01/15/01 D22 ERESET

43 ERESET D22 83

D23 SCLK1

REV. 42 D23 84

GND5 FL2

FL1 DR1

FL1 86

MODEL FL0 RFS1

EED0 39 FL0 87

J8 PF3 TFS1

C8 DT1 PF2-MODEC

0.1UF 37 LOC. 89

VDDEXT4 VDDEXT2

U18 36 90

PWD SCLK0

GND10 DR0

VDD 34 TQFP100 92

RFS0 PF1-MODEB

ADSP-2189M 33 93

GND EBG EBR KEY ELOUT EE RESET PF0-MODEA TFS0

32 1 3 5 7 9 94

11 13 Emulation Header BGH DT0

VDD

IRQ2+PF7 PWDACK

96 C6

IRQL1+PF6

A0 0.1UF

29 C48 A0 97

SHEET A1/AD0 GND4

28 1 2

STATUS A1 98

A2/AD1 IRQL0+PF5

REVISION 27 A2 99

A3/AD2 IRQE+PF4

26 0.1UF A3 100

C45

10K TL084 U22

TL084 U22 A[0:13] R6 EED0 + - 3 2 + -

12 13 A5 A6 A7 A8 A9 A10 A11 A12 A13 A4 EECLK 10K

7 6 5

30K 10K

R15 CLK

TEST VCC1 DATA

10K R24 VDD 4 3 R23

+5V

OUT 0.1UF VDD EECLK R11

+2.5V U19 SO8NB

10K AT24C16

C11

Mode Select R's 1UF 10K 10K

NC1 NC2 NC3 10K GND Y1

18 2 3 4 R10 0.1UF 37-5MHZ C20

NC GND

R14 1 2 R8 R22 10K R21 10K R13 10K

C C

+10V

C4 CAD GENERATED DRAWING 1UF

VDD VDD

10K

0.1UF

VDD C19

1K C1

D9 R17

R138 1 3 0.1UF VDD

2 10K

RESET 10UF 10UF

+2.5V C7 R135 VDD

1 + 2

2 1 C110 +10V

C111

0.1UF C117

INTR 0.1UF

U24 C116

0.1UF

1UF

U23 C115

20 19 18 17 16 15 14 13 12 11 + 21

C14

29 39 38 37 36 34 33 32 31 30 PG1 0.1UF

NC2 +10V FS

RD WR U22

RESET 1K DIV4 INTR INTR

IOMS C114

VOUT2-1 VOUT2-2 VOUT1-1 VOUT1-2 GND30 VSENSE2 SP0-TX VSENSE1

SP0-RX 0.1UF

VCCIO35 U8

C113 R162

RESET

40 B0 28

RESET 0.1UF U7

41 B1

RESET 27 ADC1

42 C112 2 0

GND42 26 R139

43 DAC1

32MCLK 25 BYPASS CAPS FOR: DAC2 6.98K 47

OUT 44 U26 U2

GND44 24 VDD

1 VCCINT23 47 ADJ

GND1 23 R70 GND22

1 2 22

R161 GND2

3 CS3 R144

VCCINT3 21 U13

4 GND20 U27

A3 20 0.1UF

5 W-CS1 NC1VIN1-1 VIN1-2 MR1 MR2 EN NC3 VIN2-2 IN MAINPLD C2 LM317 SEQ GND VIN2-1 VDD

A4 19 1 2 3 4 5 6 7 8 9 3

6 W-CS0 10 A5 18 C9 TPS70158 0.1UF

+12V C15 A3

0.1UF A4

W-CS0 W-CS1 CS3 A5 R-CS0 R-CS1 MCLK2 GND10 MCLK GND12 GND13 VCCIO15 DIV4 LRCLK-OFF LRCLK R63 C103 7 8 9 A[0:13] 10 12 13 14 16 1115 17 35 C109 1 + 2 +5V

0.1UF 10UF MCLK 267K DAC1 LRCLK SCLK

C108 R38 47 ADC1

0.1UF R146 47 R-CS0 MCLK2

R-CS1 R145 C13 C49 47

1 2 1 2 3 4 1 2 3 4 +5V 0.1UF + 2

SCLK LRCK U3 MCLK

LRCK U25 SDATA 1000UF MCLK 0.1UF SDATA C106 3 + 10UF C25 C26 C23

1UF

0.1UF 0.1UF

DEM/SCLK 1

OUT

FB20

AGND

C10 7 GND AGND

+5V VA 6 7 Leave R1 for 3.3V Parts (L) Remove for 2.5 V Internal Parts (M) 6 2 +5V VA VDD

U21

D11 47 2 21 3 47 IN 1 R62 R25 CS4335 UA7805CKTE

C16 D10 3A CS5330A

21 2 1 1

4 AINL AINR F1 AOUTL AOUTR 0.1UF 8 5 D12 8 5 2 1 1 + 2

+12V C104

10UF 1 2 3 4 C24 C21 U4 LRCK

MCLK R30 R29 B B SDATA C36 1UF 0.01UF 0.01UF C35 0.1UF DEM/SCLK

0.47UF + 267K + 267K C27

7 AGND +5V 6 VA C96 3.3UF C97 C22 0.47UF 3.3UF 21 R34 21 R33 Digital Port

CS4335 10K 10K

150 150 10K R27 AOUTL AOUTR R32

8 5 1 562 562

R28 R31 2 R4

J9 OUT1 OUT2 INP1 3 1 2 3 4 5 6 7 8 J1

VDD C31 C30 TP2 1 2 3 4 5 6 7 8 TP3

POWERIN 0

1 D5

1 0.018UF 0.018UF X2 F5 X1 R3 R46 R45

FIDUCIAL FIDUCIAL MTH189 MTH189 0 C32 1UF C41 1UF

JP6

+ 267K + 267K

JP7 FL1B

1 R2

1 1 2

1 2 0 C98 C99 3.3UF 3.3UF

21 21 2

R49 R48 2 2 2 FL0B F3F2 F4 R1 10K 10K R20 8.06K 20K R37 20K R39 R36 FIDUCIAL FIDUCIAL 1 8.06K 1 562 562 X8 X5 X6 POWERIN R44 R47 X7 R152 R153 MTHOLE6 MTHOLE6 MTHOLE6

MTHOLE6 C40 C39 10K

VR6 10K 6 5

0.018UF 0.018UF - + VR6 3 9 10 - + 3 C29 4 6 8 10 12 14 16 18 20 R12 220PF 100K 7 TL084 U22 2 1 8 U22 R7 C37 C52 1UF 100K 1UF TL084 2 1 C33 220PF

J3 1 TP11 12 3 5 7 9 R43 R41 11 13 15 17 19 10K 10K VR6

VR6

9 10 1 6 5 - - + + TP10 C34 C38 D11 D12 D13 D14 D15 D8 D9 D10 LINETX 0.047U 7 TL084 TL084 U23 U23 8

R50 R42 1 D[0:23] 10K 10K 3900PF(OPT) TP9 RADIOTX FB13 FB14 FB15 FB16 FB17 FB18 TP4 20K R26 TP12 SIDETONE 1 4 R160 15 10K U23 TL084 R51

9 10 - + 2 3

10K U2 U2 332 R40 A[0:13] VR2.5 3 5 1 2 VR6

100K R149 3 13 12 A4 A5

- + A0 A1 A2 A3

10K C56 10K 220PF VDD 2N3904 Q2 2N3904 Q3

3 3

2 2

R56 4 6 8 10 12 14 16 18 20 R53 2 2 1 TL084 U23 +10V +10V 14 C107 A A 0.1UF 1 1 ICBUTTS 750561 RADIORX LINERX J4 R54 R55 10K TP13 10K 1 3 5 7 9 11 13 15 17 19

R52

20K 681 C44 0.1UF

+10V 2 R66 SENSE IOMS WR RADLINE R-CS1 RD HNDLINE FB21 1

HPTT SW1 1 2 3 4 1 2 3 4

CTCSS

S2 S1 MIC 23 PTT

EAR J6 GND 770660

W-CS1 C60 A R120 0.1UF 2 1 R106 B

1 C70 0.1UF 6 5 4 3 2 1 FB8

C68 2 0.1UF 2 JP5 0.1UF FB6 D4 D3 D2 D1 D0 RI 3 D13 7 39 RESET 3 2 D5 NC1 VCC DCD DSR CTS MR C66 15 16 D14 8 38 D6 OUT1 2 6 4

A B C D 26 Vega DSP-223

10 Warranty, Service, Repair, and Comments

Important! Be sure the exact return address and a description of the problem or work to be done are enclosed with your equipment.

Warranty (Limited) All Telex Communications, Inc. manufactured Vega Signaling products are guaranteed against malfunction due to defects in materials and workmanship for three years, beginning at the date of original purchase. If such a malfunction occurs, the product will be repaired or replaced (at our option) without charge during the three-year period, if delivered to the Telex factory. Warranty does not extend to damage due to improper repairs, finish or appearance items, or malfunction due to abuse or operation under other than the specified conditions, nor does it extend to incidental or consequential damages. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation may not apply to you. This warranty gives the customer specific legal rights, and there may be other rights which vary from state to state.

Factory Service Center

TELEX Communications, Inc. Vega Signaling Products 8601 East Cornhusker Highway, Lincoln, Nebraska, 68507 Phone: (402) 465-7026 / (800) 752-7560 Fax: (402) 467-3279 E-mail: [email protected] Web: www.vega-signaling.com

Claims No liability will be accepted for damages directly or indirectly arising from the use of our materials or from any other causes. Our liability shall be expressly limited to replacement or repair of defective materials. Suggestions or Comments We’d appreciate your input. Please send us your suggestions or comments concerning this manual, by fax (402-467-3279) or e-mail them to: [email protected] Visit our web site at www.vega-signaling.com Tone Remote 27

11 DSP-223 Specifications MON timer: 10ms to 65seconds, adjustable Operating Temperature Range: 0 to 70°C for full

specifications PTT Detect Frequencies: Programmable 2100, Power Requirements: +12 to +16 Vdc, semi- 2155, 2175, 2300, 2325, 2600, 2800 and regulated, 500ma. 2970Hz

Relay Contact Ratings: 1A at 125Vac PTT Tone Detect Bandwidth: ± 20 Hz

Radio Interface: ±45 Vdc withstand rating Tone-Detect Stability: 100 ppm Line to TX Output Gain: -10dB to +25dB, user settable Notch Frequency Bandwidth: 50 Hz at -3dB points. ±1Hz at –40dB. Radio Output Level: 10mVp-p to 9Vp-p for microphone level or -40 to +10dBm into 600Ω Notch Frequency Rejection: 45 dB minimum load, adjustable Morse Code Transmitter: 20 wpm, 400-2000Hz Radio Output Impedance: 600Ω for balanced carrier selectable, 50 chars max, -40 to 0 dB or mode, 200Ω for single ended mode range relative to max radio level output. Radio Input Level: 100mVrms to 16Vrms, adjustable Voter Status: Programmable active Hi/Low, 0 to – 20dbm, 300 to 3000Hz Audio Distortion: 2% THD maximum Radio Interface: ± 45 Vdc withstand rating Frequency Response: ±1.5 dB, 300 to 3000 Hz, except at 2175 Hz notch frequency Non-Relay Outputs: Open collector, active low, Line Output Level: -40 to +10dBm, adjustable 200mA maximum, 40V collector to emitter voltage Line Input/Output Impedance: 600Ω nominal, or 10kΩ receive Dimensions: 8 ½” Wide, 7 1/8” Deep, by 1 5/8” High Sensitivity: Ultimate sensitivity, -25dBm PTT tone

Frequency-Select Function Tone Decoder Tuning Range: Not tunable by field personnel, only by software change

Function-Tone Detection Bandwidth: ± 20 Hz around center of frequency

DTMF Detection Bandwidth: ± 25 Hz around center of frequency

Specifications are subject to change without notice