PCN-1815SSQN/1Cx2

HO2-344916-201 PCN-1815SSQN/1Cx2 30KW VHF ANALOGTVTRANSMITTER PCN-1815SSQN/1Cx2 30KW VHFANALOGTVTRANSMITTER PCN-1815SSQN/1Cx2 30KW VHFANALOGTVTRANSMITTER PCN-1815SSQN/1Cx2 30KW VHFANALOGTVTRANSMITTER

30KW VHF ANALOG TV TRANSMITTER

PCN-1815SSQN/1Cｘ2 NTUTO MANUAL INSTRUCTION MANUAL INSTRUCTION NTUTO MANUAL INSTRUCTION MANUAL INSTRUCTION ＩＮＳＴＲＵＣＴＩＯＮＭＡＮＵＡＬ VOL.Ⅰ

VOL.Ⅰ VOL.Ⅰ VOL.Ⅰ VOL.Ⅰ

344916 344916 344916 344916 NEC Corporation TOKYO,JAPAN

TV TRANSMITTER

GWP-G22906

INSTRUCTION MANUAL FOR PCN-1815SSQN/1C×2 30kW VHF TV TRANSMITTER

...... HO2-344916-201

VOL. I PRELIMINARY INFORMATIONS

1. Caution and Safety HO2-344916-201 - First Aid in the operation of this equipment HTD-E-3561 2. General Information HO2-344916-201 3. Functional Description HO2-344916-201 4. Operation and Adjustments HO2-344916-201 5. Maintenance HO2-344916-201 6. Warranty and Repair HO2-344916-201 7. Units and Panels - DM-3100AB Exciter HO2-344644-203 - 6-Way Power Divider HO2-344487-201 - VA3000QE PA/200-W HO2-344987-201 - 6-Way Power Combiner HO2-344488-201 - HPC-1508 TX Control HO2-344485-201 - SNMP Agent for TV TX HO2-343600-201 - WEB Remote Control HO2-343601-204 - Directional Coupler HO1-342678-205 - Indoor Coaxial Feeder HO1-340761-204 - Liquid Cooling System HO2-344491-201 - Pump Rack HO2-344492-201 - Pump HO2-340857-207 - Heat Exchanger HO2-343604-201 - Extension Cable Unit HO2-343059-203

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8. Output Coaxial Equipment - TXASU-H-430R0 Output Coaxial Equipment HO2-344989-201 - HPC-1253 System Control (CA22) HO2-344922-201 - SNMP Agent for TV TX HO2-344140-201 - WEB Remote Control HO2-343437-201

- ii - GWP-T22247W01

HO1-349495-202

TABLE OF ABBREVIATION

ABBREVIA ABBREVIA NAME NAME -TION -TION

A. A Aural, Audio CCIR International Radio Consultitive Committee AC Alternating Current CCW Conuter Clockwise ACB Circuit Breaker CIB (D) Constant Impedance Band AD AD Converter Pass (Diplexer)

ADJ Adjust CIN (D) Constant Impedance

AGC Automatic Gain Control Notch (Diplexer)

ALM Alarm CH Channel

AM Amplitude Modulation CI Contineous Signal Input

AMP Amplifier CLK Clock

ANS Answer CN. CNO Connector

ANT Antenna CO Contineous Signal Output

APC Automatic Phase Control COAX Coaxial

APL Average Picture Level COM Common

ATT Attenuator COMB Combiner

AUTO Automatic COMP Comparator

AVE Average CONT Control

CORR Corrector

B. B, BL, BLW, Blower CPU Central Processing Unit BLOW CR Triak BA Buffer Amplifier CR Thyrister BAL Balance CS Coaxial Switch BEF Band Elimination Filter CT Current Transformer BPF Band Pass Filter

C. C Capacitor

CAL Calibration

(i) GWP-T22247W01

ABBREVIA ABBREVIA NAME NAME -TION -TION

D. D Diode FB, F/B Feed Back

D, DIG Digital FC Flat Cable

DA DA Converter FIFO First Input First Output

DC Direct Current FIL Filament

DC Directional Coupler FIL Filter

DEMO Demodulator FIR Finite impulse Response

DET Detector FM Frequency Modulation

DEV Deviation FPA Final Power Amplifier

DG Differential Gain FREQ Frequency

DIA Diameter

DIV Divider G. G, GND Ground

DL Delay Line GDC Graphic Display Controller

DL, D/L Dummy Load

DPA Drive Power Amplifier H. HF Harmonic Filter

DS, D/S Dual Sound HT High Tension

DS Diode Stack

DSB Double Side Band I. IC Integrated Circuit

DSP Digital Signal Processor ICPM Incidental Carrier Phase Modulator DP Differential Phase ID, I/D Identity DVC Digital Video Compensator IF Intermediate Frequency

I/F Interface E. EL (D) Electro Lunminescent (Display) IM Intermodulation

ENV Envelope INT Internal

EQ Equalizer I/O Input/Output

EX Exciter IRT Institut Fur Rundfunk Technix EXT External

J. J Connector, Jack F Fuse F.

F Frequency

(ii) GWP-T22247W01

ABBREVIA ABBREVIA NAME NAME -TION -TION

K. K Relay NVRAM Nonvolatile Randam Access Memory K Klystron

O. OCXO Oven Controlled Crystal L. L Coil Oscillator LED Light Emitting Diode OFS Offset LD Linear Detector OL Over Load LIN Linear OLR Over Load Relay LO, LOC Local O/P Output Power LPF Low Pass Filter OPE Operation LT Low Tension OPF Output Filter LUMI Luminance OSC Oscillator

M. M Meter P. P Connector, Plug MIX Mixer PA Power Amplifier M-NET A Kind of Scramble PAL Phase Alternation by Line System

PARA Parallel MOD Modulator

PCB Printed Circuit Board MON Monitor PC Photo Coupler MONO Monaural PI Pulse Signal Input MS Magnet Switch PCM Pluse Code Modulation MS, M/S Multi Sound PIE Program Input Equipment MPSC Multi-protocol Serial Controller PJ Plug Jack PLL Phase Locked Loop N. NF Notch Filter PO Pulse Signal Output NFB Non-fuse Breaker POW Power

NICAM A Kind of Multi Sound PRE-EM PRE-Emphasis System PROC Processor NOR/INV Normal Invert PS Power Supply

NTSC Nation Television System PWB Printed Wire Board Committee PWR Power

(iii) GWP-T22247W01

ABBREVIA ABBREVIA NAME NAME -TION -TION

Q. Q Transistor S. RFRM Snchronized Waveform Reformed

ST Stereo Phonic R. R Resistor STL Studio to Transmitter Link RAM Randam Access Memory SW Switch Rb Rubidium

SYG Synchronized Waveform R/C Remote Control Gate REF, REFL Reflect SYNC Synchronize REF Reference SYNTHE Synthesizer REGEN Re-Generator

REM Remote T. T Transformer RES Response TB Terminal Board RF Radio Frequency TCXO Temperature Compensated RL Relay Crystal Oscillator

RN Resistor Network Temperature TEMP ROM Read Only Memory Timer, Time Delay Relay TDR RT Thermistor Thermistor TH RX Receiver Test Load T/L A Kind of Scramble

S. S Switch TOCOM Sysrem

SA Synchronized Waveform Transistor TR Added Thermal Lead Switch TRS SAW Surface Acoustic Wave Transistor Transistor Logic TTL SC Subcarrier Transmitter TX SCR Silicon Controlled Rectifer

SECAM Séquentiel Coulours A Ultra High Frequency Mémoire U. UHF Unbalance SEL Select UNBAL, UBL SEP Separator

SG Signal Generator

SIG Signal

(iv) GWP-T22247W01

ABBREVIA ABBREVIA NAME NAME -TION -TION

V. V Visual, Video VC Variable Capacitor

VCXO Voltage Controlled Crystal Oscillator

VDA Video Distribution Amplifier

VFO Variable Frequency Oscillator

VHF Very High Frequency

VR Variable Resistor

VSB Vestigial Single Side Band

VSBF Vestigial Single Side Band Filter

VSWR Voltage Standing Wave Ratio

W. W Wire

W Circulator

X. X’tal Crystal

Y. Y Circulator

Z. Z Divider/Combiner

Z Directional Coupler

Z Surge Absorber

ZNR Surge Absorber

(v) GWP-G22906

INSTRUCTION MANUAL FOR PCN-1815SSQN/1C×2 30kW VHF TV TRANSMITTER

...... HO2-344916-201

CONTENTS

SECTION. 1 CAUTION AND SAFETY 1-1 General ...... 1-1 1-2 Cautions for Use ...... 1-1

SECTION. 2 GENERAL INFORMATION 2-1 Scope ...... 2-1 2-2 General ...... 2-1 2-3 Coding System ...... 2-3 2-4 Principal Characteristics ...... 2-5 2-5 Composition ...... 2-6 2-5-1 Functional Composition ...... 2-6 2-5-2 Physical Composition ...... 2-8

SECTION. 3 FUNCTIONAL DESCRIPTION 3-1 Exciter Section ...... 3-2 3-1-1 DM-3100AB Exciter ...... 3-2 3-1-2 Characteristics ...... 3-3 3-1-3 Exciter switch ...... 3-4 3-2 Power Amplifier Section ...... 3-5 3-2-1 VA3000QE Power Amplifier ...... 3-5 3-3 Cooling Section ...... 3-7 3-4 Output Section ...... 3-7 3-5 Control Section ...... 3-8 3-5-1 General ...... 3-8 3-5-2 Control Method ...... 3-8 3-5-3 TX Control Unit ...... 3-8 3-5-4 Operation Panel ...... 3-14 3-6 Monitoring Section ...... 3-17

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3-7 Interface ...... 3-18 3-7-1 AC Line ...... 3-18 3-7-2 Signal Line ...... 3-19 3-7-3 RF Monitor ...... 3-19 3-7-4 Control Line ...... 3-20 3-7-4-1 Parallel Interface ...... 3-21 3-7-4-2 Serial Communication Interface ...... 3-26 3-7-5 System Control Interface ...... 3-32 3-7-6 Others ...... 3-34

SECTION. 4 OPERATION AND ADJUSTMENTS 4-1 General ...... 4-1 4-2 Operation Panel ...... 4-8 4-3 Control Mode Selection ...... 4-11 4-4 Starting and Stopping ...... 4-12 4-5 Setting ...... 4-14 4-5-1 Setting of Time ...... 4-14 4-5-2 Setting of visual Frequency, rated output power, and transmitter type ...... 4-14 4-6 Adjustments ...... 4-16 4-6-1 Adjustments of TX meter and faults levels ...... 4-16 4-6-2 Adjustments of Exciter ...... 4-19 4-6-3 Adjustments of Power Amplifier ...... 4-19

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SECTION. 5 MAINTENANCE 5-1 General ...... 5-1 5-2 How to Stop Operation ...... 5-2 5-3 Transmitter Operation Log ...... 5-4 5-4 Monthly Maintenance Services ...... 5-4 5-5 Semiannual and Annual Maintenance Services ...... 5-5 5-5-1 Transmitter Station ...... 5-5 5-5-2 Transmitter ...... 5-6 5-5-3 Check of Soldering...... 5-7 5-5-4 Check Items for Exciter ...... 5-8 5-5-5 Check Items for Coaxial System ...... 5-8 5-6 Probable Causes of Troubles ...... 5-9 5-6-1 Inability Starting ...... 5-9 5-6-2 Output Lowering ...... 5-9 5-6-3 C/N Lowering ...... 5-9 5-6-4 Detection of Reflection Power ...... 5-10 5-7 Replaceable Parts and Replacement Periods ...... 5-10 5-8 Troubleshooting ...... 5-11 5-8-1 Fault Indications ...... 5-11 5-9 Replacement procedure of units ...... 5-13 5-9-1 Replacement procedure of power amplifier ...... 5-13

SECTION. 6 WARRANTY AND REPAIR 6-1 Warranty ...... 6-1 6-1-1 Warranty ...... 6-1 6-1-2 Corrective action ...... 6-1 6-1-2-1 Hardware ...... 6-1 6-1-2-2 Software ...... 6-1 6-1-3 Conditions ...... 6-2 6-1-4 No Defects Found ...... 6-3 6-1-5 Exceptions of applications ...... 6-3 6-2 Repair and Supply of Units and Parts ...... 6-5 6-2-1 Definitions ...... 6-5

- iii - GWP-G22906

6-2-2 Duration of repair service ...... 6-5 6-2-2-1 Repair period ...... 6-5 6-2-3 Supply of Parts, Units and Purchased Units for repair ...... 6-5 6-2-3-1 Parts supply ...... 6-5 6-2-3-2 Unit supply ...... 6-6 6-2-3-3 Purchased Unit supply ...... 6-6 6-2-3-4 Development of Replacement Unit ...... 6-6 6-2-3-5 Confirmation of final volume needed ...... 6-6 6-2-4 Supply of Parts, Units and Purchased Units ...... 6-6 6-3 Request to Our Customers for Assistance (For Shorter Lead Times of Repairs) .. 6-7

- iv -

SECTION.1 CAUTION AND SAFETY

GWP-G22906

PCN-1815SSQN/1Cx2 VHF DIGITAL TV TRANSMITTER SECTION. 1 CAUTION AND SAFETY

1-1 General

This transmitter has a capacity capable of supplying energy up to 30kW at the maximum as the high-frequency output. Therefore, mishandling the transmitter may not only damage the equipment associated with the transmitter, but also cause injury or death of persons in access to live parts. The instruction manual must be read thoroughly before operation, and the transmitter must be correctly handled and operated.

1-2 Cautions for Use

Expresses condition of a possible dangerous that has possibility of causing personal death or injury if not avoided.

HIGH VOLTAGE Supplied with 220V AC

(1) Before removing the rear or side door of the transmitter for maintenance work, turn OFF all the ACBs on the front panel of the transmitter.

(2) When removing the ACB panel on the front face of the transmitter, turn the distribution board in the station OFF before the removal.

(3) At the time of maintenance work, select the “LOCAL” control mode. If the “REMOTE” control mode is selected, a danger in which the transmitter is control led by a third party will be incurred.

(1) The cooling piping and combiner at the back of the VA3000QE PA and transmitter are maintained in high temperature. To prevent access to these parts which may cause injury, sufficient care should be taken.

1 - 1 GWP-G22906

(1) The VA3000QE PA is a heavy weight. When lifting or transferring this equipment, two or more persons should work to prevent personal injury and shock to the equipment by its accidental fall.

Expresses condition of a possible danger that has possibility of causing a minor or medium trouble if not avoided, and also expresses dangerous condition supposed to cause material defects only.

(1) Be sure to place the transmitter in vertical position without slanting.

(2) Do not step onto the top of the transmitter.

(3) Do not step onto the piping nor place any article on the piping.

(4) Do not work by wet hand.

(5) If water is splashed on any part of the transmitter, wipe the splashes with a dry cloth.

(6) When tightening or loosening a flange of the piping, be sure to use two wrenches. If not so, the piping may deform or twist.

(7) When pulling a PA out of the rack, be sure to;

(a) disconnect input cable of the PA and put it away not to be damaged during the replacement work, (b) turn off the AC breaker of the PA located behind cover, (c) close the PA valves located behind the PA at rear side of the rack.

(8) When on the air, do not disconnect two or more PAs.

(9) When mounting a PA, be sure to mount the PA to come to the end position. In this case, be sure to check if other PAs on the rack are disconnected by shock during the mounting work.

(10) When mounting/dismounting a unit (exciter, TX control, etc.), take care so that the cables on the rear space are not caught up with the unit.

1 - 2 GWP-G22906

(11) Do not operate the transmitter with the external interlock circuit strapped. In such a case, unexpected accident may be caused.

(12) In case that a PA is stored to the storage or is shipped back to the repair center, be sure to remove coolant completely from the PA by using FOOT PUMP attached as a part of accessories.

(13) Beryllium Oxide Warning

This transmitter has used the resistors containing a beryllium oxide (BeO) substrate. Under normal applications of these products, there is NO risk to the end user. It is important to understand this substrate must not be sanded, scraped or tampered with. Overexposure of beryllium dust or fumes may cause berylliosis, a serious chronic lung disease. Product should be disposed of in accordance with local regulations.

Disposing of your used NEC product

In the European Union

EU-wide legislation as implemented in each Member State requires that used electrical and electronic products carrying the mark (left) must be disposed of separately from normal household waste. This includes transmitter or electrical accessories, such as interface-connectors.

When you dispose of such products, please follow the agreements made by between you and NEC. The mark on the electrical and electronic products only applies to the current European Union Member States.

Outside the European Union

If you wish to dispose of used electrical and electronic products outside the European Union, please contact your local authority and ask for the correct method of disposal.

1 - 3 GWP-G22906

”Equipment complying with IEC 61000-3-12”

“This equipment complies with IEC 61000-3-12 provided that the short-circuit power S sc is greater than or equal to 5819.7kVA at the interface point between the user’s supply and the public system. It is the responsibility of the installer or user the equipment to ensure, by consultation with the distribution network operator if necessary, that the equipment is connected only to a supply with a short-circuit ” power S sc greater than or equal to 5819.7kVA

1 - 4

SECTION.2 GENERAL INFORMATION

GWP-G22906

SECTION. 2 GENERAL INFORMATION

2-1 Scope

This instruction manual contains information on the operation and maintenance of the PCN-1800N series VHF TV transmitter, including information on the separately installed equipments of the Water pump for cooling.

Information for each units used in this transmitter should be referred to the each of unit instruction manuals.

2-2 General

The PCN-1800N series VHF TV Transmitter is the latest VHF TV transmitter used for TV broadcasting.

The major features are as follows.

(1) Easy conversion to digital TX

NEC has come up with a new digitalized exciter that enables easy conversion from analog to digital through the replacement of software in our newest transmitter series.

(2) High-Performance Exciter

Nonlinear distortions are corrected at the Video stages. Among the nonlinear parameters are the luminance nonlinear distortion, the differential gain (DG), the differential phase (DP), and the incidental carrier phase modulation (ICPM). All of these items are individually corrected.

Higher reliability, performance, and maintainability can be obtained. Also employs one pedestal AGC circuit and one surface acoustic wave vestigial sideband (SAW VSB) filter.

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GWP-G22906

(3) Compact Size

Its compact size（down to 78% by comparison with our recently type）contributes to the effective use of the station building inside space.

(4) High Reliability

This transmitter series incorporates a function for monitoring the status of each component unit to prevent major faults from occurring and assure continuation of stable operation.

(5) Excellent Maintenance Function

A Digital Processing Corrector (DPC) is employed in the exciter to achieve automatic linearity correction and the inter modulation product (IMP) can readily be minimized with “one-touch” operation without having to use a demodulator. LCD display ensures a user-friendly man-machine interface.

(6) Ease of Operation and user-friendly monitoring

Equipped with a display panel (LCD Display) for visually displaying operating and trouble statuses for the operator so as to be perceptible at a glance. Besides the “LCD Display”, the trouble displaying functions are distributed among several units : VHF Exciter, VHF PA (Power Amplifier unit).

The TX control unit features a built-in web server and SNMP. By connecting transmitters to a local area network, transmitters can be monitored and controlled from a remote PC with a web browser. Monitoring and control are also possible using the SNMP manager.

In order to improve the operational flexibility of the TV transmitter and the life expectancy of the PA, a wide variety of circuit design improvements have been incorporated.

2 - 2

GWP-G22906

2-3 Coding System

The coding system of the PCN-1800N series is as follows.

Analog TV Transmitters (VHF Band) : PCN-18 a b c N ／ d e

a : Output Power

05 : 5kW 07 : 7kW 10 : 10kW 12 : 12kW 15 : 15kW 17 : 17kW 20 : 20kW 30 : 30kW 35 : 35kW 40 : 40kW

b : System type

SS : Single Transmitter with Single Drive SSP : Single Transmitter with Dual Drive, Multiple PAs and Dual Cooling SSPE : Single Transmitter with Dual Drive SSW : Dual Transmitter in Active Reserve

c : Cooling Type

Q : Liquid cooling

d : Visual/Aural Power Ratio

1 : 10:1

e : Amplifier Mode

Nil : Separate Amplifier C : Common Amplifier

2 - 3

Table 2-1 System Configuration of TV Transmitter

SS type SSP type SSW type TX TYPE Single Transmitter Single Transmitter with Redundancy Dual Transmitter in Parallel Operation (Single Exciter, Single Cooling) (Dual Exciter, Dual Cooling) OUTLINE DIAGRAM

2 -

Main/Stand-by exciters are switched automatically in case of trouble on main exciter. EXCITER 1 set : Single Operation 2 sets : Passive Reserve Operation 2 sets : Passive Reserve Operation OPERATION SYSTEM COOLING SYSTEM Single Operation Passive Reserve Operation Each separate transmitter performs single operation GWP - G22906

GWP-G22906

2-4 Principal Characteristics

2-4-1 Entire Transmitter

Table 2-2

Power Output Visual : 15kW×2 (Sync Peak) Aural : 1.5kW*×2 (Average) Frequency range : One specified channel in VHF Band Ⅲ Frequency stability : ±1.0×10 −7 over a period of 1 year with internal reference Power supply Voltage : 220V,3phase,4wire Voltage stability : +10%, -15% Frequency stability : ±2% Power consumption : Approx. ** kVA Dimension Transmitter-Rack-1 Width : 590mm Height : 2000mm Depth : 1000mm Ambient requirement Temperature range : Over the temperature range 0°C to +45°C : Transmitter specifications are guaranteed Relative humidity : 90% maximum Altitude : As determined by your site location

NOTE : * In the case of the two-sound carrier system, fa1 = 3kW ** See TEST DATA.

2 - 5 GWP-G22906

2-4-2 Specifications

(1) Visual Transmitter

625-Line 625-Line 625-Line 525-Line Characteristics ITU-R ITU-R ITU-R ITU-R Standard-B/G Standard-D/K Standard-I Standard-M Class of Emission C3F Operating Frequency -Ⅲ Range One designated VHF TV channel in Band

Carrier Frequency −7 Stability ±1.0×10 over a period of 1 year Load Impedance 50Ω with VSWR ≤1.5 Input Level Sync. 0.3V ±6dB Video 0.7V Input Impedance 75Ω Return loss not 75Ω Return loss not less than 34dB up to 5MHz less than 34dB up to 4.2MHz AM Noise −50dB (p-p) or better Periodic noise Unweighted continuous −52dB (r.m.s.) or better random noise Weighted continuous −60dB (r.m.s.) or better random noise Unwanted Radiations Spurious Radiation 60dB below the carrier and power not exceeding 12mW.

Harmonic Radiation The same limits as for the spurious radiation

Linear Distortion Amplitude vs Refer to Fig. A Refer to Fig. B Refer to Fig. C Refer to Fig. D Frequency Response Group Delay vs Frequency Response up to 4.8MHz ±50nS up to 4.8MHz ±50nS up to 4.8MHz ±50nS up to 2MHz ±50nS • Transmitter at 3.58MHz ±50nS without RX at 4.18MHz Precorrection ±100nS up to 4.5MHz ±50nS up to 4.5MHz ±50nS up to 4.5MHz ±50nS • Transmitter 4.5 ∼ 4.8MHz 4.5 ∼ 4.8MHz 4.5 ∼ 4.8MHz up to 2MHz ±50nS with ±100nS ±100nS ±100nS at 3.58MHz ±50nS RX precorrection at 4.18MHz (Deviation from ±100nS ideal curve)

2 - 6 GWP-G22906

(continued)

625-Line 625-Line 625-Line 525-Line Characteristics ITU-R ITU-R ITU-R ITU-R Standard-B/G Standard-D/K Standard-I Standard-M Waveform Response 2T Pulse Within 2%K rating Line tilt Within ±1% (1%K rating) Field tilt Within ±2% (1%K rating) Nonlinear Distortion Diff. Gain Within ±5% at 4.43MHz Within ±5% at 3.58MHz Diff. Phase Within ±5° at 4.43MHz Within ±5° at 3.58MHz Peak Sync. Output Better than ±2% for any picture level Stability Black Level Stability Better than ±2.5% for any picture level Incidental Phase During full sinusoidal modulation of the visual transmitter between 50 and 15,000Hz, Modulation −46dB or less, relative to ±50kHz deviation. Phase modulation less than ±4° *1：with automatic correction *2：For any picture level and variation of ±6dB in input sync-pulse amplitude

2 - 7 GWP-G22906

(continued)

dB Fig. A +2 ITU-R Standard - B/G 0 Freq. (MHz) Limits (dB) −2 −4.43 −30 / － −4 −4.43 to −1.25 −20 / － −6 −1.25 to −0.75 +0.5 / － −8 −0.75 +0.5 / −4.0 −10 −0.5 +0.5 / −1.5 −12 0 to +1.5 +0.5 / −0.5 −14 +1.5 Ref. −16 +1.5 to +4.5 +0.5 / −0.5 −18 +5.0 +0.5 / −2.5 −20 +5.0 to + 5.5 +0.5 / －－ −30dB −26 +5.5 −26 / −4.43 −1.25 fo +1.5 +3.0 +4.43 +5.5MHz − −0.5 0.75 +5.0 dB Fig. B +2 0 ITU-R Standard - D/K −2 Freq. (MHz) Limits (dB) −4 −4.33 ± 0.1 −30 / － −6 −4.23 to −1.25 −20 / － −8 −1.25 to −0.75 +0.5 / － −10 −0.75 +0.5 / −4.0 −12 −0.5 +0.5 / −1.5 −14 0 to +1.5 +0.5 / −0.5 −16 +1.5 Ref. −18 +3.0 to +4.5 +0.5 / −1.0 −20 +6.0 +0.5 / −4.0 + + + － −30dB 6.0 to 6.5 0.5 / +6.5 −20 / － −4.33 +0.1 −1.25 fo +1.5 +3.0 +4.5 +6.5MHz −0.75 −0.5 +6.0

dB Fig. C +2 ITU-R Standard - I1 0 Freq. (MHz) Limits (dB) −2 − − － −4 4.43 30 / － −6 −4.43 to −1.25 −20 / − − + － −8 1.25 to 0.75 0.5 / − + − −10 0.75 0.5 / 4.0 − + − −12 0.5 0.5 / 1.5 −14 RATE OF CHANGE > 12dB/MHz 0 to +1.5 +0.5 / −0.5 −16 +2.0 Ref. −18 +2.0 to +4.5 +0.5 / −0.5 −20 +5.0 +0.5 / −2.5 RATE OF CHANGE < 2dB/MHz +5.5 +0.5 / −4.0 −30dB +6.0 −20 / － −4.43 −1.25 fo +2.0 +4.5 +6.0MH z −0.5 + + −0.75 5.0 5.5

2 - 8 GWP-G22906

(continued)

dB Fig. D + 2 ITU-R Standard - M 0 Freq. (MHz) Limits (dB) − 2 −3.58 −42 / － − 4 −3.58 to −1.25 −20 / － −6 −1.25 to −0.75 +0.5 / － − 8 −0.75 +0.5 / −4.0 −10 −0.5 +0.5 / −1.0 − 12 0 to +1.5 +0.5 / −0.5 − 14 +1.5 Ref. − 16 +1.5 to +3.6 +0.5 / −0.5 − 18 +4.18 +0.5 / −2.5 − 20 +4.18 to +4.75 +0.5 / － −30 － −42dB +4.75 −30 / −3.58 −1.25 fo +1.5 +3.6 +4.75MHz −0.75 −0.5 +4.18

+10% + +5% 7% +3% Fig. E 0 −3% Step response −7% −5% −10%

−0.4 −0.2 −0.1 0 0.1 0.2 0.4 1.0

Rising Limits (%) time Time (µS) I TU-R Standard - B/G ITU-R Standard - D/K 100% −10% ±0.065 −− −10 −5% −7% −3% 0 ±0.075 −10 −− +3% +7% +5% ±0.1 +11 +11 +10% ±0.2 ±7 ±7 ±0.4 to 1.0 ±5 ±5 ±0.4 to 1.0 ±3 ringing ±3 ringing (f < 4MHz) (f < 5MHz) Rising time Less than 0.13µS Less than 0.15µS

2 - 9 GWP-G22906

(2) Aural Transmitter

625-Line 625-Line 625-Line 525-Line Characteristics ITU-R ITU-R ITU-R ITU-R Standard-G Standard-K Standard-I Standard-M Class of Emission F3E Output Power 1/10 of the output power of visual transmitter Operating Frequency Ⅲ Range One designated VHF TV channel in Band-

Carrier Frequency −7 Stability ±1.0×10 over a period of 1 year Load Impedance 50Ω with VSWR ≤1.5 Input Level −10 ∼ +10dBm for -4dBm to +16dBm for ±50kHz deviation ±25kHz deviation Input Impedance (1)600Ω, Return loss better than 30dB between 30Hz and 15,000Hz. 600Ω, Return loss not less than 30dB between 30Hz and 15,000Hz. (2)75Ω, Return loss better than 30dB between 30Hz and 120kHz Modulation Capability Up to ±100kHz deviation FM Noise −49dB or better, −55dB or better, relative to 100% mod. at 400Hz. relative to 100% mod. at 400Hz. AM Noise −45dB or better (with no mod.) Synchronous AM −40dB or better Noise (with 100% mod.)* Amplitude vs. Within ±0.5dB Frequency Response between 30 and Within ±0.5dB between 30Hz and 15,000Hz of 50µS ideal (with 50% mod.) 15,000Hz of 75µS pre-emphasis curve. ideal pre-emphasis curve. Harmonic Distortion Within 0.5% between 30Hz and 15,000Hz. (with 100% mod.) Unwanted Radiation The same limits as for the visual transmitter.

＊： Relative to 100% AM modulation. RF

Unwanted Radiations Spurious radiation 60dB below the carrier and power not exceeding 12mW.

Harmonic radiation The same limits as for the spurious radiation

Intermodulation -53dB(3 Tone Intermodulation Products) products

2 - 10 GWP-G22906

2-5 Composition

It is recommended that operational personnel become familiar with the various components of the transmitter and their type names from both a functional and physical point of view. This will assist in the proper operation and maintenance of the transmitter.

2-5-1 Functional Composition

Separate functions of the transmitter are grouped easily into the following five circuit sections, in which equipment, units and panels with their type names are shown in the following tables.

(1) Exciter Section

Q’ty 1) DM-3100AB Exciter 2

2) HPC-1558 Exciter Switch 1

(2) Power Amplifier Section Q’ty 1) VA3000QE PA Unit 12

2) 6-Way Divider 2

3) 6-Way Combiner 2

(3) Control and Monitor Section

Q’ty 1) HPB-1508 TX Control Unit 2

2) HPC-1559 RF Monitor 2

3) HPC-1556 Interface Board 2

4) LCD Display (option) 2

5) HPC-1253B SYSTEM Control 1

6) ACB Panel 1

7) MS Panel 1

2 - 11 GWP-G22906

(4) Cooling Equipment Section Q’ty 1) Pump Rack 2

2) ACB Panel (for H. EXC) 2

3) Heat Exchanger 2

(5) Coaxial Equipment Section Q’ty 1) Low Pass Filter 2

2) Band pass Filter 2

2 - 12 GWP-G22906

2-5-2 Physical Composition

Outside View of typical PCN-1800N series transmitter are shown in Fig.2-1. The PCN-1800N Transmitter up to 20kW is mounted in one rack which accommodates exciters, PAs, and control unit.

PCN-1805SSQN/1C PCN-1820SSPQN/1C 5kW Single transmitter 20kW Dual Exciter transmitter

Fig. 2-1 Outside View of the PCN-1800N series Transmitter

2 - 13

SECTION.3 FUNCTIONAL DESCRIPTION

GWP-G22906

SECTION. 3 FUNCTIONAL DESCRIPTION

This section furnishes the operator with sufficient information pertaining to the functions of the PCN-1800N series by reference to the circuit sections introduced in 2-5, as well as to the block diagram of Fig. 3-1.

EXCITER POWER OUTPUT TS CIRCUITS AMPLIFIER FILTER To Antenna See 3-1 See 3 -2 See 3-4

TRANSMITTER COOLING Power CONTROL SYSTEM Supply SYSTEM See 3-5 See 3-3

Fig. 3-1(a) Block Diagram of TV Transmitter (S type)

TS EXCITER CIRCUITS See 3-1 EXCITER POWER OUTPUT SWITCHING AMPLIFIER FILTER To Antenna CIRCUIT See 3 -2 See 3-4 See 3-1

TS EXCITER CIRCUITS See 3-1 TRANSMITTER COOLING Power CONTROL SYSTEM Supply SYSTEM See 3-5 See 3-3

Fig. 3-1(b) Block Diagram of TV Transmitter (P type)

3 - 1 GWP-G22906

3-1 Exciter Section

The exciter section is composed of DM-3100AB Exciter and Exciter switch. In the case of single transmitter exciter switch is not applied.

3-1-1 DM-3100AB Exciter

Principal features of the DM-3100AB Exciter are summarized below.

(1) Digitalized modulation and linear and non-linear correction

The visual VSB modulation, the white clip, the aural FM modulation and the linear and non-linear correction are executed at the digital base band. Non-linear distortion caused by PA and linear distortion are corrected automatically by using internal test signal and feedback signal from TX output. Also these distortions can be corrected by manually.

(2) Direct quadrature modulation and AGC

The digital I/Q signals are converted to analogue, then converted to RF directly by the quadrature modulation circuit.

AGC is done at RF stage. The AGC circuit for visual is of the pedestal type, operating to hold the pedestal or black level constant. If there is no modulation present, the AGC is automatically switched OFF. The AGC circuit for aural is of the average power type. The gain variation that can be controlled by AGC is restricted to approximately ±1dB.

(3) Synthesizer

The synthesizer incorporates voltage-controlled crystal oscillators (VCXO) with the local frequencies. This frequency is locked to a 10MHz reference frequency.

The 10MHz reference frequency is available from the crystal oscillator incorporated in the exciter and high frequency accuracy may be achieved by the use of an external reference frequency from a rubidium oscillator or GPS receiver. This permits high frequency precision, assuring high short-term stability and reduction of SSB noise.

3 - 2 GWP-G22906

3-1-2 Characteristics

Table 3-2 lists the electrical characteristics of the exciter

Table 3-1 Electrical Characteristics

Function Characteristics Overall Characteristics : Class of Modulation Visual : C3F negative modulation Aural : F3E Output Frequency One channel in band III Output Level Visual : 40mW sync peak Aural : 10mW Output Connector BNC-J Dimensions 480mm (width) × 44mm (height) × 580mm (depth from front panel) Weight Approx. 8kg Visual Characteristics : Input Signal 1 volt p-p composite, 75 ohms unbalanced Input Connector BNC-J Precorrection of nonlinearity ICPM correction Sync level PM : ±10° White level PM : ±5° Video correction Black level DG : ±5% White level DG : ±5% Black level DP : ±5° White level DP : ±5° Luminance linearity : ±10% (White or black level) Aural Characteristics : Input Signal −4dBm ∼ +16dBm, audio (for ±50kHz deviation) −10dBm ∼ +10dBm, audio (for ±25kHz deviation) Frequency Deviation ±50kHz or ±25kHz Frequency Response Within ±0.5dB, 30Hz to 15kHz Distortion Better than 0.5% FM Noise Better than −66dB referred to ±50kHz deviation, 30Hz to 15kHz band width, with 50µS de-emphasis Better than −60dB referred to ±25kHz deviation, 30Hz to 15kHz band width, with 75µS de-emphasis

3 - 3 GWP-G22906

3-1-3 Exciter Switch

Exciter switch is composed of relays for switching visual signal and for switching aural signal. Changeover is executed by a command from the TX Control.

3 - 4 GWP-G22906

3-2 Power Amplifier Section

3-2-1 VA3000QE Power Amplifier

The VA3000QE is a power amplifier of peak output power 2000W, which is used for common amplification of Analog TX.

Unit gain is approximately 76dB. The gain can continuously be varied by the input variable attenuator (LEVEL ADJ).

3 - 5 GWP-G22906

Table 3-2 Electrical characteristics of VA3000QE PA for common amplification of Analog TX. Item Description Circuitry Transistor 14 The number of cascade transistor stage 3 External configuration Dimension 479(W) × 105 (H) × 630 (D) (*Not Include Front Panel)

Weight Approx. 30kg (*Include Front Panel) Input connector BNC-J, front Output connector WX-20D plug-in, rear Power supply connector Plug, rear Control connector Plug, rear Current checking Plug, rear Type of unit Front-operated plug-in type Cooling system Jet water cooling & Cold plate cooling Protective devices Over input protection Approx. +2dB at rated input power Temperature protection Automatic output interruption at 80°C Load variation coverage Non-abnormal operation in short-time open or short circuit. RF power output 2000W sync peak RF power input 0.05mW sync peak Gain 76dB Power supply voltage 200/208/230V AC, 3phase Power supply 102A50V (build in main body) Channel coverage One channel specified within 170 ∼ 230MHz Frequency response Better than ±0.5dB, within any channel board Gain stability Better than ±0.5dB Spurious radiation Less than −60dB, within band Less than −24dB, out of band *1 Differential gain Within +15%～ -15% Differential phase Less than 30° Sync. compression Less than 35% Sync. peak and black level stability Less than 2% Sag Less than 2% Power consumption Approx. 5100W

3 - 6 GWP-G22906

3-3 Cooling Section

This transmitter is cooled with coolant fed from an external pump rack. The coolant which flows into the transmitter is branched to cool the PAs and then cools the resistors for the combiner and is discharged, combined again into one route, from the transmitter.

For details, refer to the Instruction Manual of liquid cooling system (HO2-344491-2**), Pump Rack (HO2-344492-2**) in section 6, and Heat Balance in 1, General, of Vol. II.

3-4 Output Section

This section consists of the low pass filter for rejecting the spurious of the outputs of the power amplifier section.

Fig. 3-7 shows the schematic diagram of this section

Output of PA Output Antenna LOW PASS FILTER

Fig.3-7 Schematic Diagram

Table 3-3 Attenuation characteristic of filter

Attenuation[dB] Filter Size 500MHz ~ 600MHz ~ 700MHz ~ NAX-77D 15 25 30 NAX-39D

3 - 7 GWP-G22906

3-5 Control Section

3-5-1 General

The transmitter is controlled mainly by the HPC-1508 TX Control. Two control modes, LOCAL and REMOTE, are provided. When the LOCAL mode is chosen, the transmitter is controlled on the operation panel mounted on the front panel of the transmitter, and does not accept external control. The LOCAL mode is chosen mainly for maintenance work. In the REMOTE mode, the transmitter accepts control from external control equipment, and also is automatically control led. In this case the control from the operation panel becomes ineffective. For the normal operation, select the REMOTE mode.

3-5-2 Control Method

Each of the controlled circuit sections of the transmitter sends out or receives number of status signal via solid-state relays, and electromagnet switches.

The transmitter employs a mechanical interlock system so that its component units are switched ON or OFF in only a given sequence. This interlock system, is incorporated as the decision circuit in the logic circuits of the TX Control Unit.

3-5-3 TX Control Unit

The condition of the transmitter is monitored with a TX Control Unit (HPC-1508). The TX Control Unit receives status signals and alarm signals form each unit in the transmitter, subjects the signals to decision and processing, thus conducting monitor and control of the transmitter.

In addition, the condition of the transmitter detected by the TX Control Unit is displayed in details on the LCD display on the front panel.

3 - 8 GWP-G22906

(1) ON CONTROL

START

No (REMOTE MODE) LOCAL

“ LOCAL “ LED lights. “ LOCAL “ LED Yes lights . LOCAL REMOTE TX ON TX ON

ON CONT MEMORY

EXTERNAL No INTERLOCK

Yes “ INTERLOCK ” LED lights.

RECYCLING Yes HOLD

PA PS ON COOLING ON

COMMUNICATION No WITH PA OK ?

Yes

RF ON

“ TX ON ” LED lights.

END

Fig. 3-8 Flow Chart of ON Control

3 - 9 GWP-G22906

(2) OFF CONTROL

START

No (REMOTE MODE) LOCAL

“ REMOTE” LED lights “ LOCAL” LED lights Yes

LOCAL REMOTE TX ON TX ON

ON CONT MEMORY OFF

PA PS OFF

“ TX ON” LED goes off

COOLING No OFF DELAY 39sec Yes

END

Fig. 3-9 Flow Chart of OFF Control

3 - 10 GWP-G22906

(3) Control when a fault is encountered

a) Faults

A fault of a transmitter is classified into three (3) kinds as follows:

1) When this kind of fault is encountered, the operation of a transmitter is stopped coercively. And the transmitter must be protected absolutely from this kind of fault.

2) Even if this kind of fault is encountered, the transmitter can continue its operation by switching the system automatically into the stand-by system. The exciter section and the cooling section both adopting the stand-by systems are controlled.∗

∗ Stand-by systems are only P type TX

3) If this kind of fault is encountered, the transmitter is not stopped coercively, however, the signals informing a fault must be sent to the external circuit. When a fault is encountered at a transmitter, the sensor detects the fault and transmits the response to the TX control. Then, the TX control decides the kind in which the fault is encountered, thus, controlling the transmitter.

• Faults from which the transmitter must be protected;

The following faults, if encountered require the transmitter to be protected.

3 - 11 GWP-G22906

Table 3-4 Faults from which the transmitter must be protected

Component to be Item Fault Condition Control Item Protected 1. PA TEMP The temperature on the chassis of the PA Faulty unit : OFF PA is over preset temperature. 2. REF The reflected power is over. TX : OFF  with notching   operation  3. COOLANT The coolant temperature is over the PA TX : OFF TEMP set temp. PA PS 4. COOLANT The coolant pressure is abnormal. PA TX : OFF PRESSURE after 20sec 5. COOLANT The coolant tank on the pump rack PUMP PUMP : OFF EMPTY has become empty. TX : OFF

• Faults which, if encountered, will cause indication only (see Table 3-5).

When one of these faults is encountered, the TX control unit will hold the LED indication “ALARM” on the operation panel and send out a fault answer to the external circuitry.

∗ Fault indications on the LCD Display are not hold (locked).

3 - 12 GWP-G22906

Table 3-5 Faults which, if encountered, will cause indication only

Item Fault Condition Remarks 1. Exciter The output level of the exciter lowers by Another exciter is selected. 3dB. 2. PA The output level of PA lowers by 2dB. Even when the output level of the exciter is not normal, the PA will not be determined to be abnormal. 3. Output Power The output power of the transmitter rises by 0.8dB or lowers by 1.0dB.

b) Reset

To reset the transmitter after one of the faults described in item a) above is encountered, depress the Reset switch to restart the transmitter and extinguish the LED indication on the operation panel. It should be noted, however, that although reset can be carried out in both Local (on the operation panel) and Remote modes, the LED indication on the operation panel can be extinguished in the Local mode only.

3 - 13 GWP-G22906

3-5-4 Operation of Transmitter

The operation of transmitter is carried out with front panel of TX Control composed of an LCD display that displays condition of the transmitter and, a operation button. that carries out start/stop of the transmitter.

Setting of the output frequency and clock time is made on TX Control.

Fig. 3-10 shows visual appearance of the front of TX Control.

The procedure of the operation on this panel is described in section 4, Operation and Adjustment, in detail.

«5» «4» «8» «9» <3> <2> «2» <8> <1> <4>

<5> «3» <6>

«10» «11» «1» «6» «7» <7>

Fig 3-10-1 Outside View of TX Control (S Type)

«12» «14» <9> <11>

«13» «15» <10> <12>

Fig 3-10-2 Outside View of TX Control (P Type)

3 - 14 GWP-G22906

• Control Switch

«1» MASTER CONTROL switch : When operation any control or select switch, Operate this switch simultaneously.

«2» TX ON control switch : For TX ON control.

«3» TX OFF control switch : For TX OFF control.

«4» REMOTE select switch : For select REMOTE mode.

«5» LOCAL select switch : For select LOCAL mode.

«6» RESET switch : For alarm reset.

«7» CPU RESET switch : For CPU reset of the TX control

«8» MENU switch : For display MENU screen

«9» ESC switch : For quit previous operation or return to previous screen.

«10» OPTION switch : For display setting screen with ESC switch.

«11» SELECT switch : For move cursor to select items and determine items .

*1«12» EX-A select switch : For select EX-A

*1«13» EX-B select switch : For select EX-B

*2«14» PUMP-A select switch : For select PUMP-A

*2«15» PUMP-B select switch : For select PUMP-B

3 - 15 GWP-G22906

• Indicator

<1> TX ON : Transmitter is in ON status (Amber indication)

<2> REMOTE : Indicates the Remote mode (Amber indication)

<3> LOCAL : Indicates the Local mode. (Red indication)

<4> POWER-A/B : Indicates the TX Control is power on. (Amber indication)

<5> INTERLOCK : The output power of the transmitter can be applied to external equipment. (Green indication)

<6> WARNING : Some warnings occur in the Transmitter. (Amber indication)

<7> TX ALARM : Some alarms occur in the Transmitter. (Red indication)

<8> CPU ALARM : Indicates the CPU is fault condition. (Red indication)

*1<9> EX-A : Indicates the Exciter-A is in use. (Amber indication)

*1<10> EX-B : Indicates the Exciter-B is in use. (Amber indication)

*2<11> PUMP-A : Indicates the Pump-A is in use. (Amber indication)

*2<12> PUMP-B : Indicates the Pump-B is in use. (Amber indication)

Note) *1 : Provided only when the exciter control is of changeover type of passive reserve exciters.

*2 : Provided only when the control of pumps is of changeover type of passive reserve pumps.

3 - 16 GWP-G22906

3-6 Monitoring Section

This transmitter is provided with meters to allow output power check of the transmitter and parameters of each PA. The output power is detected by the detector circuit in the TX control unit and displayed by digital indication on LCD display. Further, monitor section incorporates an output power Lower and Higher detect circuit and in case the output power is not normal, an output power fault answer is sent to the TX control section. The monitor section is also furnished with telemetry, playing an important role in the control and monitoring of the transmitter.

The parameters of each PA are sent to the TX control section.

PA 1

EXCITER TS INPUT OUTPUT

PA n S U

divider T combiner ) ) A F F T R S ( R

/ (

L T T C O S U E R P U L T T T F N U E A O O R T C S

TX CONTROL

Fig. 3-11 Metering Circuit for RF Signals

3 - 17 GWP-G22906

3-7 Interface

This subsection describes connection of the transmitter to external equipment. For the interface position and wiring routes, refer to the description in General of Vol. II, and mechanical drawings.

3-7-1 AC Line (See Table 3-6)

Table 3-6 Connect for AC Line

Transferred No. Item Remarks through AC Line directly is connected to 1 AC supply voltage F101 L1,L2,L3,N,PE of Line side. 2 PA(Power Amplifier) ACB101 supply voltage：3 x 220V 3 EX and Control ACB201 TB101(N) is the neutral terminal of the and transmitter. TB101 (N) 4 Ground Terminal TB301 TB301 is the ground terminal of the transmitter.

Notice ∗ In case of 3 phase and 3 wire, TB101(N) is not used.

3 - 18 GWP-G22906

3-7-2 Signal Line (See Table 3-7)

Table 3-7 Connectors for Signal on Interface Panel

Transferred No. Item through Remarks 1 Video IN (Line) J001 Passes the 75Ω transmitting video signal to the exciter. 2 10MHz IN J002 The reference frequency input 3 Audio IN J003,J004 600Ω audio signal to the exciter.

3-7-3 RF Monitor (See Table 3-8)

Table 3-8 Connectors for 50Ω RF Monitor

Transferred No. Item through Remarks 1 TX MON J110 The output power (of the visual and aural output powers) from the transmitter output.

3 - 19 GWP-G22906

3-7-4 Control Line

There are two types of interface for connection with external remote control, parallel (relay contact) type and serial communication type. Both types make interface with external control equipment through an interface board. The interface board is shown in Fig. 3-12. The interface board is mounted on the rear side of the transmitter.

J4 J3 Serial Communication on Interface Serial Communication on J5 (RS-485) for daisy chain Interface (RS-232C/485) System Control

J1 J2 Parallel interface Parallel interface (Command) (Status)

Fig. 3-12 Outside View of Interface Board

3 - 20 GWP-G22906

3-7-4-1 Parallel Interface

The connection of the parallel interface with remote control equipment is made using interface board connectors (J1 and J2). The control items are listed in Table 3-9

Table 3-9 Connectors for Remote control (Interface Board J1 to Remote control Equipment)

Terminal No. Use No. Item Description + − 1 REM TX ON CONT 1 15/16 ON command from remote control unit. 2 REM TX OFF CONT 2 15/16 OFF command from remote control unit. 3 REM RESET 3 15/16 Upon occurrence of a fault, hold status indication of transmitter and OFF status indication sent out to remote site is released. 4 EX-A Select (*1) 4 15/16 Command to select the EX-A 5 EX-B Select (*1) 5 15/16 Command to select the EX-B 6 COOLING-A Select(*2) 6 15/16 Command to select the BLOWER/PUMP-A 7 COOLING-B Select(*2) 7 15/16 Command to select the BLOWER/PUMP-B 8 H. EXC-A Select (*3) 8 15/16 Command to select the H.EXC-A 9 H. EXC-B Select (*3) 9 15/16 Command to select the H.EXC-B COMMAND 10 AUTO ON CONT 10 15/16 ON command by external equipment. 11 AUTO OFF CONT 11 15/16 OFF command by external equipment. 12 R/C OFF 12 15/16 When in the remote mode, in case of remote control line failed, the R/C OFF signal entered into TX control. The DIP switch of TX control set as below starts or stops the TV transmitter. SW6-7(ON) : TX ON effective SW6-8(ON) : TX OFF effective

3 - 21 GWP-G22906

Table 3-9 (continued)

Terminal No. Use No. Item Description + − 13 EXT. INTERLOCK 17 30/31 The output power of the transmitter can be ANS applied to external equipment. 14 TX LOCAL ANS 18 30/31 TX Local Mode 15 TX REMOTE ANS 19 30/31 TX Remote Mode 16 TX ON ANS 20 30/31 Means the TX ON condition. 17 TX MAINTENANCE 21 30/31 TX Maintenance Mode 18 EX-A USE ANS (*1) 22 30/31 Means that the exciter-A is in use. 19 EX-B USE ANS (*1) 23 30/31 Means that the exciter-B is in use. STATUS 20 COOLING-A USE ANS 24 30/31 Means that the blower/pump-A is in use. (*2) 21 COOLING-B USE ANS 25 30/31 Means that the blower/pump-B is in use. (*2) 22 H.EXC-A USE ANS (*3) 26 30/31 Means that the H.EXC-A is in use. 23 H.EXC-B USE ANS (*3) 27 30/31 Means that the H.EXC-B is in use.

Note) *1 : Provided only when the exciter control is of changeover type of passive reserve exciters. *2 : Provided only when the control of blowers/pumps is of changeover type of passive reserve blowers/pumps. *3 : Provided only when the control of heat exchangers is of changeover type of passive reserve heat exchangers.

3 - 22 GWP-G22906

Table 3-10 Connectors for Remote control (Interface Board J2 to Remote control Equipment)

Terminal No. Use No. Item Description + − 1 EX-A V FAULT 1 41/42 Means that the EX-A visual output power is abnormal. 2 EX-B V FAULT 2 41/42 Means that the EX-B visual output power is abnormal. 3 EX-A A FAULT 3 41/42 Means that the EX-A aural output power is abnormal. 4 EX-B A FAULT 4 41/42 Means that the EX-B aural output power is abnormal. 5 DRIVE PA-A FAULT 5 41/42 Means that the Drive PA-A output power is abnormal. 6 DRIVE PA-B FAULT 6 41/42 Means that the Drive PA-B output power is abnormal. 7 EX SW FAULT 7 41/42 Exciter switch is under the abnormal condition. 8 V OUTPUT FAULT 8 41/42 The visual output power is out of the specified range. 9 A OUTPUT FAULT 9 41/42 The aural output power is out of the STATUS specified range. 10 V REFLECT FAULT 10 41/42 Matching between the visual power combiner and succeeding load is not good. 11 A REFLECT FAULT 11 41/42 Matching between the aural power combiner and succeeding load is not good. 12 ABSORB FAULT 12 41/42 V/A combiner absorbing power is increase and reach to limit of the absorbing dummy load. 13 NOTCHING 1ST 13 41/42 The transmitter is turned off once upon occurrence of a fault in V reflect or A reflect. 14 NOTCH 14 41/42 The transmitter is turned OFF after notching operation causing of a fault in V reflect or A reflect.

3 - 23 GWP-G22906

Table 3-10 (continued)

Terminal No. Use No. Item Description + − 15 V PA OUTPUT FAULT 15 41/42 The output power of some visual PAs is 4dB below the preset level. 16 A PA OUTPUT FAULT 16 41/42 The output power of some aural PAs is 4dB below the preset level. 17 V PA REFLECT 17 41/42 The reflected power of some visual PAs is FAULT over. 18 A PA REFLECT 18 41/42 The reflected power of some aural PAs is FAULT over. 19 PA PS FAULT 19 41/42 Means that the PA PS is under the abnormal condition. 20 V PA TEMP FAULT 20 41/42 The temperature on the chassis of PA is over 21 A PA TEMP FAULT 21 41/42 preset temperature. 22 PRESSURE FAULT 22 41/42 Means that the pressure of the air/coolant became lower than the set point. 23 COOLING-A FAULT 23 41/42 The air pressure/ The coolant pressure in the STATUS 24 COOLING -B FAULT 24 41/42 pump is abnormal. 25 COOLING -A AC 25 41/42 Over-current occurred in AC input of the FAULT water pump causing the thermal relay to 26 COOLING -B AC 26 41/42 actuate. FAULT 27 (H.EXC-A FAULT ) 27 41/42 One fan for H. EXC is abnormal. (WARNING) 28 (H.EXC-B FAULT) 28 41/42 One or more of fans for H. EXC. are abnormal. (FAULT) 29 29 41/42 No use. 30 WATER TEMP HIGH 30 41/42 Means that the temperature of the cooling water became higher than the set point. 31 WATER LEAK 31 41/42 Means that the coolant leak

3 - 24 GWP-G22906

Table 3-10 (continued)

Terminal No. Use No. Item Description + − 32 WATER LEVEL LOW 32 41/42 Means that the quantity of coolant in the coolant tank on the pump rack decreased to a lower level than the set level. 33 WATER LEVEL 33 41/42 Means that the coolant in the coolant tank EMPTY on the pump rack was used up. 34 (CIB COOLING 34 41/42 No use. FAULT) 35 AC MAINS FAIL 35 41/42 Means that AC MAINS which is connected to the transmitter have been abnormal. 36 TOTAL ALARM 36 41/42 Some fault occurred in the transmitter. 37 TOTAL WARNING 37 41/42 Means that some minor fault occurred in the

STATUS transmitter. 38 TX CONT CPU FAULT 38 41/42 Means that the CPU of the TX control is abnormal. 39 COMMUNICATION 39 41/42 Means that communications between the TX FAULT control and the PA is abnormal. 40 DC PS FAULT 40 41/42 Incase of dual power for TX control, when DC PS is turned OFF, this signal is sent out. 41 CONT PS OFF 43 41/42 When the power supply for this TX Control is turned OFF, the TX CONT PS OFF signal is sent out.

3 - 25 GWP-G22906

3-7-4-2 Serial Communication Interface

The connection of the serial communication interface with the remote control equipment is made by means of a connector of the interface board. The serial communication interface has a function to output data displayed on the LCD display. The method of setting and specifications related to serial communications are described below. (1) Setting of hardware

1) Setting of jumpers

Jumpers on the main board in the TX control unit are set as follows.

For positions of jumpers on the main board, see Fig. 3-8.

a) JS507, JS510, JS511, JS512, JS513, JS514, JS515

1-2 : RS-232C

2-3 : RS-485

b) JS508, JS509

1-2 : RS-485 with termination

3-4 : RS-485 without termination

3 - 26 GWP-G22906

2) Setting of Rotary Switch & DIP Switch

The Rotary switch (SW2) & DIP switch (SW3) on the main board in the TX control unit are set as follows.

a) SW2 (Rotary switch)

7 6 5 4 3 2 1 0

SW Position Baud Rate 0 1200bps 1 2400bps 2 4800bps 3 9600bps 4 19200bps 5 38400bps 6 57600bps 7 115200bps

b) SW3 (DIP switch)

8 7 6 5 4 3 2 1

2 1 Serial control

0 0 enabled 0 1 disabled 1 : RTS/CTS control enabled 0 : RTS/CTS control disabled

1 : DTR/DSR control enabled

0 : DTR/DSR control disabled

1 : RS-232C

0 : RS-485 Note) 1 : ON 0 : OPEN

3 - 27 GWP-G22906

• Pull out the TX control unit, remove six screws in the arrow-marked positions, and remove the top cover.

Positions of jumpers on the control board

Fig. 3-13 Control Board (with Top Cover of the TX Control Unit Removed)

3 - 28 GWP-G22906

(2) Serial Communication Connection (See Fig. 3-12, Outside View of Interface Board.)

1) RS-232C

Table 3-11 REMOTE CONTROL (J3) on INTERFACE BOARD

Pin No. Signal 1 2 Receive Data (RXD) 3 Transmit Data (TXD) 4 Data Terminal Ready (DTR) 5 Ground 6 Data Set Ready (DSR) 7 Request to Send (RTS) 8 Clear to send (CTS) 9

2) RS-485

Table 3-12 REMOTE CONTROL (J3) on INTERFACE BOARD

Pin No. Signal 1 2 3 Transmit Data + (TXD +) 4 Transmit Data − (TXD −) 5 Ground 6 Receive Data + (RXD +) 7 Receive Data − (RXD −) 8 9

3 - 29 GWP-G22906

Table 3-13 REMOTE CONTROL (J4) on INTERFACE BOARD for daisy chain

Pin No. Signal 1 2 3 Transmit Data + (TXD +) 4 Transmit Data − (TXD −) 5 Ground 6 Receive Data + (RXD +) 7 Receive Data − (RXD −) 8 9

3 - 30 GWP-G22906

(Connection for 4-wire)

TX J3 J4 3 3 TX-D + TX-D + 4 4 TX-D − TX-D − from to 6 6 previous RX-D + RX-D + next equipment equipment 7 7 RX-D − RX-D −

GND 5 5 GND

INTERFACE BOARD

(Connection for 2-wire)

TX J3 J4 TX-D + 3 3 TX-D + /RX-D + /RX-D + TX-D − 4 4 TX-D − from /RX-D − /RX-D − to 6 previous next equipment equipment 7

5 5 GND GND

INTERFACE BOARD

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3-7-5 System Control Interface (See Table 3-14)

The external interfaces of control items relating to the transmitter are connected through a Interface board. A connector (J5) of the Interface board accepts control commands from the system control and also sends out transmitter status necessary for the system control.

Table 3-14 Connectors for System control in the Output coaxial Equipment (Interface Board J5-System control)

J5 (on the Interface Use No. Item Board) Description Terminal No. + − 1 TX ON CONT 1 14/15 ON command 2 TX OFF CONT 2 14/15 OFF command 3 RESET 3 14/15 Upon occurrence of a fault, hold status indication of transmitter and OFF status indication sent out to remote site is released. 4 AGC OFF CONT 4 14/15 Command to cut off the AGC circuit when another transmitter is shut down. 5 EX A AGC OFF CONT 9 14/15 Command to cut off the A AGC circuit when another transmitter is shut down.

COMMAND 6 EX CHANGE SET 5 14/15 Sends out the EX CHANGE signal as an exciter changeover signal when the exciter in use came to a fault. 7 PA RF OFF CONT 6 14/15 Command to cut off the PA OUTPUT when exciter is changeover. 8 EX IN USE 7 14/15 Sends out the EX IN USE signal to transmitter, which is using EXCITER. 9 TOTAL ALARM 16 34/35 Some fault occurred in the transmitter. 10 TOTAL WARNING 33 34/35 Means that some minor fault occurred in the transmitter. 11 TX CHANGE 17 34/35 Means the occurrence of an abnormality COMMAND which urges changeover to the stand-by

STATUS transmitter. 12 TX CONT PS OFF 18 34/35 When the power supply for this TX Control is turned OFF, the TX CONT PS OFF signal is sent out.

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Table 3-14 (continued)

J5 (on the Interface Use No. Item Board) Description Terminal No. + − 13 TX ON CONT 19 34/35 Means the reception of ON command MEMORY 14 TX ON ANS 20 34/35 Means the TX ON condition. 15 TX REMOTE ANS 21 34/35 TX Remote Mode Operation. 16 PUMP ON ANS 23 34/35 Means the ON condition of PUMP. 17 EX CH COMMAND 24 34/35 Means the occurrence of an abnormality which urges changeover to the stand-by exciter. 18 EX CH CONT 27 34/35 Sends out the EX CHANGE signal as an exciter changeover signal when the exciter

STATUS in use came to a fault. 19 EX IF INPUT 28 34/35 When a signal is entered into the exciter IF INPUT, the IF INPUT signal is sent out. 20 EXCITER FAULT 29 34/35 Output level of the exciter is 3dB below the (NON LATCH) preset level. 21 PA OUTPUT FAULT 32 34/35 The output power of some visual PAs is 2dB below the preset level. 22 (A PA OUTPUT 12 34/35 The output power of some aural PAs is 4dB FAULT) below the preset level.

36 Receive Data+ (RxD+) 37 Receive Data − (RxD-) 23 RS-422 38 Transmit Data + (TxD+) 39 Transmit Data − (TxD-) SERIAL COMM. SERIAL 40 Signal ground

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3-7-6 Others (See Table 3-15)

Table 3-15(a) Connectors for Others

TB1 (on the No. Item Interface Board) Description Terminal No. + − 1 External Interlock 1 2 Receives the close contact when the interlock circuit located outside the transmitter is set up.

Table 3-15(b) Connectors for Others

TB2 (on the No. Item Interface Board) Description Terminal No. + − D/S STEREO Control for selection of stereo mode ∗1 1 4 CONT ∗2 D/S DUAL CONT 2 4 Control for selection of dual sound mode ∗3 D/S MONO ANS 5 8 EXCITER is monaural mode ans. ∗4 D/S STEREO ANS 6 8 EXCITER is stereo mode ans. ∗5 D/S DUAL ANS 7 8 EXCITER is dual sound mode ans.

Note : These items are good for using two sound system only.

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SECTION.4 OPERATION AND ADJUSTMENTS

GWP-G22906

SECTION. 4 OPERATION AND ADJUSTMENTS

4-1 General

This section describes the procedures for starting and stopping of the transmitter as well as the methods of adjustment of the component sections in the sequence of powering these sections.

Before starting the equipment, inspect these sections for anything abnormal and correct or repair as required.

Prestarting Inspection and Service:

(1) The operator should be alert to take prompt action against any emergencies before starting the equipment.

(2) Check conditions of all cables, wires, power lines, and all connections for tightness, continuity, and proper setting.

(3) Check for electrical continuity of each cable connected across the “earth” terminal and grounding bus.

(4) Check all component parts for damage caused in transit.

(5) Check all external connections for proper polarity and wiring.

(6) Check that the commercial power supply voltage is proper.

(7) Check that the functions of all protective circuits and relays are satisfactory.

(8) In performing manual checks and adjustments be sure to turn OFF power switch.

(9) Coaxial equipment is fragile. Handle with utmost care.

Beware of a drop hazard.

(10) Make sure that indoor feeder sections are correctly assembled.

(11) Before starting up transmitter, confirm that no coolant leakage has occurred as follow procedure below.

Open the front panel of TX CONTROL, set the DIP SW (SW8-8) to “ON”(down). And then pump and heat exchanger starts up without starting up transmitter.

4 - 1 GWP-G22906

CAUTION : One of conditions for start-up of transmitter is external interlock. Be care that if this condition is not satisfied, the transmitter can’t be started. Items of the external interlock are shown below.

• Function

The transmitter operation may be initiated by the external interlock signal which is passed through interface terminal TB1-1,2 on the HPC-1556 INTERFACE BOARD. That is, before transmitter operation initiation control (TX ON) is performed, the transmitter output must be connected to the dummy load or antenna. External interlock is provided for preventing erroneous operation in RF power transmission, etc., with the output being open or when the coaxial route connection is not proper. Accordingly, this function operates in either Local or Remote mode.

• Additional Interlock Connections

It is necessary for terminal TB1-1, 2 on the HPC-1556 INTERFACE BOARD to receive closed contact when the external circuitry is in a good condition. When, for example, both the microswitch on the U-link panel and the microswitch which indicates the completion of rotation of the coaxial switch are closed, the condition of the external circuitry is regarded as normal and the “Interlock” LED (green) on the operation panel lights. If this interlock function is not required, strap terminal TB1-1, 2 on the HPC-1556 INTERFACE BOARD.

4 - 2 GWP-G22906

• Designation and function of the components

(1) Transmitter Front Panel (See Fig. 4-1)

«1» «2»

«4» (for PA , rear side of PANEL )

«6» «5» (Internal for TX CONTROL) «7» «3» (Internal for EXCITER)

Fig. 4-1 Front View of the Transmitter

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«1» MAIN (PA) ...... Power ON/OFF breaker of AC mains (PA). Normally, this breaker must be in ON position.

«2» EX/CONT ...... Power ON/OFF breaker of EX/CONT (Exciter and Controls).

«3» EXCITER (Internal) ...... Power ON/OFF switch of breaker PS. Normally, this switch must be in ON position.

«4» PA (Rear side of Operation panel)

...... Power ON/OFF switch of breaker PS. Normally, this switch must be in ON position.

«5» CONTROL (Internal) ...... Power ON/OFF switch of breaker PS. Normally, this switch must be in ON position. Amber LED for indication of power ON lights up when ON is selected and TX CONTROL units are normally.

«6» REMOTE ...... REMOTE selector switch of TX Control. Normally, this switch must be in REMOTE mode. Amber LED for indication of REMOTE lights up when REMOTE is selected.

«7» TX ON ...... TX ON control switch of TX Control. Normally, this switch must be in TX ON position. Amber LED for indication of TX ON lights up when TX ON is selected and TX ON and is received.

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• Transmitter’s Meter (See Fig. 4-2,4-3)

«8» Operation Panel of TX CONTROL

Fig. 4-2 Transmitter Front View

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«9»

Fig. 4-3 Transmitter Rear view

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«8» Operation Panel of ...... Operation Panel of TX CONTROL is control and monitoring TX CONTROL panel for operating the transmitter. It has control switch (push- button type), LCD display, and LED indicators. Metering items can be monitored on the LCD display, as follows.

(i) “MONITOR”(Top View) Normally, LCD display indicates output power, reflected power, IM, MER. Each item is indicated by numerical value.

(ii) “TX STATUS” Select “TX STATUS” function, LCD display indicates each STATUS of transmitter. (iii) “PA STATUS” Select “PA STSTUS” function, LCD display indicates forward power, reflected power, temperature of PA, coupling level of MONITOR, drain DC voltage, Drive PAs drain current, Final stage PAs drain current of each PA individually. Each item is indicated by numerical value.

(iv) “COOLING STATUS” Select “COOLING STATUS” function, LCD display indicates each STATUS of pump rack and the fan of heat exchanger.

«9» Coolant Flow Meter ...... Indicates the flow rate of transmitter coolant.

4 - 7 GWP-G22906

4-2 Operation Panel

The local control of the transmitter is carried out on the operation panel on the front of the TX Control.

The operation panel has the following functions.

• Selection of the control modes

• Control of start/stop of the transmitter

• Control of switching of exciters A and B

• Control of switching of cooling pumps A and B

• Control of switching of heat exchangers A and B for cooling

• Reset of alarm

• Status and alarm display

The outside view of the operation panel is shown in Fig. 4-4.

(1) For the local control, make the operation while pressing the “CONTROL” switch.

(2) If the “TX RESET” is made when the CPU alarm is lighting, the CPU alarm is also reset at the same time.

(3) When on the operation panel the “REMOTE” mode is chosen, the external control becomes possible, and the control on the operation panel becomes impossible.

(4) The alarm indication on the operation panel (TX alarm and CPU alarm) is held in hold status. By means of “REMOTE RESET”, the alarm status is reset, but the LED continues to light. With the “LOCAL RESET”, the status is reset, and the LED goes out.

(5) When the INTERLOCK LED is kept extinguished, the transmitter cannot be activated.

4 - 8 GWP-G22906

«5» «4» « 2» «7» «9» «11» <3> <2> <1> <9> <11> <13>

<8> <4>

<5> <6>

«6» «8» «10» «12» «1» «13» «3» <7> <10> <12> <14>

Fig. 4-4 Front View of Operation Panel

• Control Switch

«1» master CONTROL switch : Make operations using any switches («2» to «12») along with this switch.

«2» TX ON control switch : For TX ON control.

«3» TX OFF control switch : For TX OFF control.

«4» REMOTE select switch : For select REMOTE mode.

«5» LOCAL select switch : For select LOCAL mode.

«6» RESET switch : For alarm reset.

*1«7» EX-A select switch : For select EX-A

*1«8» EX-B select switch : For select EX-B

*2«9» PUMP-A select switch : For select PUMP-A

*2«10» PUMP-B select switch : For select PUMP-B

*3«11» H.EXC -A select switch : For select H.EXC-A

*3«12» H.EXC -B select switch : For select H.EXC-B

«13» CPU RESET switch : For CPU reset of the TX control.

4 - 9 GWP-G22906

• Indicator

<1> REMOTE : Indicates the Remote mode. (Amber indication)

<2> LOCAL : Indicates the LOCAL mode. (Red indication)

<3> TX ON : Transmitter is in ON status. (Amber indication)