WIXLIB

07 Keysight 35670A Dynamic Signal Analyzer - Technical OverviewFrequency Response MeasurementsThe 35670A has the flexibilityto make measurements of bothelectrical networks and me chan i caldevices. FFT-based network analysisis fast enough to allow real-timead just ments of circuit pa ram e terswhile the swept-sine option providesexacting mea sure ments over morethan six fre quen cy decades, and a130 dB dynamic range.SourceSelect the optimum stimulus for eachap pli ca tion—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 upto 51.2 kHz. An optional arbitrarysource lets you test your productusing real-world signals. A 10 VoltDC source offset facilitates tests ofcontrol systems.Four channels (Option AY6)MarkersTest up to three devices si mul taneous ly with a four-channel35670A. Channel one is the commonreference channel and two, three,and four are the response channels.Alternatively, select channels oneand three as reference channels fortwo totally independent networkmea sure ments. See Option AY6de scrip tion for more in for ma tion.A frequency and damping markerprovides the resonant frequencyand the damping ratio of single-degree-of-freedom frequency responsemea sure ments.Gain and phase margin markersextract key frequency-domain stability data from frequency responsemea sure ments of control systems.Limits are usedfor go/no go testingin production. Theresponse of anaccelerometer isbeing checked inthis example.Impact testingForce and exponential windowsallow impact testing for modal andstruc tur al analysis. Quality mea sure ments are ensured using previewand accept/reject during averaging.A 4 mA constant current transducerpower supply is built-in for trueport a bil i t y.LimitsTest network measurements againstpreset limits. Up to 800 separate linesegments are available for settingupper and lower limits. Limits arealso used for testing spectrummea sure ments.Characteristics of aselected resonanceare automaticallycalculated from animpact mea sure mentusing the fre quen c yand damping marker.

08 Keysight 35670A Dynamic Signal Analyzer - Technical OverviewTime CaptureCapture transient events or timehistories for complete analysis in anymea sure ment mode (except sweptsine). Use either the entire time-capture record or a selected region ofinterest for re pet i tive analysis in theFFT, octave, order track, cor re la tionor histogram instrument modes.Standard 16 Mbytes of memory fordeep time-capture capability.An interval oftime-capture datahas been selected foranalysis in the octavemode.

09 Keysight 35670A Dynamic Signal Analyzer - Technical OverviewUsing Measurement ResultsComputed OrderTracking (Option 1D0)Taking the measurement is only halfthe job. Raw measurement data mustbe stored, recalled, printed, plotted,integrated with other data for analysis,and reported. The 35670A helps youfinish the job.– S elf-contained—no ratiosynthesizer or tracking filterrequired– Order maps– Order tracking– RPM or timetrigger– Display RPM profile– Track up to five orders/channel– Up to 200 orders– Composite power– RPM measurementsDocumented resultsThe 35670A supports GPIB, serialand parallel printers and plotters fordirect hardcopy output. The printersand plotters that can be connecteddirectly to the 35670A are limitedto older HP-GL printers with PCL 5capability (HP LaserJet 4000 series isone such printer).The internal 3.5 inch flexible diskdrive stores data (Standard DataFormat – SDF or ASCII), instrumentstates, HP-GL plots and Keysight In stru ment BASIC programs in HP-LIFor MS-DOS formats for future recallor use on a personal computer.Entire display screens can be im port eddirectly into your word processingprogram by plotting HP-GL files toyour named DOS file. HP-GL filesare interpreted and dis played directlyby Microsoft’s Word for Windows.For general digital signal processingand filtering, data files may be storedas ASCII, and then imported to anExcel spreadsheet via the floppydrive, DataLink, or GPIB.For specific applications, useapplication software that reads SDFfiles directly, such as STARModaland STARAcoustics from SpectralDynamics and MEScope fromVibrant.The slice markerfeature is used toselect and displayan order or suborderfrom an order map.Order tracking facilitates evaluationof spectra from rotating machines bydisplaying vibration data as a functionof orders (or harmonics) rather thanfrequency. All measurement spectrais normalized to the shaft RPM.Now you can have order trackingwithout compromising portability.Traditional analog order trackingtechniques require external trackingfilters and ratio synthesizers. WithKeysight’s computed order trackingal go rithm, external hardware is gone.Because order tracking is im ple ment ed in the software, data ismore precise and your job is easier.Com pared to traditional analog ordertracking techniques, computed ordertracking offers:– I mproved dynamic range at highorders– More accurate tracking of rapidlychanging shaft speeds– Accurate RPM labeled spectra withexact RPM trigger arm– Wide 64:1 ratio of start to stopRPMs

10 Keysight 35670A Dynamic Signal Analyzer - Technical OverviewOrder mapUse order maps for an overview ofvibration data versus RPM or time.Display the amplitude profile ofindividual orders and suborders usingthe slice marker function.Al ter na tive ly, use trace markers toselect individual traces for display.Oscilloscope-qualityorbit diagrams meanyou carry only oneinstrument onto theshop floor.Order trackingMeasure only the data you need.Order tracking lets you measure theam pli tude profile of up to five ordersplus composite power si mul ta neous lyon each channel. Up to four ordersor three orders and composite powercan be displayed simultaneously.RPM profileOrder tracking is used tosi mul t a neous ly displayup to four orders or acombination of orders,composite power andRPM profile.Use RPM profile to monitor thevari a tion of RPM with time duringorder tracking mea sure ments.Composite powerComposite power provides the totalsignal power in a selected channel asa function of RPM.Run-up and run-downmea sure mentsRun-up and run-down mea sure mentsof any order are made using externaltrigger as the phase reference.Display the results as bode or polarplots; both are available. Markersallow con ve nient notation of im por tant shaft speeds.OrbitsObtain 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.Markers are used toannotate shaft speedsat selected points in arun-up measurement.

11 Keysight 35670A Dynamic Signal Analyzer - Technical OverviewReal-Time Octave Measurements (Option 1D1)Microphone Adapter and Power Supply (Option UK4)Real-time third octave to 40kHzANSI S1.11-1986 filtershapesA-weighted overall SPLRPM or time-triggeredwaterfallsElim i nate the expense and in con ve nience of multiple instruments in thefield. With optional real-time octaveanalysis, and the optional mi cro phoneadapter and power supply, you havea complete real-time octave analyzeradded to your 35670A at a fractionof the cost of a second instrument.Now you can carry both your FFT andreal-time octave analyzers to the jobsite in the same hand.ANSI S1.11-1986All 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 spectrumpro vides the performance requiredby ac ous ti cians. Switchable analogA-weighting filters in the inputchannels comply fully with both ANSIS1.4-1983 and IEC 651-1979 Type 0.Advanced analysisUse waterfall displays of octave datafor an overview of device noise versustime or RPM. Display in di vid u alfre quen cy bands as a function ofRPM or time using the slice markerfunction. Al ter na tive ly, use tracemarkers to select individual tracesfor display.A pink noise source is available fortesting electro-acoustic devices.Sound level metermea surementsPeak hold, impulse, fast, slow, andLeq are all provided with optionalreal-time octave measurements.All measurements conform toIEC 651-1979 Type 0 – Impulse.This waterfall displayof a flyover test can beanalyzed trace-by-traceor by selecting timeslices along the z-axis.Real-time 1/3-octave to 40kHz on one channelWith two input channels of 1/3-octave real-time measurements atfre quen cies up to 20 kHz, you get allof the in for ma tion you’ll ever need tounderstand the noise per for manceof your product. No mis in ter pret edmeasurements because transientcomponents were missed. Whenthe frequency range re quire ment is10 kHz or less, use four channels tochar ac ter ize spatial variations. Forthose exceptional circumstances, use1/3-octave res o lu tion at frequenciesup to 40 kHz on a single channel.Res o lu tions of 1/1- and 1/12-octaveare also available.Overall sound pressure level andA-weighted sound pressure level canbe displayed with the octave bandsindividually, together, or not at all.A fan-off mode lets you use thein s tru ment in the sound field beingmeasured.Real-time 1/3-octavemea sure ments atfrequencies up to40 kHz.Keysight 35670A withOption UK4 mi cro phoneadapter and power supply.

12 Keysight 35670A Dynamic Signal Analyzer - Technical OverviewSwept-Sine Measurements (Option 1D2)130 dB dynamic rangeLogarithmic or linear sweeps“Auto” frequency resolutionWhile FFT-based network analysisis fast and accurate, swept-sinemea sure ments are a better choicewhen the device under test has awide dynamic range or covers severaldecades of frequency range. Useswept- sine measurements to extendthe network measurement ca pa bil i ties of the 35670A.Network analysis over a130 dB rangeWith traditional swept-sine, the35670A is optimally configured tomeasure each individual point in thefrequency response. The result is a130 dB dynamic range. With FFTbased network analysis, all fre quen cypoints are stimulated simultaneouslyand the instrument configures itselfto measure the highest amplituderesponse—thereby limiting thedynamic range.Characterize nonlinearnet worksUse 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, therandom am pli tudes of the stimulustend to “average out” the non-linearities and therefore does not capturethe dependency of the response onthe stimulus amplitude.Logarithmic sweepTest devices over more than sixdecades of frequency range usinglogarithmic sweep. In this mode, thefrequency is automatically adjustedto provide the same resolution overeach decade of frequency range.With FFT-network analysis, resolution is constant—not a problem whenmeasuring over narrow frequencyranges.FlexibleMake the measurement your way.Independently select logarithmicor linear sweep, sweep up or down,automatic or manual sweep, andautoresolution.Test multiple devicessimultaneouslyIncrease throughput in production.Swept-sine measurements up to25.6 kHz can be made on threedevices simultaneously using sweptsine on a four-channel 35670A.Channel one is the common referencechannel for these measurements.Alternatively, channels one andthree can be designated as in de pen dent reference channels for twototally independent swept-sinemea sure ments.Automatic frequencyresolutionUse autoresolution to obtain thefastest sweep possible withoutsacrificing accuracy. With autoresolution, the 35670A automaticallyadjusts the frequency step accordingto the device re sponse. High ratesof amplitude and phase changeare matched with small frequencysteps. Low rate-of -change regionsare quickly measured with largerfrequency steps.The stability of acontrol loop is quicklychar ac ter ized using thegain and phase marginmarker function.

13 Keysight 35670A Dynamic Signal Analyzer - Technical OverviewKeysight Instrument BASIC (Option 1C2)Realize the advantages of using yourinstrument with a com put er withoutsacrificing portability. KeysightInstrument BASIC provides the powerof a com put er inside your 35670A.– C reate custom interfaces forsimplified operation.– U se the 35670A as a systemcontroller to integrate it with otherinstruments and peripherals.– E nhance functionality by creatingcustom measurements.– I ncrease productivity withautomated operation.Keysight Instrument BASIC is acom pat i ble subset of the KeysightBASIC used in HP 9000 series 200,300, 400 and 700 computers.Easy programmingThe Keysight Instrument BASICprogram editor supports:– L ine-by-line syntax checking– P re-run program verification– S ingle step and debug– A utomatic line numberingAn optional PC-style 101-keykey board facilitates program de vel op ment and editing. Simple programscan be entered or edited using thefront-panel keys.Over 200 Keysight Instrument BASIC ––––– rogram entry and editingP Program debugging Memory allocation Relation operatorsG eneral mathG raphics control Graphics plotting Graphics axes and labelingP rogram control Binary functionsT rigonometric operations S tring operations Logical operators GPIB control Mass storage Event initiated branching Clock and calendar General device I/O Array operationsKeystroke recordingMost program development beginswith keystroke recording. Eachkeystroke is automatically saved asa program instruction as you set upyour mea sure ment using the frontpanel. The recorded sequence can beused as the core of a so phis ti cat edprogram or run as an automaticsequence.Keystroke recordingquickly creates thecore of your KeysightInstrument BASICprogram.Keysight InstrumentBASIC can be used todisplay mea sure mentresults in a new formator to create a newoperator interface.

14 Keysight 35670A Dynamic Signal Analyzer - Technical OverviewAdd Two Channels(Option AY6)Curve Fit and Synthesis (Option 1D3)51.2 kHz frequency range onone and two chan nels20 poles/20 zeros curvefitter25.6 kHz frequency range onfour chan nelsFrequency responsesynthesisOne or two referencechannelsPole/zero, pole/residue andpolynomial formatEnhance your productivity by addingtwo additional input channels toyour portable analyzer. Having fourchannels often means the differencebetween solving a problem in thefield and having to schedule time in atest bay.Use curve fit and synthesis in the35670A 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 in pole/zero, pole/residue, or polynomialformat.Monitor four signals si mul ta neous lyor 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 in de pen dent reference channels. All channelsare sampled si mul ta neous ly.Use triaxial measurements to si mul ta neous ly characterize the motion ofmechanical devices in three axes.For control systems, si mul ta neous lymeasure several points in a singleloop.Transfer the circuit model to thesynthesis 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 mod i f i ca tions are testedwithout ever touching a solderingiron.Curve fit provides anexact math e mat i c almodel of your circuitor device.

15 Keysight 35670A Dynamic Signal Analyzer - Technical OverviewArbitrary WaveformSource (Option 1D4)Store up to eightarbitrary wave formsTest your products using real-worldsignals. Measure a signal in eitherthe time or frequency domain, thenoutput it via the arbitrary waveformsource. Use math functions and dataedit to obtain precisely the outputwave form you need. An arbitrarywave form may be output once orre peat ed ly.Standard source types can beop ti mized for specific applications.For ex am ple, random noise can beshaped to improve the effectivedynamic range of your mea sure ment.Al ter na tive ly, you can use data editand math functions to create anarbitrary wave form.Standard 16 MbytesRAMNumber of spectra stored per channelStandard 16 MbyteFFT–1 channel 1FFT–2 channels 2FFT–4 channels 31/3-octavespectra 4Time capture 1140060030048000 6 MSamples1.1Conditions: Preset withinstrument modeswitched to 1 channel.2. 2Conditions: Preset3. 3Conditions: Preset withinstrument modeswitched to 4 channels.4. 4Conditions: Preset withinstrument mode switched to octave.Standard 2 MbyteNonvolatile RAMUse the 2 Mbyte nonvolatile RAM asan alternative to the 3.5 inch flexibledisk drive. The memory functions asa high-speed disk for storage of thefollowing information.– Instrument setup states– Trace data– User math definitions– Limit data– T ime capture buffers– Keysight InstrumentBASIC programs– Waterfall display data– Curve fit/synthesis tables– Data tablesInformation stored in nonvolatileRAM is retained when the poweris off.DataLink data transfersolution (no charge Option1G0)Use time capture as a digital taperecorder, then playback capturedsignals through the arbitrary wave form source.Math functions are usedto optimize a burst chirpsignal for a frequencyresponse mea sure ment.DataLink data transfer solution, ano charge option for new 35670A’s,provides all hardware and softwarerequired to transfer data from thenon-volatile RAM, standard RAM, orfloppy drive to your PC. Hardwareprovided includes the 82357B GPIBto USB converter. Software providedincludes Instrument Basic installedon the 35670A, plus DataLinksoftware and I/O Libraries that are tobe installed on your computer.

16 Keysight 35670A Dynamic Signal Analyzer - Technical OverviewKeysight 35670A Ordering InformationKeysight 35670ADynamic Signal Analyzerstandard con fig u ra tion– 1 .4 Mbyte, 3.5-in. flexible diskdrive– 1 2 Mbytes user RAM– 2 Mbytes nonvolatile RAM– I mpact cover– S tandard data format utilities– A C power cord– O perating manual set including:Operator’s guideQuick start guideInstallation and verification guideGPIB programming with the 35670AGPIB commands: Quick ref er enceGPIB pro gram mer’s guideOptions for the 4100UK50B10BU0B3UK6W30W501BPW30DescriptionAdd two chan nels (four total)Computed order trackingReal-time octavemeasurementsMicrophone adapter and powersupplySwept-sine measurementsCurve fit and synthesisArbitrary wave form sourceKeysight Instrument BASICDataLink data transfer solutionPC-style keyboardRack mount without handlesSoftware bundle 1D0-1D4Carrying case (for shipping)Additional manual setAdditional Keysight InstrumentBASIC manual setAdd service manualCommercial calibration withtest dataTwo year extended servicecontractFour year extended servicecontractMilitary cal i bra tion(meets MIL 45662A)Two year extended servicecontractTo upgrade your 35670ATo add an option to your 35670A,order 35670U followed by theoption number. Options AY6 andAN2 must be installed by KeysightTechnologies. Option UE2 is availableto upgrade instrument firmware tolatest version,as appropriate.Option IGI provides a softwareupgrade for the DataLink transfersolution (includes DataLink SW,Instrument Basic, and I/O Libraries).Hardware required for DataLink,such as the 82357B GPIB to USBconverter,is sold separately. A firmwareupgrade (Option UE2) may also berequired.AccessoriesDC power cablesThe 35250A is a three meter cableterminated with lugs for connectingto most DC power sources. The35251A is a three meter cableter mi nat ed with an adapter that plugsinto a c

02 Keysight 35670A Dynamic Signal Analyzer - Technical Overview The Keysight Technologies, Inc. 35670A is a portable two- or four-channel dynamic signal analyzer with the versatility to be several instruments at once. Rugged and portable, it's ideal for field work. Yet it has the performance and unc f on i t l a d eor drmeng f y qeunai di .