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Keysight Technologies35670A Dynamic Signal AnalyzerVersatile two- or four-channel high-per for manceFFT-based spectrum/network an a lyz er122 µHz to 102.4 kHz 16-bit ADCData Sheet

Key SpecificationsFrequency range102.4 kHz 1 channel51.2 kHz 2 channel25.6 kHz 4 channelDynamic range90 dB typicalAccuracy 0.15 dBChannel match 0.04 dB and 0.5 degreesReal-time bandwidth25.6 kHz/1 channelResolution100, 200, 400, 800 & 1600 linesTime capture 6 MsamplesSource typesRandom, burst random, periodic chirp, burst chirp, pink noise,sine, swept-sine (Option 1D2), arbitrary (Option 1D4)Summary of Features on Standard InstrumentThe following features are standard with theKeysight Technologies, Inc. 35670A:Instrument modesFFT analysisCorrelation analysisDisplay formatsSingleQuadDual upper/lower tracesSmall upper and largelowerFront/back overlay tracesMeasurement stateBode diagramWaterfall display with skew, -45 to 45 degreesTrace grids on/offDisplay blankingScreen saverHistogram/timeTime captureMeasurementFrequency domainFrequency responseLinear spectrumCross spectrumPower spectrumCoherencePower spectral densityDisplay scalingTime domain (oscilloscope mode)Time waveformAutocorrelationCross-correlationOrbit diagramAmplitude domainHistogram, PDF, CDFTrace coordinatesLinear magnitudeLog magnitudedB magnitudeGroup delayPhaseAutoscaleSelectable referenceManual ScaleLinear or log X-axisInput range trackingY-axis logX & Y scale markers with expand and scrollMarker functionsIndividual trace markersCoupled multi-trace markersAbsolute or relative markerPeak searchHarmonic markersBand markerSideband power markersWaterfall markersTime parameter markersFrequency response markersUnwrapped phaseReal partImaginary partNyquist diagramPolarTrace unitsY-axis amplitude: combinations of units, unit value,calculated value, and unit format describe y-axis amplitudeUnits: volts, g, meters/sec2, inches/sec2, meters/sec,inches/sec, meters, mils, inches, pascals, Kg, N, dyn, lb,user-defined EUsUnit value: rms, peak, peak-to-peakCalculated value: V, V2, V2/Hz, Hz, V2s/Hz (ESD)Unit format: linear, dB’s with user selectable dB reference,dBm with user selectable impedance.Y-axis phase: degrees, radiansX-axis: Hz, cpm, order, seconds, user-definedSignal averaging (FFT mode)Average types (1 to 9,999,999 averages)RMSTime exponentialRMS exponentialPeak holdTime2

Averaging controlsMathOverload rejectFast averaging on/offUpdate rate selectSelect overlap process percentagePreview time record ,-,*, /MagnitudeSquare RootLN*jω or /jωDifferentiationIntegrationMeasurement controlStart measurementPause/continue measurementAnalysisLimit test with pass/failData table with tabular readoutData editingTriggeringContinuous (Freerun)External (analog or TTL level)Internal trigger from any channelSource synchronized triggerGPIB triggerArmed triggersAutomatic/manualRPM stepTime stepPre- and post-trigger measurement DelayTime capture functionsCapture transient events for repeated analysis in FFT,octave, order, histogram, or correlation modes (exceptswept-sine). Time-captured data may be saved to internalor external disk, or transferred over GPIB. Zoom oncaptured data for detailed nar row band analysis.Data storage functionsTachometer inputBuilt-in 3.5 in., 1.44-Mbyte flexible disk also supports720-KByte disks, and 2 Mbyte NVRAM disk. BothMS-DOS and HP-LIF formats are available. Data can beformatted as either ASCII or binary (SDF). The 35670Aprovides storage and recall from the internal disk, internalRAM disk, internal NVRAM disk, or external GPIB disk forany of the following information: 4 V or 20 V range40 mv or 200 mV resolutionUp to 2048 pulses/revTach hold-off controlSource outputsRandomBurst randomPeriodic chirpBurst chirpPink noiseFixed sineNote: Some source types are not available for use inoptional modes. See option description for details.Instrument setup statesUser-mathTime capture buffersWaterfall display dataData tablesInput channelsAnti-alias filters On/OffAC or DC couplingLED half range and overloadindicatorsFloating or groundedA-weight filters On/OffTransducer power supplies (4 ma constant current)Conforms to IEEE 488.1/488.2Conforms to SCPI 1992Controller with Keysight Instrument Basic OptionCalibration & memorySingle or automatic calibrationBuilt-in diagnostics & service testsNonvolatile clock with time/dateTime/date stamp on plots and saved data filesFrequency20 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 µHz resolution throughout the102.4 kHz frequency bands.Online helpAccess to topics via keyboard or indexResolutionFan100, 200, 400, 800 and 1600 linesHannFlat topUniformForce/exponentialTrace dataLimit dataKeysight Instrument BASICProgramsCurve fit/synthesis tablesGPIB capabilitiesManual rangeUp-only auto rangeUp/down auto rangeWindowsConjugateReal and imaginaryFFT, FFT-1EXPPSDA, B, and C weightingConstants K1 thru K5Functions F1 thru F5On/Off3

Keysight 35670A SpecificationsInstrument specifications apply after 15 minutes warm-upand within 2 hours of the last self-calibration. When theinternal cooling fan has been turned OFF, specificationsapply within 5 minutes of the last self-cal i bra tion. All specifications are with 400 line frequency resolution and withanti-alias filters enabled unless stated otherwise.FrequencyAccuracyMaximum range** 30 ppm (.003%)1 channel mode102.4 kHz,51.2 kHz (opt AY6*)Single channel ampltude2 channel mode51.2 kHz4 channel mode (Option AY6 only)25.6 kHz(A combination of full scale accuracy, full scale flatness, andamplitude linearity.) 2.92% (0.25 dB) of reading 0.025% of full scaleAbsolute amplitude accuracy (FFT)Spans1 channel mode195.3 mHz to 102.4 kHz2 channel mode97.7 mHz to 51.2 kHz4 channel mode (Option AY6 only)97.7 mHz to 25.6 kHzFFT full scale flatness (0 dBfs) relative to 1 kHz 0.2 dB (2.33%)1 channel mode122 µHz (1600 linedisplay)2 channel mode61 µHz (1600 linedisplay)FFT amplitude linearity at 1 kHz measured on 27 dBVrmsrange with time avg, 0 to -80 dBfs 0.58% (0.05 dB) of reading 0.025% of full scale4 channel mode (Option AY6 only)122 µHz (800 linedisplay)FFT full scale accuracy at 1 kHz (0 dBfs) 0.15 dB (1.74%)Minimimum resolutionAmplitude resolution(16 bits less 2 dB over-range) with averaging 0.0019% of fullscale (typical)Maximum real-time bandwidthResidual DC response (FFT mode)Frequency display (excludes A-weight filter)FFT span for continuous data acquistion)(Preset, fast averaging)1 channel mode25.6 kHz2 channel mode12.8 kHz4 channel mode (Option AY6 only)6.4 kHz -30 dBfs or 0.5 mVdcFFT dynamic rangeSpurious free dynamic range(Includes spurs, harmonic distortion, intermodulation distortion,alias products). Excludes alias responses at extremes of span.Source impedence 50 Ω.800 line display.90 dB typical ( -80 dBfs)Measurement rate(Typical) (Preset, fast averaging)1 channel mode 70 averages/sec2 channel mode 33 averages/sec4 channel mode (Option AY6 only) 15 averages/sec* Option AY6 single channel maximum range extends to 102.4 kHzwithout anti-alias filter protection.** Show all lines mode allows display of up to 131.1, 65.5 and 32.7kHz respectively. Amplitudes accuracy is unspecified and not aliasprotected.Display update rateTypical (Preset, fast average off) 5 updates/SecMaximum 9 updates/Sec(Preset, fast average off, single channel, single display,undisplayed trace displays set to data registers)4

Full span FFT noise floor (typical)Flat top window, 64 RMS averages, 800 line display.Typical noise floor vs. range for different frequency spans-70 dB/0.03%dB belowfull scale-80 dB/0.01%51.2 kHz Span6.4 kHz Span-90 dB/0.003%-100 dB/0.001%800 Hz .4Amplitude range (dBVrms / Vrms)Harmonic distortionSingle Tone (in band), 0 dBfsIntermodulation distortionTwo tones (in-band), each -6.02 dBfsSpurious and residual responsesSource impedence 50 Ω. -80 dBfs -80 dBfs -80 dBfsFrequency alias responsesSingle tone (out of displayed range), 0 dBfs, 1 MHz( 200 kHz with IEPE transducer powersupply On)2.5% to 97.5% of the frequency spanLower and upper 2.5% of frequency span -80 dBfs -65 dBfsInput noiseInput noise levelFlat top window, -51 dBVrms rangeSource impedance 50 ΩAbove 1280 Hz -140 dBVrms/ 2Hz160 Hz to 1280 Hz -130 dBVrms/ 2HzNote: To calculate noise as dB below full scale:Noise [dBfs] Noise [dB/ 2Hz] 10LOG(NBW) - Range[dBVrms]; where NBW is the noise equivalent BW of thewindow (see below).Window parameters-3 dB bandwidth*Noise equivalent bandwidth*Attenuation at 1/2 binShape factor(-60 dB BW/-3 dB BW)Uniform0.125% of span0.125% of span4.0 dB716HannFlat top0.185% of span0.1875% of span1.5 dB9.10.450% of span0.4775% of span0.01 dB2.6* For 800 line displays. With 1600, 400, 200, or 100 line displays, multiply bandwidths by 0.5, 2, 4, and 8, respectively.5

Single channel phaseCommon mode rangePhase accuracy relative to externaltrigger 4.0 deg(floating mode)16 time averages center of bin,DC coupled 0 dBfs to -50 dBfs only0 Hz freq 10.24 kHz onlyCurrent source4.25 1.5 mAOpen circuit voltage 26 to 32 VdcA-weight filterType 0 toleranceConforms to ANSI Standard S1.4-1983; andto IEC 651-1979; 10 Hz to 25.6 kHzFor Hann and flat top windows, phase is relative to a cosinewave at the center of the time record. For the uniform, force, andexponential windows, phase is relative to a cosine wave at thebeginning of the time record.CrosstalkBetween input channels, andsource-to-input (Receiving channel sourceimpedance 50 Ω)Cross-channel amplitudeFFT cross-channel gain accuracy 4 V pkIEPE transducer power supply 0.04 dB (0.46%)Frequency response modeSame amplitude rangeAt full scale: Tested with 10 RMSaverages on the -11 to 27 dBVrmsranges, and 100 RMS averages onthe -51 dBVrms rangeTime domainSpecifications apply in histogram/time mode,and unfiltered time displayCross-channel phaseCross-channel phase accuracy(Same conditions as cross-channelamplitude) 0.5 degInputInput ranges (full scale)(Auto-range capability)Maximum input levels42 VpkInput impedance1 MΩ 10%90 µF nominalLow side to chassis impedanceFloating modeGrounded mode1 MΩ 30% (typical) 0.010 µF 100 ΩAC coupling rolloff 3 dB rolloff at 1 HzSingle tone at or below 1 kHz 75 dB typical-9 dBVrms to 9 dBVrms ranges 60 dB typical 11 dBVrms to 27 dBVrms ranges 50 dB typical 5.0 %fsRise time of -1 V to 0 V test pulse 11.4 µSecSettling time of -1 V to 0 V test pulse 16 µSec to 1%Peak overshoot of -1 V to 0 Vtest pulse 3%1 channel mode2 channel mode4 channel mode(Option AY6 only)Common mode rejection ratio-51 dBVrms to -11 dBVrms rangesDC amplitude accuracySampling period 27 dBVrms (31.7 Vpk) to -51 dBVrms(3.99 mVpk) in 2 dB stepsSource impedance 50 Ω -135 dBbelow signal or -80 dBfs ofreceivingchannel,whicheverresponse isgreater inamplitude63.815 µSec to 2 Sec in 2x steps7.629 µSec to 4 Sec in 2x steps15.26 µSec to 8 Sec in 2x steps