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Agilent Technologies Agilent 35670A manual Setting Up the Tachometer, Specifying the Start RPM

Models: Agilent 35670A

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Section 16 : Waterfall Spectra at RPM Intervals

AGILENT 35670A

Supplemental Operator’s Guide

Section 16 : Waterfall Spectra at RPM Intervals

Spectra can be acquired at fixed RPM intervals with RPM STEP ARM. This feature allows spectra to be taken at uniform RPM intervals even during erratic run-ups.

Setting Up the Tachometer

Connect the tachometer signal to the TACH BNC connector on the back of the AGILENT 35670A. Set up tachometer parameters as follows, assuming that the tachometer is a 1 V peak signal with 2 pulses per revolution:

•Press the [Trigger] hardkey.

•Press the [TACHOMTER SETUP] softkey (F8).

•Press the [TACH PULS PER REV] softkey (F8).

•Enter 2 then press the [ENTER] softkey (F1).

•Toggle the [TACH DISP ON OFF] softkey (F6) until ON is highlighted.

Specifying the Start RPM

To set up RPM interval triggering, refer to the preceding section regarding Time Step Arm, then follow these instructions:

•Press the [Trigger] hardkey.

•Press the [ARM SETUP] softkey (F7).

•Select the [RPM STEP ARM] softkey (F3).

•Press the [START RPM] softkey (F6).

•Press 1000 then the [RPM] softkey (F1).

This starts the measurement when 1000 RPM.

•Press the [RPM STEP SIZE] softkey (F7).

•Press 25 then the [RPM] softkey (F1).

This arms the measurement every 25 RPM.

Collecting a Specified Number of Spectra During an RPM Interval

Acquire a specified number of spectra into a waterfall during an RPM run-up using RPM step arm. Divide the total RPM interval by the number of spectra desired during the interval to determine the desired RPM STEP SIZE. For example to measure 15 spectra during an RPM run-up from 1000 RPM to 1750 RPM, select an RPM STEP SIZE of 50 as follows:

•Press the [Trigger] hardkey.

•Select the [ARM SETUP] softkey (F7).

•Select the [RPM STEP ARM] softkey (F4).

•Press the [START RPM] softkey (F6).

•Press 1000 then the [RPM] softkey (F1).

•Press the [RPM STEP SIZE] softkey (F7).

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Agilent Technologies Agilent 35670A manual Setting Up the Tachometer, Specifying the Start RPM

Contents

for the Agilent 35670A Dynamic Signal Analyzer Supplemental Operator’s GuideAGILENT 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 Trac Coord Coord A Inst ModeMeas Data FreqUsing Transducers with External Preamplifiers Using ICP-TypeTransducers with the AGILENT 35670ASection 3 Measuring with Transducers Specifying Transducer Sensitivity and Units Selecting Single Channel Operation Setting Up Transducer Units for DisplacementSelecting Frequency Span Frequency Spans Available for the AGILENT 35670A Quantifying Power Spectrum Results Maximizing Dynamic Range Frequency Zooming to Increase ResolutionSection 5 Improving Measurement Results Averaging to Reduce Measurement Variance AGILENT 35670A Supplemental Operator’s Guide AGILENT 35670A Supplemental Operator’s Guide Selecting Single Channel OperationSelecting Time Record Length Displaying Time WaveformsEvent Triggering Quantifying Time Trace Results Section 7 Measuring Dual Channel Spectra Presetting the AnalyzerSelecting Dual Channel Operation Selecting Frequency SpanUsing Markers with Dual Channel Measurements Coupled Markers Coupled Markers with Peak TrackingDual Channel Averaging Maximizing Dynamic RangeAGILENT 35670A Supplemental Operator’s Guide Selecting Dual Channel Operation Displaying Dual Time WaveformsSection 9 Measuring Dual Channel Time Waveforms Selecting Time Record LengthArming Dual Channel Time Measurements Triggering a Dual-ChannelTime MeasurementTrigger Delay Using Markers with Dual Channel Time Measurements AGILENT 35670A Supplemental Operator’s Guide Setting Up the Transducer Parameters Choosing a Preliminary Frequency Span Setting Up Input RangeSpecifying Trigger Parameters Setting Up Time Displays WAITING FOR CH 1 TRIGGERUsing Force/Response Windows Displaying Hammer Test Results AveragingAGILENT 35670A Supplemental Operator’s Guide Changing Frequency Span Delay = 01.T ForceWidth = T ExponentialDecay = TAGILENT 35670A Supplemental Operator’s Guide Prepare the order display as follows AGILENT 35670A Supplemental Operator’s GuideSection 13 Order Domain Results in List Mode Prepare the order results list as followsAGILENT 35670A Supplemental Operator’s Guide To start taking measurementsSelecting Measurement Parameters Recalling the Spectra from Disk Recalling the Spectra from Non-VolatileRAMScaling the Displays Using Markers to Compare Selecting Single Channel Operation Setting Up the Waterfall DisplaySection 15 Waterfall Spectra at Time Intervals Selecting Measurement ParametersSetting Up Time Step Arm Using Slice Markers with Waterfall DataAGILENT 35670A Supplemental Operator’s Guide Specifying the Start RPM Setting Up the TachometerSection 16 Waterfall Spectra at RPM Intervals Starting and Pausing a Measurement Scaling the DisplayAGILENT 35670A Supplemental Operator’s Guide Accelerometer Polarity Set up triggering on Channel 1 to 5% of range AGILENT 35670A Supplemental Operator’s GuideFor accelerometers with the same polarity Set up the AGILENT 35670AAGILENT 35670A Supplemental Operator’s Guide For accelerometers with opposite polaritySet up trace coordinates as peak-to-peakmil Set up displayAGILENT 35670A Supplemental Operator’s Guide AGILENT 35670A Supplemental Operator’s Guide AGILENT 35670A Supplemental Operator’s Guide Connect the transducers Preset the AGILENT 35670AAGILENT 35670A Supplemental Operator’s Guide Enter Channel 1 input parametersAGILENT 35670A Supplemental Operator’s Guide Set up display parametersChoose measurement parameters AGILENT 35670A Supplemental Operator’s Guide Viewing Results Using Real and Imaginary Traces AGILENT 35670A Supplemental Operator’s GuideAssessing Measurement Quality Set up Trace B to measure velocity in inch/s 0-pk Preset the AGILENT 35670AAGILENT 35670A Supplemental Operator’s Guide Press the Y UNITS softkey F8 AGILENT 35670A Supplemental Operator’s GuidePress the Trace Coord hardkey Press the XDCR UNIT CONVERT softkey F4AGILENT 35670A Supplemental Operator’s Guide When the run-upand run-downis completed AGILENT 35670A Supplemental Operator’s GuideSpecify User Levels for Triggering Characterizing the External TriggerCharacterize the Trigger Signal Setting Up External TriggerAcquire and Display the Trigger Signal Set up a non-TTLtrigger as followsSet up measurement parameters AGILENT 35670A Supplemental Operator’s GuideConfirming Contents of 3.5” Disk File Saving Trace to 3.5” DiskAGILENT 35670A Supplemental Operator’s Guide Confirming Contents of NV-RAMSaving Trace to Non-VolatileRAM NV-RAM To return to the Trace viewRecall Trace From 3.5” Disk Recall Trace Data from Non-VolatileRAM NV-RAMAGILENT 35670A Supplemental Operator’s Guide Plotting the Display Generating Output with the AGILENT 35670ASection 24 Plotting and Printing Trace Data Check the Plot/Print Destination Printing the DisplayAGILENT 35670A Supplemental Operator’s Guide 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 Math Functions and XDCR UNIT CONVERT Converting Frequency Response Units to ComplianceAGILENT 35670A Supplemental Operator’s Guide Now display the function F1 on Trace BAGILENT 35670A Supplemental Operator’s Guide AGILENT 35670A Supplemental Operator’s Guide above the track numberSection Section