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Supplemental Operator’s Guidefor the Agilent 35670A Dynamic Signal AnalyzerBy: David ForrestSeattle Sound and Vibration, inc.Print Date: December, 200

AGILENT 35670ASupplemental Operator’s Guide6 Any frequency below 51.2 kHz may of course be entered, however the analyzer willselect the lowest span th

AGILENT 35670ASupplemental Operator’s Guide7Input CH1 Rng: 501.7819 mVpk CH2 Rng: 631.706 mVpk CH3 Rng: 2.5149 Vpk CH4 Rng: 2.5149 Vpk Date:

AGILENT 35670ASupplemental Operator’s Guide8Section 5 : Improving Measurement ResultsFrequency Zooming to Increase ResolutionThe AGILENT 35670A has th

AGILENT 35670ASupplemental Operator’s Guide9 If continuous real-time measurements over a long duration are required, andabsolutely no overload conditi

AGILENT 35670ASupplemental Operator’s Guide10• Systm Util Date: 10-02-96 Time: 08:40 PM Date: 01-02-04 Time: 12:44:00 PMA: CH1 Pwr Sp

AGILENT 35670ASupplemental Operator’s Guide11Section 6 : Measuring a Single Channel Time WaveformThis section contains procedures for setting up and m

AGILENT 35670ASupplemental Operator’s Guide12Selecting Time Record LengthThe default time record length at a frequency span of 51.2 kHz is only 7.8 ms

AGILENT 35670ASupplemental Operator’s Guide13• Press the [ARM] softkey (F9) again.Event TriggeringThe AGILENT 35670A has the ability to trigger the ac

AGILENT 35670ASupplemental Operator’s Guide14Input CH1 Rng: 1.0012 Vpk CH2 Rng: 631.706 mVpk CH3 Rng: 2.5149 Vpk CH4 Rng: 2.5149 Vpk Date:

AGILENT 35670ASupplemental Operator’s Guide15Section 7 : Measuring Dual Channel SpectraThis section contains procedures for setting up and measuring a

AGILENT 35670ASupplemental Operator’s GuideSECTION 1 : TURNING ON THE AGILENT 35670A ...

AGILENT 35670ASupplemental Operator’s Guide16• Press the [Meas Data] hardkey.• Press the [CHANNEL 1 2 34] softkey (F1) until 2 is highlighted.• Press

AGILENT 35670ASupplemental Operator’s Guide17 Use the marker knob to read the amplitude at any measured frequency for Channel 1in Trace A. To set up

AGILENT 35670ASupplemental Operator’s Guide18Section 8 : Improving Dual Channel Measurement ResultsMaximizing Dynamic RangeAutoranging to maximize the

AGILENT 35670ASupplemental Operator’s Guide19Avg[FFT]Type: RMS Number: 10 Update Rt: 5 Overlap: 0 % Dat

AGILENT 35670ASupplemental Operator’s Guide20Section 9 : Measuring Dual Channel Time WaveformsThis section contains procedures for setting up and meas

AGILENT 35670ASupplemental Operator’s Guide21• Press the [CHANNEL 1 234] softkey (F1) until 1 is highlighted.• Press the [TIME CHANNEL 1] softkey (F5)

AGILENT 35670ASupplemental Operator’s Guide22 Then set up trigger parameters (for a positive event, positive slope) as follows:• Press the [TRIGGER SE

AGILENT 35670ASupplemental Operator’s Guide23Using Markers with Dual Channel Time MeasurementsCompare the time trace of Channel 1 with Channel 2 using

AGILENT 35670ASupplemental Operator’s Guide24• Press the [Active Trace] hardkey.• Press the [ABCD] softkey (F7).• Press the [Scale] hardkey.• Toggle t

AGILENT 35670ASupplemental Operator’s Guide25Section 11 : Modal Testing Using a Hammer and AccelerometerHammer testing is often the easiest and quicke

AGILENT 35670ASupplemental Operator’s GuideSECTION 11 : MODAL TESTING USING A HAMMER AND ACCELEROMETER ... 25SETTING UP

AGILENT 35670ASupplemental Operator’s Guide26• Toggle the [XDCR UNIT ON OFF] softkey (F4) until ON is highlighted.• Press the [XDCR UNIT LABEL] softke

AGILENT 35670ASupplemental Operator’s Guide27• Press the [TRIGGER SETUP] softkey (F6)• Press the [ALL CHANNELS] softkey (F8)• Press the [CHANNEL * DEL

AGILENT 35670ASupplemental Operator’s Guide28Window[FFT]Type: Force/Expo Width: 15 ms Decay: 30 ms Date: 10-02-96 Time: 09

AGILENT 35670ASupplemental Operator’s Guide29window time constant of 62.5 ms. To set up these Force/Response windows, followthese steps:• Press the [

AGILENT 35670ASupplemental Operator’s Guide30significantly. Ten averages may take longer, but may be necessary when testingdifficult, non-linear stru

AGILENT 35670ASupplemental Operator’s Guide31Changing Frequency SpanChanging frequency span or resolution affects three important parameters in hammer

AGILENT 35670ASupplemental Operator’s Guide32Section 12 : Hammer Test Setup Without a Force TransducerHammer testing for modal analysis without a forc

AGILENT 35670ASupplemental Operator’s Guide33Section 13 : Order Domain Results in List ModeMachinery run-ups and run-downs can be analyzed with order

AGILENT 35670ASupplemental Operator’s Guide34• Enter 4 and press the [ORDERS] softkey (F1).• Enter 5 and press the [ORDERS] softkey (F1).• Enter 6

AGILENT 35670ASupplemental Operator’s Guide35Section 14 : Comparing Two-Channel Real-Time Spectra with Recalled DataCompare two channels of real-time

AGILENT 35670ASupplemental Operator’s GuideSECTION 21 : USING AN EXTERNAL TRIGGER FOR TIME AVERAGING ... 60SPE

AGILENT 35670ASupplemental Operator’s Guide36• Press the [MORE CHOICES] softkey (F9).• Press the [DATA REGISTER] softkey (F8).• Press the [D2] softkey

AGILENT 35670ASupplemental Operator’s Guide37• Press the [Save/Recall] hardkey.• Press the [RECALL DATA] softkey (F4).• Press the [RCL TRACE AND SCALE

AGILENT 35670ASupplemental Operator’s Guide38 Scaling for traces A and B are now identical. To accomplish the same trace scalingfor C and D, follow t

AGILENT 35670ASupplemental Operator’s Guide39Section 15 : Waterfall Spectra at Time IntervalsWaterfalls on the AGILENT 35670A can be used to examine a

AGILENT 35670ASupplemental Operator’s Guide40• Press the [Disp Format] hardkey.• Press the [WATERFALL SETUP] softkey (F8).• Toggle the [WATERFALL ON O

AGILENT 35670ASupplemental Operator’s Guide41 This makes the waterfall trace active.• Press the [Marker Fctn] hardkey.• Press the [WATERFALL MARKERS]

AGILENT 35670ASupplemental Operator’s Guide42Section 16 : Waterfall Spectra at RPM IntervalsSpectra can be acquired at fixed RPM intervals with RPM ST

AGILENT 35670ASupplemental Operator’s Guide43• Press 50 then the [RPM] softkey (F1). Then specify the total number of spectra to be collected (15):•

AGILENT 35670ASupplemental Operator’s Guide44Marker Fcn[Watrfall]Trace: B Save Reg: D2 Base Supr: 0 % Height: 57 %

AGILENT 35670ASupplemental Operator’s Guide45Section 17 : Two-Channel Absolute and Differential Amplitude MeasurementMeasuring the relative motion bet

AGILENT 35670ASupplemental Operator’s Guide1Section 1 : Turning On the AGILENT 35670AThe entire turn-on procedure for the AGILENT 35670A takes 40 seco

AGILENT 35670ASupplemental Operator’s Guide46• Toggle the [AUTOSCALE ON OFF] softkey (F1) until ON is highlighted..• Press the [Active Trace] hardkey.

AGILENT 35670ASupplemental Operator’s Guide47• difference in motion between Channel 1 and Channel 2 in mils peak-to-peak• phase angle between the tw

AGILENT 35670ASupplemental Operator’s Guide48• Toggle the [CHANNEL 1 2 34] softkey (F1) until 2 is highlighted.• Press the [LIN SPEC CHANNEL 2] softk

AGILENT 35670ASupplemental Operator’s Guide49• Press the [Active Trace] hardkey again.• Press the [D] softkey (F2).• Press the [Trace Coord] hardkey.•

AGILENT 35670ASupplemental Operator’s Guide50Section 18 : Measuring Frequency Response with the AGILENT 35670AFrequency response functions characteriz

AGILENT 35670ASupplemental Operator’s Guide51• Attach one end of stinger to shaker and one end to force transducer• Connect amplifier output to shak

AGILENT 35670ASupplemental Operator’s Guide52 Choose measurement parameters• Press the [Freq] hardkey• Enter 800 and then press the [Hz] softkey (F2)

AGILENT 35670ASupplemental Operator’s Guide53• Turn up the level control on the shaker amplifier until the excitation isnoticeable, but does not buzz

AGILENT 35670ASupplemental Operator’s Guide54• Press the [Disp Format] hardkey.• Press the [SINGLE] softkey (F1)• Press the [Active Trace] hardkey.• P

AGILENT 35670ASupplemental Operator’s Guide55• Toggle the [AUTOSCALE ON OFF] softkey (F1) until ON is highlighted.• Press the [Active Trace] hardkey.•

AGILENT 35670ASupplemental Operator’s Guide2Section 2 : Measurement State After Turn-onInst Mode FFT Channels 2Measurement Source INPUTMeas Data Data

AGILENT 35670ASupplemental Operator’s Guide56Section 19 : Two Spectral Traces Showing Mils and Ips while EU is GMeasure an accelerometer signal and di

AGILENT 35670ASupplemental Operator’s Guide57• Press the [Trace Coord] hardkey.• Press the [Y UNITS] softkey (F8)• Toggle the [AMPLITUDE PK PP RMS] so

AGILENT 35670ASupplemental Operator’s Guide58Section 20 : Peak Hold During a Machine Run-up and Coast-DownPeak amplitudes experienced during run-ups a

AGILENT 35670ASupplemental Operator’s Guide59• Press the [Active Trace] hardkey.• Press the [A] softkey (F5).• Press the [Scale] hardkey.• Toggle the

AGILENT 35670ASupplemental Operator’s Guide60Section 21 : Using an External Trigger for Time AveragingUse external triggering for synchronous averagin

AGILENT 35670ASupplemental Operator’s Guide61 Acquire and Display the Trigger Signal• Press the yellow [Start] hardkey.• Press the [Freq] hardkey.•

AGILENT 35670ASupplemental Operator’s Guide62Measuring Time Averaged Spectrums with External TriggeringNow that the external trigger has been set up,

AGILENT 35670ASupplemental Operator’s Guide63Section 22 : Saving Trace Data to a 3.5” Disk or Non-Volatile RAMSave trace data into non-volatile RAM or

AGILENT 35670ASupplemental Operator’s Guide64Saving Trace to Non-Volatile RAM (NV-RAM)To store Trace A data as a file named “N1.DAT” into NV-RAM, foll

AGILENT 35670ASupplemental Operator’s Guide65Section 23 : Recalling Trace Data From 3.5” Disk or Non-Volatile MemoryRecall trace data from a file in n

AGILENT 35670ASupplemental Operator’s Guide3Section 3 : Measuring with TransducersThe AGILENT 35670A can be used with a broad range of transducers. T

AGILENT 35670ASupplemental Operator’s Guide66• Press the [DATA REGISTER] softkey (F8).• Press the [D2] softkey (F2).• Press the [Save/Recall] hardkey.

AGILENT 35670ASupplemental Operator’s Guide67Section 24 : Plotting and Printing Trace DataUse the plotting and printing capability of the AGILENT 3567

AGILENT 35670ASupplemental Operator’s Guide68• Select the [SYSTEM CONTROLLR] softkey (F2). Check the Plot/Print Destination• Press the [Plot/Print] ha

AGILENT 35670ASupplemental Operator’s Guide69Section 25 : Importing Plots into Microsoft WordThe plotter output of the AGILENT 35670A conforms to the

AGILENT 35670ASupplemental Operator’s Guide70Plot to a File Using the AGILENT 35670AThe AGILENT 35670A has the ability to route plotter output to a fi

AGILENT 35670ASupplemental Operator’s Guide71Section 26 : Running a Single Calibration Test on CommandThe AGILENT 35670A automatically runs periodic s

AGILENT 35670ASupplemental Operator’s Guide72Section 29 : Transducer Unit Conversion with the AGILENT 35670AAutomatic conversion between acceleration,

AGILENT 35670ASupplemental Operator’s Guide73• Press the [XDCR UNIT CONVERT] softkey (F4)• Press the [inch (DISP)] softkey (F7)• Press the [Scale] har

AGILENT 35670ASupplemental Operator’s Guide74• Press the [DEFINE CONSTANT] softkey (F2).• Press the [DEFINE K1] softkey (F1).• Enter 386.4 and press

AGILENT 35670ASupplemental Operator’s Guide75Section 30 : Using the Agilent Technologies Demostration Unit with the AGILENT35670ASeveral of the sectio

AGILENT 35670ASupplemental Operator’s Guide4For example, if an accelerometer has am internal sensitivity of 25 pC/g, and a chargeamplifier has a gain

AGILENT 35670ASupplemental Operator’s Guide76above the track number.The following descriptions link the Section in this User’s Guide to the appropriat

AGILENT 35670ASupplemental Operator’s Guide77Section 4: Measuring a Single Channel SpectrumCD Track: 24CD Track Desc.: 160 kHz Calibration ToneLeft Ch

AGILENT 35670ASupplemental Operator’s Guide78Section 10: Measuring Dual Channel Spectra and Time WaveformsCD Track: 41CD Track Desc.: Current Probe, T

AGILENT 35670ASupplemental Operator’s Guide5Section 4 : Measuring a Single Channel Power Spectrum - DisplacementThis section contains procedures for s