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Agilent Technologies Agilent 35670A manual Setting Up the Transducer Parameters

Models: Agilent 35670A

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Setting Up the Transducer Parameters

AGILENT 35670A

Supplemental Operator’s Guide

Section 11 : Modal Testing Using a Hammer and Accelerometer

Hammer testing is often the easiest and quickest technique for measuring frequency response functions used in modal analysis. Instructions for using a hammer with a force transducer and an accelerometer to measure frequency response functions are presented.

Setting Up the Transducer Parameters

Connect the force transducer on the hammer to Channel 1. Mount the response accelerometer to the desired location on the structure, and connect it (or its preamplifier) to Channel 2. Preset the analyzer and set up transducer parameters as follows, assuming an ICP accelerometer with a sensitivity of 11 mV/g and an ICP force transducer on the hammer with a sensitivity of 5 mV/lb:

•Press the green [Preset] hardkey

•Press [DO PRESET] softkey (F1).

Wait for the analyzer to finish its preset routine.

•Press the [Pause/Cont] hardkey to pause the current measurement.

Set up the force transducer parameters as follows:

•Press the [Input] hardkey

•	Press [CHANNEL 1 2 3 4] softkey (F1) until 1 is highlighted.
•	Press	[FRONT END CH1 SETUP] softkey (F7).
•	Press	[ICP SUPLY ON OFF] softkey (F8) until ON is highlighted.

•Press the [Input] hardkey.

•Press the [XDCR SENSITVTY] softkey (F6).

•Enter 5, then press the [mV/EU] softkey (F2).

• Toggle the [XDCR UNIT ON OFF] softkey (F4) until ON is highlighted.

•Press the [XDCR UNIT LABEL] softkey (F7).

•Press the [MORE CHOICES] softkey (F9).

•Select the [ lb ] softkey (F6).

•[XDCR UNIT CH1 SETUP] softkey (F8)

Set up the accelerometer parameters as follows:

•Press the [Input] hardkey.

•	Press	[CHANNEL 1	2 3 4] softkey (F1) until 2 is highlighted.
•	Press [FRONT END CH2 SETUP] softkey (F7).
•	Press	[ICP SUPLY ON OFF] softkey (F8) until ON is highlighted.

•Press the [Input] hardkey.

•Press [XDCR UNIT CH2 SETUP] softkey (F8)

•Press the [XDCR SENSITVTY] softkey (F6).

•Enter 11, then press the [mV/EU] softkey (F2).

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Agilent Technologies Agilent 35670A manual Setting Up the Transducer Parameters

Contents

Supplemental Operator’s Guide for the Agilent 35670A Dynamic Signal AnalyzerAGILENT 35670A Supplemental Operator’s Guide SECTION 13 ORDER DOMAIN RESULTS IN LIST MODE SECTION 24 PLOTTING AND PRINTING TRACE DATA Section 1 Turning On the AGILENT 35670A Meas Data Inst ModeTrac Coord Coord A FreqSection 3 Measuring with Transducers Using ICP-TypeTransducers with the AGILENT 35670AUsing Transducers with External Preamplifiers Specifying Transducer Sensitivity and Units Selecting Frequency Span Setting Up Transducer Units for DisplacementSelecting Single Channel Operation Frequency Spans Available for the AGILENT 35670A Quantifying Power Spectrum Results Section 5 Improving Measurement Results Frequency Zooming to Increase ResolutionMaximizing Dynamic Range Averaging to Reduce Measurement Variance AGILENT 35670A Supplemental Operator’s Guide Selecting Single Channel Operation AGILENT 35670A Supplemental Operator’s GuideDisplaying Time Waveforms Selecting Time Record LengthEvent Triggering Quantifying Time Trace Results Selecting Dual Channel Operation Presetting the AnalyzerSection 7 Measuring Dual Channel Spectra Selecting Frequency SpanUsing Markers with Dual Channel Measurements Coupled Markers with Peak Tracking Coupled MarkersMaximizing Dynamic Range Dual Channel AveragingAGILENT 35670A Supplemental Operator’s Guide Section 9 Measuring Dual Channel Time Waveforms Displaying Dual Time WaveformsSelecting Dual Channel Operation Selecting Time Record LengthTriggering a Dual-ChannelTime Measurement Arming Dual Channel Time MeasurementsTrigger Delay Using Markers with Dual Channel Time Measurements AGILENT 35670A Supplemental Operator’s Guide Setting Up the Transducer Parameters Specifying Trigger Parameters Setting Up Input RangeChoosing a Preliminary Frequency Span WAITING FOR CH 1 TRIGGER Setting Up Time DisplaysUsing Force/Response Windows Averaging Displaying Hammer Test ResultsAGILENT 35670A Supplemental Operator’s Guide Delay = 01.T ForceWidth = T ExponentialDecay = T Changing Frequency SpanAGILENT 35670A Supplemental Operator’s Guide Section 13 Order Domain Results in List Mode AGILENT 35670A Supplemental Operator’s GuidePrepare the order display as follows Prepare the order results list as followsTo start taking measurements AGILENT 35670A Supplemental Operator’s GuideSelecting Measurement Parameters Recalling the Spectra from Non-VolatileRAM Recalling the Spectra from DiskScaling the Displays Using Markers to Compare Section 15 Waterfall Spectra at Time Intervals Setting Up the Waterfall DisplaySelecting Single Channel Operation Selecting Measurement ParametersUsing Slice Markers with Waterfall Data Setting Up Time Step ArmAGILENT 35670A Supplemental Operator’s Guide Section 16 Waterfall Spectra at RPM Intervals Setting Up the TachometerSpecifying the Start RPM Scaling the Display Starting and Pausing a MeasurementAGILENT 35670A Supplemental Operator’s Guide Accelerometer Polarity AGILENT 35670A Supplemental Operator’s Guide Set up triggering on Channel 1 to 5% of rangeAGILENT 35670A Supplemental Operator’s Guide Set up the AGILENT 35670AFor accelerometers with the same polarity For accelerometers with opposite polarityAGILENT 35670A Supplemental Operator’s Guide Set up displaySet up trace coordinates as peak-to-peakmil AGILENT 35670A Supplemental Operator’s Guide AGILENT 35670A Supplemental Operator’s Guide AGILENT 35670A Supplemental Operator’s Guide Preset the AGILENT 35670AConnect the transducers Enter Channel 1 input parametersChoose measurement parameters Set up display parametersAGILENT 35670A Supplemental Operator’s Guide AGILENT 35670A Supplemental Operator’s Guide AGILENT 35670A Supplemental Operator’s Guide Viewing Results Using Real and Imaginary TracesAssessing Measurement Quality AGILENT 35670A Supplemental Operator’s Guide Preset the AGILENT 35670ASet up Trace B to measure velocity in inch/s 0-pk Press the Trace Coord hardkey AGILENT 35670A Supplemental Operator’s GuidePress the Y UNITS softkey F8 Press the XDCR UNIT CONVERT softkey F4AGILENT 35670A Supplemental Operator’s Guide AGILENT 35670A Supplemental Operator’s Guide When the run-upand run-downis completedCharacterizing the External Trigger Specify User Levels for TriggeringAcquire and Display the Trigger Signal Setting Up External TriggerCharacterize the Trigger Signal Set up a non-TTLtrigger as followsAGILENT 35670A Supplemental Operator’s Guide Set up measurement parametersSaving Trace to 3.5” Disk Confirming Contents of 3.5” Disk FileSaving Trace to Non-VolatileRAM NV-RAM Confirming Contents of NV-RAMAGILENT 35670A Supplemental Operator’s Guide To return to the Trace viewRecall Trace Data from Non-VolatileRAM NV-RAM Recall Trace From 3.5” DiskAGILENT 35670A Supplemental Operator’s Guide Section 24 Plotting and Printing Trace Data Generating Output with the AGILENT 35670APlotting the Display AGILENT 35670A Supplemental Operator’s Guide Printing the DisplayCheck the Plot/Print Destination Plot the TraceSection 25 Importing Plots into Microsoft Word Plot to a File Using the AGILENT 35670A Section 28 Precautions to Prevent Loss of Data Measuring Acceleration, Displaying Displacement Converting Frequency Response Units to Compliance Math Functions and XDCR UNIT CONVERTNow display the function F1 on Trace B AGILENT 35670A Supplemental Operator’s GuideAGILENT 35670A Supplemental Operator’s Guide above the track number AGILENT 35670A Supplemental Operator’s GuideSection Section