Agilent 35670A

Dynamic Signal Analyzer

Product Overview

The Agilent 35670A is a portable two- or four-channel dynamic signalanalyzer with the versatility to be several instruments at once. Ruggedand portable, it’s ideal for field work.Yet it has the performance and func-tionality required for demanding R&D applications. Optional featuresoptimize the instrument for trouble-shooting mechanical vibration andnoise problems, characterizing control systems, or general spectrumand network analysis.

Take the Agilent 35670A where it’s needed!

Whether you’re moving an instrumentaround the world or around the lab,portability is a real benefit. Smallenough to fit under an airplane seat,the 35670A goes where it’s needed.But there’s more to portability thansize. Like a nominal 12- to 28-volt dc

power input and self-contained features that do not require externalhardware, such as built-in piezoelec-tric integrated circuit power supply,analog trigger and tachometer inputs,and optional computed order tracking.

Versatile enough to be your only instrument for low frequency analysis

With the 35670A, you carry severalinstruments into the field in onepackage. Frequency, time, and ampli-tude domain analysis are all availablein the standard instrument. Build on that capability with options thateither add new measurement capabil-ity or enhance all measurementmodes.

Versatile two- or four-channel high-performance FFT-based spectrum/network analyzer

122 µHz to 102.4 kHz 16-bit ADC

Key Specifications

Frequency Range: 102.4 kHz 1 channel51.2 kHz 2 channel25.6 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 Agilent 35670Ashown with four channels (option AY6)

AY6 Add Two Channels (Four Total)1D0 Computed Order Tracking1D1 Real-Time Octave

MeasurementsUK4 Microphone Adapter and

Power Supply1D2 Swept-Sine Measurements1D3 Curve Fit and Synthesis1D4 Arbitrary Waveform Source1C2 Agilent Instrument BASICUFF Add 1 Mbyte NVRAMAN2 Add 4 Mbyte RAM

(8 Mbytes Total)UFC Add 8 Mbyte RAM

(12 Mbytes Total)100 1D0 - 1D4/UFC bundle

nancyTest Equipmet Depot99 Washington StreetMelrose, MA 02176-6024TEL: 800.517.8431FAX: 781.665.0780

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Agilent 35670A Dynamic Signal Analyzer

Shown with option AY6 - Add Two Channels

Input Channels• Analog A-weighted

filters (switchable)• Transducer sensitivity

input• Engineering units:

g, m/s2, m/s, m, in/s2, in/s, in, mil, kg, dyn,lb, N, and pascals

• Built-in 4 mA constant currentpower supply

Large 6.9 inch (17.5 cm) displayDisplay area is notcompromised byportability

Precision Measurements

• 16-bit ADC• ±0.15 dB spectrum

ampltude accuracy • ±0.04 dB, ±0.5

degrees channelmatch (full scale)

• 90 dB dynamicrange (typical)

• 130 dB dynamicrange with swept-sine (option 1D2)

• Up/Down autorange• Up only autorange

Math FunctionsPowerful math anddata editing functionsto quickly modifymeasurement results.(Curve fit and freq-uency response synthesis availablewith option 1D3.)

Built-In 3.5 inch Flexible Disk DriveStore instrumentstates, programs, timecaptured data, water-fall data, trace data,limits, math functions,data tables, and curvefit/synthesis tables.Supported disk formatsare HP-LIF and MS-DOS. InternalRAM may also be formatted as storagedisk.

Powerful MarkersExtract informationfrom measurementdata with trace andspecial markers:

• Individual Trace • Coupled Trace • Absolute or Relative • Peak Search• Harmonic • Band • Sideband Power • Waterfall • Time Parameter • Frequency and

Damping

Versatile Measurement ModesStandard and optional measurement modes include:

• FFT Analysis• Real-Time Octave Analysis

(option 1D1)• Order Analysis (option 1D0)• Swept-Sine (option 1D2)• Correlation Analysis• Histogram Analysis• Time Capture

All measurement options may be retrofitted.

RPM DisplayRead RPM in anymeasurement mode

Agilent Instrument BASIC (Option 1C2)Develop a custom user-interface, integrate several instruments andperipherals into a systemusing the 35670A asthe system controller, or simply automate measurements.

Online HelpApplications oriented help is just a few keystrokes away.

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Source Types• Random Noise• Burst Random

Noise• Periodic Chirp• Burst Chirp• Pink Noise• Fixed Sine• Arbitrary

WaveformSource (Option 1D4)

• Swept-SineSource (Option 1D2)Note: Thesource islocated on the front panelof a standardtwo-channel 35670A.

GPIB ConnectorIntegrate the 35670A with otherinstruments andperipherals for system operationor printing/plotting.System controllerfor GPIB (IEEE-488.1and 488.2) compati-ble instrumentationvia AgilentInstrument BASIC(option 1C2).Provides directcontrol of GPIBprinters, plotters, and HP SS80 diskdrives.

Serial PortPlot to HP-GL plotters or print toHP-GL and rasterprinters.

Parallel PortPlot to HP-GL plotters or print to HP-GL andraster printers.

DC PowerAccepts 12 to 28 voltsdc (nominal). Use the35250A power cablefor DC power sourceconnection, or the35251A power cablewith cigarett-lighteradapter.

Low Noise FanFan may be turned off for acoustic applications. Running speeddepends on ambient temperature.

External MonitorDrive a multisyncmonitor for remoteviewing by largegroups.

Tachometer(42 Volt Peak Max)No external signal conditioning hardwarerequired. Reads frequency (RPM) onselected levelsbetween ±20 volts.

External Trigger(42 Volt Peak Max)No external signalconditioning hard-ware required.Triggers on selectedlevel between ±10 volts.

KeyboardUse a standard PC keyboard to title data,edit Agilent InstrumentBASIC programs, or to operate the instrument.

Power SelectSwitch betweenac and dc powersources withoutinterruptinginstrument operation.

AC PowerUniversal powersupply will oper-ate with any combination ofvoltage between100 and 240 VACand line frequencybetween 47 and 440 Hz. The maximum powerrequirement is 350 VA.

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Laboratory-quality measurements in the field

Obtain all of the performance of yourbench-top analyzer in a portableinstrument.

Ease-of-use

Portability, versatility, and perfor-mance are valued attributes, but to bereally valuable an instrument mustalso be easy to use. The 35670A has a friendly front panel, plus onlinehelp that’s always available to answeryour questions. An interactive mea-surement state lets you configure the instrument setup from a singledisplay.

Two spectrums of roadinduced vibration meas-ured at different speedsare compared using thefront/back mode of the Agilent 35670A.

FT-based spectrum analyzers, such asthe 35670A, are ideal for measuringthe spectra of low-frequency signalslike speech or mechanical vibration.Transient components, usually missedwith swept-frequency analyzers, areeasily measured and displayed atspeeds fast enough to follow trends.The 35670A has both the performanceand features required to take full advantage of this technology.

16-Bits for High Performance

With a 16-bit ADC (90 dB typicaldynamic range) and a real-time bandwidth of 25.6 kHz, you can besure nothing will be missed. Resolvesignals using 100 to 1600 lines resolu-tion, or for really close-in analysis,use frequency zoom to resolve signalswith up to 61 µHz resolution. Usetime or RPM arming to developwaterfalls of sequential vibrationspectra for trend analysis or for anoverview of device vibration.

Power and Linear Spectrums

Match your spectrum measurementmode to the signal being tested. Use linear spectrum analysis to measure both the amplitude andphase of periodic signals such as thespectra of rotating machinery. Powerspectrum analysis is provided foraveraging nonrepetitive signals.

Averaging

Various averaging modes let you fur-ther refine spectrum analysis meas-urements. Time averaging extractsrepetitive signals out of the noisewhile rms averaging reduces thenoise to its mean value. Exponentialaveraging, available for both time andrms averaging, is useful for reducingthe noise while following changingsignals—tracking the resonance shiftsin a fatiguing structure for example.

Spectrum Analysis

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Time Domain

Use your spectrum analyzer as a low-frequency oscilloscope or viewsignals in the time and frequencydomains simultaneously. (Note: anti-alias filters can be switched off.)Special markers for time-domain datafacilitate extraction of key controlsystem performance parameters:overshoot, rise time, setting time, and delay time.

Data Table

Use a tabular format to keep track of key frequencies in the spectra ofrotating machinery. The amplitudeand frequency of the signal and a 16-character entry label field are listed for each selected point.

Automatic Units Conversion

Display vibration data in the units of your choice. Select g, m/sec2, in/sec2, m/s, in/s, m, mil, inch, Kg, lb, N, dyn, or pascals as appro-priate for your application. The instrument automatically convertsfrequency-domain data from specifiedinput transducer units to the unitsyou select for display. For example,accelerometer data is automaticallyconverted and displayed as mils when mils are selected. Of course,dB, dBV, dBm and volts are availablefor electrical applications.

Markers

Markers streamline analysis by helping you select and display specif-ic data. Marker functions includemarker to peak, next right peak, andcoupled markers for selecting pointsin multiple data displays. Markersreadouts are absolute or relative toyour selected reference.

Special Markers

Three special marker functions facilitate analysis of your spectraldata. Sideband markers aid analysis of modulation signals. Use this func-tion to quickly locate sidebands in the complicated spectra of rotatingmachines. A band-power markerreads the total power in a selectedband of frequencies and a total har-monic distortion marker lets you calculate total harmonic distortionwithout including the effects of noise.

Measurementresults at key frequencies can be labeled and listed using datatable.

Harmonic markers are used to calculatethe THD of a signalwithout including theeffects of noise.

Simultaneous dis-play of frequency and time domaindata facilitatesanalysis of gearmesh vibration.

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The 35670A has the flexibility to make measurements of both electrical networks and mechanicaldevices. FFT-based network analysisis fast enough to allow real-time ad-justments of circuit parameters whilethe swept-sine option provides exact-ing measurements over more than sixfrequency decades, and a 130 dBdynamic range.

Source

Select the optimum stimulus for eachapplication—random noise, periodicchirp, pink noise, fixed sine, burstrandom, and burst chirp. For zoomednetwork analysis measurements, thesource is band-translated to matchthe zoom span at frequencies up to51.2 kHz. An optional arbitrary sourcelets you test your product using real-world signals. A ±10 volt dcsource offset facilitates tests of control systems.

Impact Testing

Force and exponential windowsallow impact testing for modal andstructural analysis. Quality measure-ments are ensured using preview andaccept/reject during averaging. A 4 mA constant current transducerpower supply is built-in for true portability.

Frequency Response Measurements

Limits are used for go/no go testing in production. Theresponse of anaccelerometer is being checked in this example.

Characteristics of aselected resonance are automatically calculated from animpact measurementusing the frequency and damping marker.

Limits

Test network measurements againstpreset limits. Up to 800 separate linesegments are available for settingupper and lower limits. Limits arealso used for testing spectrum measurements.

Four Channels (option AY6)

Test up to three devices simul-taneously with a four-channel 35670A.Channel one is the common referencechannel and two, three, and four arethe response channels. Alternatively,select channels one and three as ref-erence channels for two totally inde-pendent network measurements. See option AY6 description for moreinformation.

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Markers

A frequency and damping marker provides the resonant frequency andthe damping ratio of single-degree-of-freedom frequency response measurements.

Gain and phase margin markersextract key frequency-domain stabili-ty data from frequency response measurements of control systems.

Signal Injection for Control Loops

Use one of three Agilent signal injection devices for testing controlloops. The 35280A summing junctionprovides convenient dc to 1 MHz sig-nal injection for most control loops.Use the 35281A clip-on transformerwhen it is not possible to temporarilyopen the loop, or use the 35282A signal injection transformer whensecondary voltages are up to 600 Vpk.

Capture transient events or time histories for complete analysis in anymeasurement mode (except swept-sine). Use either the entire time-capture record or a selected region ofinterest for repetitive analysis in theFFT, octave, order track, correlationor histogram instrument modes.

Add an additional 4 Mbytes (optionAN2) or 8 Mbytes (option UFC) ofmemory for really deep time-capturecapability.

Time Capture

An interval of time-capture data has been selected foranalysis in the octavemode.

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Taking the measurement is only half the job. Raw measurement datamust be stored, recalled, printed,plotted, integrated with other data for analysis, and reported. The 35670A has a variety of tools to help you finish the job.

Enhanced Data Transfer Utilities for PCs

Standard Data Format (SDF) Utilities,provided with the 35670A, allow you to easily move data from theinstrument to wherever it’s needed:

Using MeasurementResults

Self-contained—no ratio synthe-sizer or tracking filter required

Order Maps

Order Tracking

RPM or Time Trigger

Display RPM Profile

Track Up to Five Orders/Channel

Up to 200 Orders

Composite Power

RPM Measurements

Order tracking facilitates evaluation of spectra from rotating machines bydisplaying vibration data as a func-tion of orders (or harmonics) ratherthan frequency. All measurementspectra is normalized to the shaftRPM.

Now you can have order trackingwithout compromising portability.Traditional analog order trackingtechniques require external trackingfilters and ratio synthesizers. WithAgilent’s computed order tracking algorithm, external hardware is gone.

Because order tracking is implement-ed in the software, data is more precise and your job is easier. Compared to traditional analog order tracking techniques, computedorder tracking offers:

Computed Order Tracking(Option 1D0)

The slice marker feature is used to select and display an order or suborderfrom an order map.

● For general digital signal processingand filtering , translate data files toformats compatible with MATLABand MATRIXX, Data Set 58, or ASCIIfor use in popular spreadsheets.

● For specific applications, use application software that reads SDFfiles directly, such as STARModal and STARAcoustics from SMS andCADA-PC from LMS.

● Transfer data to and from the 35665A, 3566A, 3567A, 3562A, 3563A.

● Use the viewdata feature to displaydata on your PC or to convert to theHP-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 35670A supports a variety of GPIB, serial and parallel printers andplotters for direct hardcopy output.The internal 3.5 inch flexible diskdrive stores data, instrument states,HP-GL plots and Agilent InstrumentBASIC programs in HP-LIF or MS-DOS formats for future recall or use on HP workstations or a personal computer.

Entire display screens can be import-ed directly into your word processingprogram by plotting HP-GL files toyour named DOS file. HP-GL files areinterpreted and displayed directly byMicrosoft’s Word for Windows andAMI PRO from Lotus DevelopmentCorp.

● Improved dynamic range at high orders

● More accurate tracking of rapidlychanging shaft speeds

● Accurate RPM labeled spectra with exact RPM trigger arm

● Wide 64:1 ratio of start to stop RPMs

Order Map

Use order maps for an overview ofvibration data versus RPM or time.Display the amplitude profile of indi-vidual orders and suborders using theslice marker function. Alternatively,use trace markers to select individualtraces for display.

MS-DOS and Microsoft are U.S. registered trademarks of Microsoft Corp.

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Order Tracking

Measure only the data you need.Order tracking lets you measure theamplitude profile of up to five ordersplus composite power simultaneouslyon each channel. Up to four ordersor three orders and composite powercan be displayed simultaneously.

RPM Profile

Use RPM profile to monitor the variation of RPM with time duringorder tracking measurements.

Composite Power

Composite power provides the totalsignal power in a selected channel asa function of RPM.

Run-Up and Run-Down Measurements

Run-up and run-down measurementsof any order are made using externaltrigger as the phase reference.Display the results as bode or polar plots; both are available.Markers allow convenient notation of important shaft speeds.

Orbits

Obtain oscilloscope-quality orbitmeasurements with your 35670A.Unlike traditional FFT analyzers, the35670A equipped with computedorder tracking displays a selectednumber of loops (usually one) as theshaft RPM is varied.

Order tracking is used to simultaneously displayup to four orders or a combination of orders,composite power and RPM profile.

Markers are used toannotate shaft speedsat selected points in arun-up measurement.

Oscilloscope-quality orbit diagrams mean you carry only one instrumentonto the shop floor.

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Real-Time Third Octave to 40 kHz

ANSI S1.11-1986 Filter Shapes

Microphone Inputs and Power

A-Weighted Overall SPL

RPM or Time-Triggered Waterfalls

Eliminate the expense and inconve-nience of multiple instruments in the field. With optional real-timeoctave analysis, and the optional mi-crophone adapter and power supply,you have a complete real-time octaveanalyzer added to your 35670A at afraction of the cost of a secondinstrument. Now you can carry bothyour FFT and real-time octave analyz-ers to the job site in the same hand.

Real-Time 1/3-Octave to 40 kHz on One Channel

With two input channels of 1/3-octavereal-time measurements at frequen-cies up to 20 kHz, you get all of theinformation you’ll ever need to under-stand the noise performance of yourproduct. No misinterpreted measure-ments because transient componentswere missed. When the frequencyrange requirement is 10 kHz or less,use four channels to characterize spa-tial variations. For those exceptionalcircumstances, use 1/3-octave resolu-tion at frequencies up to 40 kHz on asingle channel. Resolutions of 1/1-and 1/12-octave are also available.

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

Overall sound pressure level and A-weighted sound pressure level can be displayed with the octave bandsindividually, together, or not at all.

A fan-off mode lets you use the instrument in the sound field beingmeasured.

ANSI S1.11-1986

All octave filters comply with filtershape standards ANSI S1.11-1986(Order 3, type 1-D), DIN 45651, andIEC 225-1966. An 80 dB dynamicrange for the audio spectrum pro-vides the performance required by acousticians. Switchable analog A-weighting filters in the input chan-nels comply fully with both ANSIS1.4-1983 and IEC 651-1979 Type 0.

Advanced Analysis

Use waterfall displays of octave datafor an overview of device noise ver-sus time or RPM. Display individualfrequency bands as a function of RPMor time using the slice marker func-tion. Alternatively, use trace markersto select individual traces for display.

A pink noise source is available fortesting electro-acoustic devices.

Sound Level Meter Measurements

Peak hold, impulse, fast, slow, andLeq are all provided with optionalReal-time Octave Measurements. All measurements conform to IEC 651-1979 Type 0 - Impulse.

Real-time 1/3-octave measurements at frequencies up to 40 kHz.

This waterfall display of a flyovertest can be analyzed trace-by-trace or byselecting timeslices along the z-axis.

Agilent 35670A with option UK4 microphone adapter and power supply.

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130 dB Dynamic Range

Logarithmic or Linear Sweeps

“Auto” Frequency Resolution

While FFT-based network analysis isfast and accurate, swept-sine mea-surements are a better choice whenthe device under test has a widedynamic range or covers severaldecades of frequency range. Useswept-sine measurements to extendthe network measurement capabili-ties of the 35670A.

Network Analysis Over a 130 dB Range

With traditional swept-sine, the 35670A is optimally configured tomeasure each individual point in thefrequency response. The result is a130 dB dynamic range. With FFT-based network analysis, all frequencypoints are stimulated simultaneouslyand the instrument configures itself to measure the highest amplituderesponse—thereby limiting thedynamic range.

Characterize Nonlinear Networks

Use the auto-level feature to hold theinput or output amplitude constantduring a sweep. This provides thedevice response for a specific signalamplitude. With FFT-based networkanalysis using random noise, the ran-dom amplitudes of the stimulus tendto “average out” the non-linearitiesand therefore does not capture thedependency of the response on thestimulus amplitude.

Logarithmic Sweep

Test devices over more than sixdecades of frequency range using logarithmic sweep. In this mode, thefrequency is automatically adjusted to provide the same resolution overeach decade of frequency range.With FFT-network analysis, resolu-tion is constant—not a problem whenmeasuring over narrow frequencyranges.

Flexible

Make the measurement your way.Independently select logarithmic orlinear sweep, sweep up or down,automatic or manual sweep, andautoresolution.

Automatic Frequency Resolution

Use autoresolution to obtain thefastest sweep possible without sacri-ficing accuracy. With autoresolution,the 35670A automatically adjusts thefrequency step according to thedevice response. High rates of ampli-tude and phase change are matchedwith small frequency steps. Low rate-of-change regions are quicklymeasured with larger frequency steps.

Test Multiple Devices Simultaneously

Increase throughput in production.Swept-sine measurements up to 25.6 kHz can be made on threedevices simultaneously using swept-sine on a four-channel 35670A.Channel one is the common referencechannel for these measurements.

Alternatively, channels one and three can be designated as indepen-dent reference channels for two totally independent swept-sine measurements.

Swept-Sine Measurements (Option 1D2)

The stability of acontrol loop isquickly character-ized using the gainand phase marginmarker function.

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Agilent Instrument BASIC (Option 1C2)

Realize the advantages of using yourinstrument with a computer withoutsacrificing portability. AgilentInstrument BASIC provides thepower of a computer inside your35670A.

Keystroke Recording

Most program development beginswith keystroke recording. Each keystroke is automatically saved as aprogram instruction as you set upyour measurement using the frontpanel. The recorded sequence can beused as the core of a sophisticatedprogram or run as an automaticsequence.

Program entry and editing

Program debugging

Memory allocation

Relation operators

General math

Graphics control

Graphics plotting

Graphics axes and labeling

Program control

Binary functions

Trigonometric operations

String operations

Logical operators

GPIB control

Mass storage

Event initiatedbranching

Clock and calendar

General device I/O

Array operations

Over 200 Agilent Instrument BASIC Commands

Keystroke recording quickly creates the core of your Agilent Instrument BASIC program.

Agilent InstrumentBASIC can be used to display measurement resultsin a new format or to create a new operator interface.

● Create custom interfaces for simplified operation.

● Use the 35670A as a system controller to integrate it with other instruments and peripherals.

● Enhance functionality by creatingcustom measurements.

● Increase productivity with automated operation.

Agilent Instrument BASIC is a compatible subset of the AgilentBASIC used in HP 9000 series 200,300, 400 and 700 computers.

Easy Programming

The Agilent Instrument BASIC program editor supports:

● Line-by-line syntax checking● Pre-run program verification● Single step and debug● Automatic line numbering

An optional PC-style 101-key key-board facilitates program develop-ment and editing. Simple programscan be entered or edited using thefront-panel keys. Large programs canbe developed or edited in HP 9000Series 200, 300, and 400 computers,or on a HP Vectra with InstrumentBASIC for Windows, E2200A, andthen transfered to the 35670A.

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Add Two Channels(Option AY6)

Curve Fit and Synthesis (Option 1D3)

51.2 kHz Frequency Range On One and Two Channels

25.6 kHz Frequency Range OnFour Channels

One or Two Reference Channels

Enhance your productivity by addingtwo additional input channels to your portable analyzer. Having fourchannels often means the differencebetween solving a problem in the field and having to schedule time in a test bay.

Monitor four signals simultaneouslyor use channel one as the referencechannel for up to three simultaneouscross-channel measurements. Twototally independent cross-channelmeasurements are made by selectingchannels one and three as indepen-dent reference channels. All channelsare sampled simultaneously.

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

For control systems, simultaneouslymeasure several points in a singleloop.

20 Poles/20 Zeros Curve Fitter

Frequency Response Synthesis

Pole/Zero, Pole/Residue andPolynomial Format

Use curve fit and synthesis in the 35670A to take the guesswork out ofyour design process. The 20-pole and20-zero multiple-degree-of-freedomcurve fitter calculates a mathematicalmodel of your system or circuit frommeasured frequency response data.The model can be expressed inpole/zero, pole/residue, or polynomialformat.

Curve fit provides anexact mathematicalmodel of your circuit or device.

Transfer the circuit model to the synthesis function to experiment withdesign modifications. Add and deletepoles and zeros, change gain factors,time delays, or frequency scaling,then synthesize the frequencyresponse from the modified model.Design modifications are tested with-out ever touching a soldering iron.

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Add 8 Mbytes RAM (Option UFC)Add 4 Mbytes RAM (Option AN2)

Arbitrary WaveformSource (Option 1D4)

Expand the data storage andtime-capture capacity of your35670A.

Frequency or Time Domain Entry

Data Edit

Store Up to Eight Arbitrary Waveforms

Test your products using real-worldsignals. Measure a signal in either the time or frequency domain, thenoutput it via the arbitrary waveformsource. Use math functions and dataedit to obtain precisely the outputwaveform you need. An arbitrarywaveform may be output once or repeatedly.

Standard source types can be optimized for specific applications.For example, random noise can beshaped to improve the effectivedynamic range of your measurement.Alternatively, you can use data editand math functions to create an arbitrary waveform.

Use time capture as a digital taperecorder, then playback captured signals through the arbitrary waveform source.

Math functions areused to optimize aburst chirp signal for a frequency responsemeasurement.

Expand the data storage and time-capture capacity of your 35670A.

Number of Spectra Stored Per Channel

Standard Add 4 Mbyte Add 8 Mbyte

FFT - 1 Channel 1 130 600 1000

FFT- 2 Channels 2 50 250 400

FFT - 4 Channels 3 20 100 200

1/3-Octave Spectra 4 4000 18800 32000

Time Capture 1 550 KSamples 2.6 MSamples 4.7 MSamples

Add 1 MbyteNonvolatile RAM(Option UFF)Use the 1 Mbyte nonvolatile RAM inenvironments too harsh for the 3.5inch flexible disk drive. The memoryfunctions as a high-speed disk forstorage of the following information.

● Instrument Setup States● Trace Data● User Math Definitions● Limit Data● Time Capture Buffers● Agilent Instrument BASIC Programs● Waterfall Display Data● Curve Fit/Synthesis Tables● Data Tables

Information stored in nonvolatileRAM is retained when the power is off.

1 Conditions: Preset with instrument mode switched to 1 channel.

2 Conditions: Preset3 Conditions: Preset with instrument mode

switched to 4 channels.4 Conditions: Preset with instrument mode

switched to octave.

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Agilent 35670A Ordering Information

Agilent 35670A Dynamic Signal Analyzer Standard Configuration:

• 1.4 Mbyte, 3.5-in. flexible disk drive

• 1.5 Mbytes user RAM

• Impact Cover

• Standard Data Format Utilities

• AC Power Cord

• Operating manual set including:Operator’s GuideQuick Start GuideInstallation and Verification GuideGPIB Programming with the 35670AGPIB Commands: Quick Reference GPIB Programmer’s Guide

• Standard one-year warranty

Options for the 35670A

Opt. DescriptionAY6 Add Two Channels (four total)1D0 Computed Order Tracking1D1 Real-Time Octave

MeasurementsUK4 Microphone Adapter and

Power Supply1D2 Swept-Sine Measurements1D3 Curve Fit and Synthesis1D4 Arbitrary Waveform Source1C2 Agilent Instrument BASICAN2 Add 4 Mbytes MemoryUFC Add 8 Mbytes Memory

Note: Only one of option AN2 or UFC may be installed

UFF Add 1 Mbyte Nonvolatile RAM1F0 PC-style Keyboard1F1 German Keyboard1F2 Spanish Keyboard1F3 French Keyboard1F4 UK Keyboards1F5 Italian Keyboard1F6 Swedish KeyboardAX4 Rack Mount Without Handles100 Software Bundle 1D0-1D4, UFCUK5 Carrying Case (for shipping)0B1 Additional Manual Set0BU Additional Agilent Instrument

BASIC Manual Set0B3 Add Service Manual1BP Military Calibration

(meets MIL 45662A)W30 Two Year Extended

Service Contract

To Upgrade Your 35670A

To add an option to your 35670A, order35670U followed by the option number.Options AY6, AN2, UFC and UFF must be installed by Agilent Technologies.Option UE2 is available to upgrade instrument firmware to latest version, as appropriate.

Accessories

DC Power CablesThe 35250A is a three meter cable terminated with lugs for connecting tomost dc power sources. The 35251A is athree meter cable terminated with anadaptor that plugs into a cigarette lighter.

For Testing Control SystemsThe 35280A summing junction providesconvenient dc to 1 MHz signal injectionfor most control loops. Use the 35281Aclip-on transformer when it is not possi-ble to temporarily open the loop, or usethe 35282A signal injection transformerwhen secondary voltages are up to 600 Vpk.

Instrument ModesFFT Analysis Histogram/TimeCorrelation Analysis Time Capture

MeasurementFrequency DomainFrequency Response Power Spectrum Linear Spectrum Coherence Cross Spectrum Power Spectral

DensityTime Domain (oscilloscope mode)Time Waveform AutocorrelationCross-Correlation Orbit Diagram Amplitude DomainHistogram, PDF, CDFTrace CoordinatesLinear Magnitude Unwrapped PhaseLog Magnitude Real PartdB Magnitude Imaginary PartGroup Delay Nyquist DiagramPhase Polar

Trace UnitsY-axis Amplitude: combinations of units, unitvalue, calculated value, and unit formatdescribe y-axis amplitude

Units: volts, g, meters/sec2, inches/sec2,meters/sec, inches/sec, meters, mils, inches,pascals, Kg, N, dyn, lb, user-defined EUs

Unit Value: rms, peak, peak-to-peakCalculated Value: V, V2, V2/Hz, V/√

Hz, V2s/Hz

(ESD)

Unit Format: linear, dB’s with user selectabledB reference, dBm with user selectableimpedance.

Y-Axis Phase: degrees, radiansX-Axis: hz, cpm, order, seconds, user-definedDisplay FormatsSingleQuadDual Upper/Lower TracesSmall Upper and Large LowerFront/Back Overlay TracesMeasurement StateBode DiagramWaterfall Display with Skew, -45 to 45 DegreesTrace Grids On/OffDisplay BlankingScreen Saver

Display ScalingAutoscale Selectable ReferenceManual Scale Linear or Log X-AxisInput Range Tracking Y-Axis Log X & Y Scale Markers with Expand and Scroll

Marker FunctionsIndividual Trace MarkersCoupled Multi-Trace MarkersAbsolute or Relative MarkerPeak SearchHarmonic MarkersBand MarkerSideband Power MarkersWaterfall MarkersTime Parameter MarkersFrequency Response Markers

Summary of Featureson Standard Instrument

Signal Averaging (FFT Mode)Average Types (1 to 9,999,999 avgerages) RMS Time ExponentialRMS Exponential Peak HoldTimeAveraging ControlsOverload RejectFast Averaging On/OffUpdate Rate SelectSelect Overlap Process PercentagePreview Time RecordMeasurement ControlStart MeasurementPause/Continue Measurement

TriggeringContinuous (Freerun)External (Analog or TTL Level)Internal Trigger from any Channel Source Synchronized TriggerGPIB TriggerArmed TriggersAutomatic/ManualRPM StepTime StepPre- and Post-Trigger Measurement Delay

Tachometer Input:±4V or ±20V range40 mV or 200 mV resolutionUp to 2048 pulses/revTach hold-off control

Source OutputsRandom Burst RandomPeriodic Chirp Burst ChirpPink Noise Fixed SineNote: Some source types are not available foruse in optional modes. See option descriptionfor details.

Input ChannelsManual Range Anti-alias Filters On/OffUp-Only Auto Range AC or DC CouplingUp/Down Auto Range LED Half Range and

Overload IndicatorsFloating or Grounded A-Weight Filters On/OffTransducer Power Supplies (4 ma constant current)

Frequency20 Spans from 195 mHz to 102.4 kHz (1 channel mode)20 Spans from 98 mHz to 51.2 kHz (2 channel mode)Digital zoom with 244 mHz resolutionthroughout the 102.4 kHz frequency bands.

Resolution100, 200, 400, 800 and 1600 lines

WindowsHann UniformFlat Top Force/Exponential

Math+,-,*, / ConjugateMagnitude Real and ImaginarySquare Root FFT, FFT-1LN EXP*jω or /jω PSDDifferentiation A, B, and C weightingIntegration Constants K1thru K5

Functions F1 thru F5 Product specifications and descriptions in this document subject to change without notice.Copyright © 1997, 2000 Agilent Technologies Printed in U.S.A. 5/005966-3063E

Agilent Technologies' Test and MeasurementSupport, Services, and AssistanceAgilent Technologies aims to maximize the value you receive, while minimizing your risk and problems. We strive to ensure that you get thetest and measurement capabilities you paid forand obtain the support you need. Our extensivesupport resources and services can help you choose the right Agilent products for yourapplications and apply them successfully. Everyinstrument and system we sell has a global war-ranty. Support is available for at least five yearsbeyond the production life of the product. Twoconcepts underlie Agilent's overall support policy: "Our Promise" and "Your Advantage."

Our PromiseOur Promise means your Agilent test and measurement equipment will meet its advertisedperformance and functionality. When you arechoosing new equipment, we will help you withproduct information, including realistic perform-ance specifications and practical recommenda-tions from experienced test engineers. When you use Agilent equipment, we can verify that itworks properly, help with product operation, andprovide basic measurement assistance for the useof specified capabilities, at no extra cost uponrequest. Many self-help tools are available.

Your AdvantageYour Advantage means that Agilent offers a widerange of additional expert test and measurementservices, which you can purchase according toyour unique technical and business needs. Solveproblems efficiently and gain a competitive edgeby contracting with us for calibration, extra-costupgrades, out-of-warranty repairs, and on-siteeducation and training, as well as design, systemintegration, project management, and other professional engineering services. ExperiencedAgilent engineers and technicians worldwide canhelp you maximize your productivity, optimize thereturn on investment of your Agilent instrumentsand systems, and obtain dependable measurementaccuracy for the life of those products.

For More Assistance with Your Test & Measurement Needs go towww.agilent.com/find/assist

Or contact the test and measurement experts at Agilent Technologies (During normal business hours)

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AnalysisLimit Test with Pass/FailData Table with Tabular ReadoutData Editing

Time Capture FunctionsCapture transient events for repeated analysisin FFT, octave, order, histogram, or correlationmodes (except swept-sine). Time-captureddata may be saved to internal or external disk,or transferred over GPIB. Zoom on captureddata for detailed narrowband analysis. Up to750K samples of data can be saved in thestandard unit.

Data Storage FunctionsBuilt-in 3.5 in., 1.44 Mbyte flexible disk alsosupports 720 KByte disks, and 128 KbyteNVRAM disk. Both MS-DOS and HP-LIF formats are available. Data can be formattedas either ASCII or Binary (SDF). The 35670Aprovides storage and recall from the internaldisk, internal RAM disk, internal NVRAM disk,or external GPIB disk for any of the followinginformation:

Instrument Setup States Trace DataUser-Math Limit DataTime Capture Buffers Agilent Instrument

BASIC Programs Waterfall Display Data Curve Fit/SynthesisData Tables Tables

InterfacesGPIB (IEEE-488.1 and 488.2)ParallelRS-232C Serial

Hard-Copy OutputTo Serial or Parallel HP-GL PlottersTo Raster PrintersTo Serial or Parallel HP-GL PrintersTo Disk File (Supports Raster Printer, HP-GL Plotter, and HP-GL Printer)Time Stamp

GPIB CapabilitiesListener/Talker (Direct control of plotters,printers, disk drives)Conforms to IEEE 488.1/488.2Conforms to SCPI 1992Controller with Agilent Instrument Basic option

Standard Data Format (SDF) UtilitiesExchange data between virtually all Agilent Dynamic Signal AnalyzersEasy data transfer to spreadsheetsData transfer to MATRIXX and Matlab

SDF utilities run in an external PC

Calibration & MemorySingle or Automatic CalibrationBuilt-In Diagnostics & Service Tests Nonvolatile Clock with Time/Date Time/Date Stamp on Plots and Saved Data Files

Online HelpAccess to Topics via Keyboard or Index

FanOn/Off

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