HP 35670A Dynamic Signal Versatile two- or Analyzer four-channel high-performance FFT-based spectrum/ Product Overview network analyzer 122 µHz to 102.4 kHz 16-bit ADC

Frequency Range 102.4 kHz 1 channel 51.2 kHz 2 channel 25.6 kHz 4 channel Dynamic Range 90 dB typical Accuracy ±0.15 dB Channel Match ±0.04 dB and ±0.5 degrees Real-time Bandwidth 25.6 kHz/1 channel Resolution 100, 200, 400 & 800 lines Time Capture 0.8 to 5 Msamples (option UFC) Source Types Random, Burst random, Periodic chirp, Burst chirp, Pink noise, Sine, Swept-Sine (option1D2), Arbitrary (option 1D4) The HP 35670A shown with Four Channels (option AY6)

The HP 35670A is a portable two- or piezoelectric integrated circuit power 1C2 HP Instrument BASIC four-channel dynamic signal analyzer supply, analog trigger and tachometer UFF Add 1-Mbyte NVRAM with the versatility to be several inputs, and optional computed order AN2 Add 4-Mbyte RAM instruments at once. Rugged and tracking. (8 Mbytes Total) portable, it’s ideal for field work. Yet UFC Add 8-Mbyte RAM it has the performance and function- Versatile enough to be (12 Mbytes Total) ality required for demanding R&D your only instrument for 100 1D0 - 1D4/UFC bundle applications. Optional features low frequency analysis optimize the instrument for trouble- With the HP 35670A, you carry Laboratory-quality shooting mechanical vibration and several instruments into the field in measurements in the field noise problems, characterizing one package. Frequency, time, and Obtain all of the performance of your control systems, or general spectrum amplitude domain analysis are all bench-top analyzer in a portable and network analysis. available in the standard instrument. instrument. Build on that capability with options Take the HP 35670A that either add new measurement Ease-of-use where it’s needed! capability or enhance all measure- Portability, versatility, and perfor- Whether you’re moving an instrument ment modes. mance are valued attributes, but to be around the world or around the lab, AY6 Add Two Channels (Four Total) really valuable an instrument must portability is a real benefit. Small 1D0 Computed Order Tracking also be easy to use. The HP 35670A enough to fit under an airplane seat, 1D1 Real-Time Octave has a friendly front panel, plus online the HP 35670A goes where it’s Measurements help that’s always available to answer needed. But there’s more to portabil- UK4 Microphone Adapter and your questions. An interactive ity than size. Like a nominal 12- to Power Supply measurement state lets you configure 28-volt dc power input and self- 1D2 Swept-Sine Measurements the instrument setup from a single contained features that do not require 1D3 Curve Fit and Synthesis display. external hardware, such as built-in 1D4 Arbitrary Waveform Source HP 35670A Dynamic Signal Analyzer

Versatile Measurement Modes Standard and optional measurement modes include: • FFT Analysis • Real-Time Octave Analysis Powerful Markers HP Instrument BASIC (option 1D1) Extract information Built-In 3.5 inch (Option 1C2) • Order Analysis (option 1D0) from measurement Flexible Disk Drive Develop a custom user- • Swept-Sine (option 1D2) data with trace and Store instrument interface, integrate • Correlation Analysis special markers: states, programs, time several instruments and • Histogram Analysis • Individual Trace captured data, peripherals into a system • Time Capture • Coupled Trace waterfall data, trace using the HP 35670A as All measurement options • Absolute or Relative data, limits, math the system controller, may be retrofitted. • Peak Search functions, data tables, or simply automate • Harmonic and curve fit/synthesis measurements. • Band tables. • Sideband Power Supported disk formats • Waterfall are HP-LIF and • Time Parameter MS-DOS. Internal RAM RPM Display • Frequency and may also be formatted Read RPM in any Damping as storage disk. measurement mode

Shown with option AY6 - Add Two Channels

Math Functions Input Channels Powerful math and • Analog A-weighted data editing functions filters (switchable) Precision to quickly modify • Transducer measurement results. Online Help Measurements sensitivity input • 16-bit ADC (Curve fit and Applications frequency response oriented help • Engineering units: • ±0.15 dB spectrum g, m/s2, m/s, m, in/s2, ampltude accuracy synthesis available is just a few with option 1D3.) keystrokes away. in/s, in, mil, kg, dyn, • ±0.04 dB, ±0.5 lb, N, and pascals degrees channel • Built-in 4 mA match (full scale) constant current • 90 dB dynamic power supply range (typical) Large 6.9 inch • 130 dB dynamic (17.5 cm) display range with swept- Display area is not sine (option 1D2) compromised by • Up/Down autorange portability • Up only autorange

2 HP-IB Connector Integrate the HP 35670A with Source Types other instruments Low Noise Fan • Random Noise and peripherals for Fan may be turned • Burst Random system operation or off for acoustic DC Power applications. Noise printing/plotting. Accepts 12 to 28 volts • Periodic Chirp System controller Running speed dc (nominal). Use the depends on • Burst Chirp for HP-IB (IEEE- HP 35250A power • Pink Noise 488.1 and 488.2) ambient cable for DC power temperature. • Fixed Sine compatible source connection, or • Arbitrary instrumentation via the HP 35251A power Waveform HP Instrument Serial Port cable with cigarette- Source BASIC (option 1C2). Plot to HP-GL Parallel Port lighter adapter. (Option 1D4) Provides direct plotters or print to Plot to HP-GL plotters • Swept-Sine control of HP-IB HP-GL and raster or print to HP-GL and Source printers, plotters, printers. raster printers. (Option 1D2) and HP SS80 disk drives. Note: The source is located on the front panel of a standard two-channel HP 35670A.

AC Power Universal power supply will operate with any combination of voltage between 100 and 240 VAC and line frequency Tachometer Power Select between 47 and External Trigger (42 Volt Peak Max) Switch between 440 Hz. The (42 Volt Peak Max) No external signal ac and dc power maximum power No external signal conditioning hardware sources without requirement is conditioning required. Reads interrupting 350 VA. hardware required. frequency (RPM) on instrument Triggers on selected selected levels operation. level between between ±20 volts. ±10 volts.

Keyboard External Monitor Use a standard PC Drive a multisync keyboard to title data, monitor for remote edit HP Instrument viewing by large BASIC programs, groups. or to operate the instrument.

3 Spectrum Analysis

FFT-based spectrum analyzers, such Averaging as the HP 35670A, are ideal for Various averaging modes let you measuring the spectra of low- further refine spectrum analysis frequency signals like speech or measurements. Time averaging mechanical vibration. Transient extracts repetitive signals out of the components, usually missed with noise while rms averaging reduces swept-frequency analyzers, are easily the noise to its mean value. Exponen- measured and displayed at speeds tial averaging, available for both time fast enough to follow trends. The and rms averaging, is useful for HP 35670A has both the performance reducing the noise while following and features required to take full changing signals—tracking the advantage of this technology. resonance shifts in a fatiguing structure for example. 16-Bits for High Performance With a 16-bit ADC (90 dB typical dynamic range) and a real-time bandwidth of 25.6 kHz, you can be sure nothing will be missed. Resolve signals using 100 to 1600 lines resolution, or for really close-in analysis, use frequency zoom to resolve signals with up to 61 µHz resolution. Use time or RPM arming to develop waterfalls of sequential vibration spectra for trend analysis or for an overview of device vibration.

Power and Linear Spectrums Match your spectrum measurement mode to the signal being tested. Use linear spectrum analysis to measure both the amplitude and phase of periodic signals such as the spectra of rotating machinery. Power spectrum analysis is provided for averaging nonrepetitive signals.

Two spectrums of road induced vibration measured at different speeds are compared using the front/back mode of the HP 35670A.

4 Time Domain Use your as a low- frequency or view signals in the time and frequency Simultaneous domains simultaneously. (Note: anti- display of alias filters can be switched off.) frequency Special markers for time-domain data and time domain data facilitates facilitate extraction of key control analysis of gear system performance parameters: mesh vibration. overshoot, rise time, setting time, and delay time.

Data Table Use a tabular format to keep track of key frequencies in the spectra of rotating machinery. The amplitude and frequency of the signal and a Markers 16-character entry label field are Markers streamline analysis by listed for each selected point. helping you select and display specific data. Marker functions include marker to peak, next right peak, and coupled Measurement markers for selecting points in results at key frequencies can multiple data displays. Markers be labeled and readouts are absolute or relative to listed using data your selected reference. table. Special Markers Three special marker functions facilitate analysis of your spectral data. Sideband markers aid analysis of modulation signals. Use this function to quickly locate sidebands in the complicated spectra of rotating machines. A band-power marker reads the total power in a selected band of frequencies and a total harmonic Automatic Units Conversion marker lets you calculate total harmonic distortion without Display vibration data in the units including the effects of noise. of your choice. Select g, m/sec2, in/sec2, m/s, in/s, m, mil, inch, Kg, lb, N, dyn, or pascals as appropri- ate for your application. The instru- ment automatically converts fre- quency-domain data from specified input transducer units to the units you select for display. For example, accelerometer data is automatically converted and displayed as mils when Harmonic markers mils are selected. Of course, dB, dBV, are used to calculate the THD dBm and volts are available for of a signal without electrical applications. including the effects of noise.

5 Frequency Response Measurements

The HP 35670A has the flexibility to make measurements of both electrical networks and mechanical devices. FFT-based network analysis Limits are used is fast enough to allow real-time for go/no go adjustments of circuit parameters testing in while the swept-sine option provides production. The response of an exacting measurements over more accelerometer is than six frequency decades, and a being checked in 130 dB dynamic range. this example.

Source Select the optimum stimulus for each application—random noise, periodic chirp, pink noise, fixed sine, burst random, and burst chirp. For zoomed network analysis measurements, the source is band-translated to match the zoom span at frequencies up to 51.2 kHz. An optional arbitrary source lets you test your product using real- world signals. A ±10 volt dc source Limits Four Channels (option AY6) offset facilitates tests of control Test network measurements against Test up to three devices simulta- systems. preset limits. Up to 800 separate line neously with a four-channel segments are available for setting HP 35670A. Channel one is the Impact Testing upper and lower limits. Limits are common reference channel and Force and exponential windows also used for testing spectrum two, three, and four are the response allow impact testing for modal and measurements. channels. Alternatively, select structural analysis. Quality measure- channels one and three as reference ments are ensured using preview and channels for two totally independent accept/reject during averaging. A network measurements. See 4 mA constant current transducer option AY6 description for more power supply is built-in for true information. portability.

Characteristics of a selected resonance are automatically calculated from an impact measurement using the frequency and damping marker.

6 Time Capture

Markers Capture transient events or time A frequency and damping marker histories for complete analysis in any provides the resonant frequency and measurement mode (except swept- the damping ratio of single-degree-of- sine). Use either the entire time- freedom frequency response measure- capture record or a selected region of ments. interest for repetitive analysis in the FFT, octave, order track, correlation Gain and phase margin markers or histogram instrument modes. extract key frequency-domain stability data from frequency- Add an additional 4 Mbytes (option response measurements of AN2) or 8 Mbytes (option UFC) of control systems. memory for really deep time-capture capability. Signal Injection for Control Loops Use one of three HP signal injection devices for testing control loops. The HP 35280A summing junction provides convenient dc to 1 MHz signal injection for most control loops. Use the HP 35281A clip-on transformer when it is not possible to temporarily open the loop, or use the HP 35282A signal injection trans- former when secondary voltages are up to 600 Vpk.

An interval of time-capture data has been selected for analysis in the octave mode.

STARModal and STARAcoustics are products of Structural Measurement Systems. CADA-PC is a product of LMS International. Microsoft® is a U.S. registered trademark of Microsoft Corp. AMI PRO is a product of Lotus Development Corp.

7 Using Measurement Computed Order Tracking Results (Option 1D0)

Taking the measurement is only Self-contained—no ratio techniques require external tracking half the job. Raw measurement data synthesizer or tracking filters and ratio synthesizers. With must be stored, recalled, printed, filter required HP’s computed order tracking plotted, integrated with other data algorithm, external hardware is gone. for analysis, and reported. The Order Maps HP 35670A has a variety of tools to Order Tracking Because order tracking is imple- help you finish the job. RPM or Time Trigger mented in the software, data is more precise and your job is easier. Enhanced Data Transfer Display RPM Profile Compared to traditional analog order Utilities for PCs Track Up to Five tracking techniques, computed order Standard Data Format (SDF) Utili- Orders/Channel tracking offers: ties, provided with the HP 35670A, Up to 200 Orders allow you to easily move data from the •Improved dynamic range at instrument to wherever it’s needed: Composite Power high orders RPM Measurements •More accurate tracking of rapidly • For general digital signal processing changing shaft speeds and filtering , translate data files to •Accurate RPM labeled spectra formats compatible with MATLAB Order tracking facilitates evaluation with exact RPM trigger arm of spectra from rotating machines by •Wide 64:1 ratio of start to stop RPMs and MATRIXX, Data Set 58, or ASCII for use in popular spreadsheets. displaying vibration data as a function • For specific applications, use of orders (or harmonics) rather than Order Map application software that reads SDF frequency. All measurement spectra Use order maps for an overview of files directly, such as STARModal is normalized to the shaft RPM. vibration data versus RPM or time. and STARAcoustics from SMS and Display the amplitude profile of CADA-PC from LMS. Now you can have order tracking individual orders and suborders using • Transfer data to and from the without compromising portability. the slice marker function. Alterna- HP 35665A, 3566A, 3567A, 3562A, Traditional analog order tracking tively, use trace markers to select 3563A. individual traces for display. • Use the viewdata feature to display data on your PC or to convert to the HP-GL format for transfer to Micro- soft’s Word for Windows or Lotus’ AMI PRO word processing software. • Convert between HP-LIF and MS-DOS formats. • Read data files into a program.

Documented Results The HP 35670A supports a variety of HP-IB, serial and parallel printers and plotters for direct hardcopy output. The internal 3.5 inch flexible disk drive stores data, instrument states, HP-GL plots and HP Instrument BASIC programs in HP-LIF or MS-DOS formats for future recall or use on HP workstations or a personal computer. The slice marker feature is used Entire display screens can be to select and imported directly into your word display an order processing program by plotting or suborder from HP-GL files to your named DOS file. an order map. HP-GL files are interpreted and displayed directly by Microsoft’s Word for Windows and AMI PRO from Lotus Development Corp.

8 Order Tracking Measure only the data you need. Order tracking lets you measure the amplitude profile of up to five orders plus composite power simultaneously on each channel. Up to four orders or three orders and composite power can be displayed simultaneously.

Oscilloscope- Orbits quality orbit diagrams mean Obtain oscilloscope-quality orbit you carry only measurements with your HP 35670A. one instrument Unlike traditional FFT analyzers, the onto the shop HP 35670A equipped with computed floor. order tracking displays a selected number of loops (usually one) as the shaft RPM is varied.

Order tracking is used to simultaneously display up to four orders or a combination of orders, 5.32kRPM composite power 5.021kRPM 5.502kRPM and RPM profile.

5.711kRPM

RPM Profile Use RPM profile to monitor the variation of RPM with time during order tracking measurements.

Composite Power Composite power provides the total signal power in a selected channel as Markers are used to a function of RPM. annotate shaft speeds at selected points in a run-up Run-Up and Run-Down measurement. Measurements Run-up and run-down measurements of any order are made using external trigger as the phase reference. Display the results as bode or polar plots; both are available. Markers allow convenient notation of impor- tant shaft speeds.

9 Real-Time Octave Measurements (Option 1D1) Microphone Adapter and Power Supply (Option UK4)

Real-Time Third Octave to 40 kHz This waterfall display of a ANSI S1.11-1986 Filter Shapes flyover test Microphone Inputs and Power can be analyzed trace-by-trace or A-Weighted Overall SPL by selecting time slices along the RPM or Time-Triggered Waterfalls z-axis. Eliminate the expense and inconve- nience of multiple instruments in the field. With optional real-time octave analysis, and the optional microphone adapter and power supply, you have a complete real-time octave analyzer added to your HP35670A at a fraction of the cost of a second instrument. Now you can carry both your FFT and real-time octave analyzers to the Overall sound pressure level and Advanced Analysis job site in the same hand. A-weighted sound pressure level can Use waterfall displays of octave data be displayed with the octave bands for an overview of device noise Real-Time 1/3-Octave to individually, together, or not at all. versus time or RPM. Display indi- 40 kHz on One Channel vidual frequency bands as a function With two input channels of 1/3-octave A fan-off mode lets you use the of RPM or time using the slice marker real-time measurements at frequen- instrument in the sound field being function. Alternatively, use trace cies up to 20 kHz, you get all of the measured. markers to select individual traces for information you’ll ever need to display. understand the noise performance of ANSI S1.11-1986 your product. No misinterpreted All octave filters comply with filter A pink noise source is available for measurements because transient shape standards ANSI S1.11-1986 testing electro-acoustic devices. components were missed. When the (Order 3, type 1-D), DIN 45651, and frequency range requirement is 10 IEC 225-1966. An 80-dB dynamic Sound Level kHz or less, use four channels to range for the audio spectrum pro- Meter Measurements vides the performance required by characterize spatial variations. For Peak hold, impulse, fast, slow, and L those exceptional circumstances, use acousticians. Switchable analog A- eq are all provided with optional Real- 1/3-octave resolution at frequencies weighting filters in the input channels time Octave Measurements. All up to 40 kHz on a single channel. comply fully with both ANSI S1.4- measurements conform to IEC 651- Resolutions of 1/1- and 1/12-octave 1983 and IEC 651-1979 Type 0. 1979 Type 0 - Impulse. are also available.

HP 35670A with option UK4 Real-time microphone 1/3-octave adapter and measurements power supply. at frequencies up to 40 kHz.

10 Swept-Sine Measurements (Option 1D2)

130-dB Dynamic Range Characterize Nonlinear Automatic Frequency Networks Resolution Logarithmic or Linear Sweeps Use the auto-level feature to hold the Use autoresolution to obtain the “Auto” Frequency Resolution input or output amplitude constant fastest sweep possible without during a sweep. This provides the sacrificing accuracy. With While FFT-based network analysis is device response for a specific signal autoresolution, the HP 35670A fast and accurate, swept-sine amplitude. With FFT-based network automatically adjusts the frequency measurements are a better choice analysis using random noise, the step according to the device re- when the device under test has a random amplitudes of the stimulus sponse. High rates of amplitude and wide dynamic range or covers several tend to “average out” the non- phase change are matched with small decades of frequency range. Use linearities and therefore does not frequency steps. Low rate-of-change swept-sine measurements to extend capture the dependency of the regions are quickly measured with the network measurement capabili- response on the stimulus amplitude. larger frequency steps. ties of the HP 35670A. Logarithmic Sweep Test Multiple Devices Simultaneously Network Analysis Over a Test devices over more than six Increase throughput in production. 130-dB Range decades of frequency range using Swept-sine measurements up to With traditional swept-sine, the logarithmic sweep. In this mode, the 25.6 kHz can be made on three HP 35670A is optimally configured to frequency is automatically adjusted to devices simultaneously using swept- measure each individual point in the provide the same resolution over sine on a four-channel HP 35670A. frequency response. The result is a each decade of frequency range. With Channel one is the common reference 130 dB dynamic range. With FFT- FFT-network analysis, resolution is channel for these measurements. based network analysis, all frequency constant—not a problem when measuring over narrow frequency points are stimulated simultaneously Alternatively, channels one and ranges. and the instrument configures itself three can be designated as indepen- to measure the highest amplitude Flexible dent reference channels for two response—thereby limiting the Make the measurement your way. totally independent swept-sine dynamic range. Independently select logarithmic or measurements. linear sweep, sweep up or down, automatic or manual sweep, and autoresolution.

The stability of a control loop is quickly characterized using the gain and phase margin marker function.

11 HP Instrument BASIC (Option 1C2)

Realize the advantages of using your Over 200 HP Instrument BASIC Keystroke Recording instrument with a computer without Commands Most program development begins sacrificing portability. HP Instrument with keystroke recording. Each BASIC provides the power of a Program entry Binary functions keystroke is automatically saved as a computer inside your HP 35670A. and editing program instruction as you set up Trigonometric your measurement using the front Program debugging operations • Create custom interfaces for panel. The recorded sequence can be simplified operation. Memory allocation String operations used as the core of a sophisticated • Use the HP 35670A as a system Relation operators Logical operators program or run as an automatic controller to integrate it with other sequence. instruments and peripherals. General math HP-IB control • Enhance functionality by creating custom measurements. Graphics control Mass storage • Increase productivity with Graphics plotting Event initiated automated operation. branching Graphics axes and labeling Clock and calendar HP Instrument BASIC is a compatible subset of the HP BASIC used in Program control General device I/O HP 9000 series 200, 300, 400 and 700 Array operations computers. Easy Programming The HP Instrument BASIC program editor supports: • Line-by-line syntax checking • Pre-run program verification • Single step and debug Keystroke • Automatic line numbering recording quickly creates An optional PC-style 101-key key- the core of your board facilitates program develop- HP Instrument ment and editing. Simple programs BASIC program. can be entered or edited using the front-panel keys. Large programs can be developed or edited in HP 9000 Series 200, 300, and 400 computers, or on a HP Vectra with Instrument BASIC for Windows, HP E2200A, and then transfered to the HP 35670A.

HP Instrument BASIC can be used to display measurement results in a new format or to create a new operator interface.

12 Add Two Channels Curve Fit and Synthesis (Option AY6) (Option 1D3)

51.2-kHz Frequency Range On 20 Poles/20 Zeros Curve Fitter One and Two Channels Frequency Response Synthesis 25.6-kHz Frequency Range On Pole/Zero, Pole/Residue and Four Channels Polynomial Format One or Two Reference Channels Use curve fit and synthesis in the Enhance your productivity by adding HP 35670A to take the guesswork out two additional input channels to your of your design process. The 20-pole portable analyzer. Having four and 20-zero multiple-degree-of- channels often means the difference freedom curve fitter calculates a between solving a problem in the mathematical model of your system field and having to schedule time in or circuit from measured frequency a test bay. response data. The model can be expressed in pole/zero, pole/residue, Monitor four signals simultaneously or polynomial format. or use channel one as the reference channel for up to three simultaneous cross-channel measurements. Two totally independent cross-channel measurements are made by selecting channels one and three as indepen- dent reference channels. All channels are sampled simultaneously.

Use triaxial measurements to simulta- neously characterize the motion of mechanical devices in three axes.

For control systems, simultaneously measure several points in a single loop.

Curve fit provides an exact mathematical model of your circuit or device.

Transfer the circuit model to the synthesis function to experiment with design modifications. Add and delete poles and zeros, change gain factors, time delays, or frequency scaling, then synthesize the frequency response from the modified model. Design modifications are tested without ever touching a soldering iron.

13 Arbitrary Waveform Add 8-Mbytes RAM Source (Option UFC) (Option 1D4) Add 4-Mbytes RAM (Option AN2)

Frequency or Time Domain Entry Expand the data storage and time- capture capacity of your HP 35670A. Data Edit Store Up to Eight Arbitrary Number of Spectra Stored Per Channel Waveforms Standard Add 4 Mbyte Add 8 Mbyte FFT - 1 Channel 1 130 600 1000 Test your products using real-world 2 signals. Measure a signal in either the FFT- 2 Channels 50 250 400 time or frequency domain, then FFT - 4 Channels 3 20 100 200 output it via the arbitrary waveform 1/3-Octave Spectra 4 4000 18800 32000 source. Use math functions and data Time Capture 1 550 KSamples 2.6 MSamples 4.7 MSamples edit to obtain precisely the output waveform you need. An arbitrary 1 Conditions: Preset with instrument mode switched waveform may be output once or to 1 channel. repeatedly. 2 Conditions: Preset 3 Conditions: Preset with instrument mode switched Add 1-Mbyte Nonvolatile Standard source types can be to 4 channels. 4 Conditions: Preset with instrument mode switched RAM optimized for specific applications. to octave. (Option UFF) For example, random noise can be shaped to improve the effective Use the 1-Mbyte nonvolatile RAM in dynamic range of your measurement. environments too harsh for the 3.5 Alternatively, you can use data edit inch flexible disk drive. The memory and math functions to create an functions as a high-speed disk for arbitrary waveform. storage of the following information.

Use time capture as a digital tape •Instrument Setup States recorder, then playback captured •Trace Data signals through the arbitrary wave- •User Math Definitions form source. •Limit Data •Time Capture Buffers •HP Instrument BASIC Programs •Waterfall Display Data •Curve Fit/Synthesis Tables •Data Tables

Information stored in nonvolatile RAM is retained when the power is off.

Math functions are used to optimize a burst chirp signal for a frequency response measurement.

14 HP 35670A Ordering Information

HP 35670A Options for the HP 35670A Accessories Dynamic Signal Analyzer Opt. Description Standard Configuration: AY6 Add Two Channels (four total) DC Power Cables The HP 35250A is a three meter cable •1.4 Mbyte, 3.5-in. flexible disk drive 1D0 Computed Order Tracking 1D1 Real-Time Octave terminated with lugs for connecting •1.5 Mbytes user RAM Measurements to most dc power sources. The •Impact Cover UK4 Microphone Adapter and Power HP 35251A is a three meter cable terminated with an adaptor that plugs •Standard Data Format Utilities Supply 1D2 Swept-Sine Measurements into a cigarette lighter. •AC Power Cord 1D3 Curve Fit and Synthesis •Operating manual set including: 1D4 Arbitrary Waveform Source For Testing Control Systems The HP 35280A summing junction Operator’s Guide 1C2 HP Instrument BASIC AN2 Add 4-Mbytes Memory provides convenient dc to 1 MHz Quick Start Guide signal injection for most control Installation and Verification Guide UFC Add 8-Mbytes Memory Note: Only one of option AN2 or loops. Use the HP 35281A clip-on HP-IB Programming with the transformer when it is not possible to HP35670A UFC may be installed UFF Add 1-Mbyte Nonvolatile RAM temporarily open the loop, or use the HP-IB Commands:Quick Reference HP 35282A signal injection trans- HP-IB Programmer’s Guide 1F0 PC-style Keyboard 1F1 German Keyboard former when secondary voltages are •Standard one-year warranty 1F2 Spanish Keyboard up to 600 Vpk. 1F3 French Keyboard 1F4 UK Keyboards 1F5 Italian Keyboard 1F6 Swedish Keyboard AX4 Rack Mount Without Handles 100 Software Bundle 1D0-1D4, UFC UK5 Carrying Case (for shipping) 0B1 Additional Manual Set 0BU Additional HP Instrument BASIC Manual Set 0B3 Add Service Manual 1BP Military Calibration (meets MIL 45662A) W30 Two Year Extended Service Physical Sensors Contract For a complete list of accessories for this and other HP Dynamic Signal To Upgrade Your HP 35670A Analyzers, please refer to the HP DSA Accessory Catalog To add an option to your HP 35670A, (publication number 5091-9708E). order HP 35670U followed by the option number. Options AY6, AN2, UFC and UFF must be installed by Hewlett Packard. Option UE2 is available to upgrade instrument firmware to latest version, as appropriate.

15 Summary of Features on Standard Instrument

The following features are standard with the HP 35670A:

Instrument Modes Signal Averaging (FFT Mode) Analysis FFT Analysis Histogram/Time Average Types (1 to 9,999,999 avgerages) Limit Test with Pass/Fail Correlation Analysis Time Capture RMS Time Exponential Data Table with Tabular Readout RMS Exponential Peak Hold Data Editing Measurement Time Frequency Domain Time Capture Functions Frequency Response Power Spectrum Averaging Controls Capture transient events for repeated analysis Linear Spectrum Coherence Overload Reject in FFT, octave, order, histogram, or correlation Cross Spectrum Power Spectral Fast Averaging On/Off modes (except swept-sine). Time-captured Density Update Rate Select data may be saved to internal or external disk, or transferred over HP-IB. Zoom on captured Time Domain (oscilloscope mode) Select Overlap Process Percentage Preview Time Record data for detailed narrowband analysis. Up to Time Waveform Autocorrelation 750K samples of data can be saved in the Cross-Correlation Orbit Diagram Measurement Control standard unit. Amplitude Domain Start Measurement Pause/Continue Measurement Data Storage Functions Histogram, PDF, CDF Built-in 3.5 in., 1.44-Mbyte flexible disk also Trace Coordinates Triggering supports 720-KByte disks, and 128-Kbyte Linear Magnitude Unwrapped Phase Continuous (Freerun) NVRAM disk. Both MS-DOS® and HP-LIF External (Analog or TTL Level) Log Magnitude Real Part formats are available. Data can be formatted as dB Magnitude Imaginary Part Internal Trigger from any Channel either ASCII or Binary (SDF). The HP 35670A Group Delay Nyquist Diagram Source Synchronized Trigger provides storage and recall from the internal Phase Polar HP-IB Trigger disk, internal RAM disk, internal NVRAM disk, or Armed Triggers external HP-IB disk for any of the following Trace Units Automatic/Manual information: Y-axis Amplitude: combinations of units, unit RPM Step value, calculated value, and unit format Time Step Instrument Setup States Trace Data describe y-axis amplitude Pre- and Post-Trigger Measurement Delay User-Math Limit Data 2 2 Time Capture Buffers HP Instrument BASIC Units: volts, g, meters/sec , inches/sec , Tachometer Input: Waterfall Display Data Programs meters/sec, inches/sec, meters, mils, inches, ±4 V or ±20 V range Data Tables Curve Fit/Synthesis pascals, Kg, N, dyn, lb, user-defined EUs 40 mv or 200 mV resolution Tables Up to 2048 pulses/rev Unit Value: rms, peak, peak-to-peak Interfaces — Tach hold-off control Calculated Value: V, V2, V2/Hz, V/√ Hz, V2s/Hz HP-IB (IEEE-488.1 and 488.2) (ESD) Source Outputs Parallel Random Burst Random RS-232C Serial Unit Format: linear, dB’s with user selectable Periodic Chirp Burst Chirp dB reference, dBm with user selectable Pink Noise Fixed Sine Hard-Copy Output impedance. Note: Some source types are not available for To Serial or Parallel HP-GL Plotters To Raster Printers Y-Axis Phase: degrees, radians use in optional modes. See option description for details. To Serial or Parallel HP-GL Printers X-Axis: hz, cpm, order, seconds, user-defined To Disk File (Supports Raster Printer, Input Channels HP-GL Plotter, and HP-GL Printer) Display Formats Manual Range Anti-alias Filters On/Off Time Stamp Single Up-Only Auto Range AC or DC Coupling Quad Up/Down Auto Range LED Half Range and HP-IB Capabilities Dual Upper/Lower Traces Overload Indicators Listener/Talker (Direct control of plotters, Small Upper and Large Lower Floating or Grounded A-Weight Filters On/Off printers, disk drives) Front/Back Overlay Traces Transducer Power Supplies Conforms to IEEE 488.1/488.2 Measurement State (4 ma constant current) Conforms to SCPI 1992 Bode Diagram Controller with HP Instrument Basic option Frequency Waterfall Display with Skew, -45 to 45 Degrees Standard Data Format (SDF) Utilities Trace Grids On/Off 20 Spans from 195 mHz to 102.4 kHz (1 channel mode) Exchange data between virtually all Display Blanking HP Dynamic Signal Analyzers Screen Saver 20 Spans from 98 mHz to 51.2 kHz (2 channel mode) Easy data transfer to spreadsheets Display Scaling Digital zoom with 244 µHz resolution throughout Data transfer to MATRIXX and Matlab Autoscale Selectable Reference the 102.4 kHz frequency bands. SDF utilities run in an external PC Manual Scale Linear or Log X-Axis Input Range Tracking Y-Axis Log Resolution Calibration & Memory X & Y Scale Markers with Expand and Scroll 100, 200, 400, 800 and 1600 lines Single or Automatic Calibration Built-In Diagnostics & Service Tests Marker Functions Windows Hann Uniform Nonvolatile Clock with Time/Date Individual Trace Markers Time/Date Stamp on Plots and Saved Data Files Coupled Multi-Trace Markers Flat Top Force/Exponential Absolute or Relative Marker Math Online Help Peak Search +,-,∗, / Conjugate Access to Topics via Keyboard or Index Harmonic Markers Magnitude Real and Imaginary -1 Fan Band Marker Square Root FFT, FFT On/Off Sideband Power Markers LN EXP Waterfall Markers ∗jω or /jω PSD Time Parameter Markers Differentiation A, B, and C weighting Frequency Response Markers Integration Constants K1thru K5 Functions F1 thru F5

MS-DOS® is a U.S. registered trademark of Microsoft Corporation. Data subject to change. MATRIX X is a product of Integrated Systems Inc. Matlab is a product of The Math Works. Copyright © 1994, 1997 Hewlett-Packard Co. Printed in U.S.A. 12/97 5966-3063E