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Agilent Technologies Agilent 35670A Setting Up Input Range, Choosing a Preliminary Frequency Span

Models: Agilent 35670A

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AGILENT 35670A

Supplemental Operator’s Guide

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

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

•Select the [g] softkey (F2).

Setting Up Input Range

Use CH* AUTO UP ONLY as the autorange routine as follows:

•Press the [Input] hardkey.

•Press [ALL CHANNELS] softkey (F2).

•Select the [CH* AUTO UP ONLY] softkey (F5).

Then tap the structure with the hammer once. A yellow overload light by the input BNC connectors will indicate an overload, and the range will increase one step. Continue tapping on the structure, one tap at a time, allowing time for the input range to increase, until an overload is no longer indicated. This may take many hammer strikes. When an overload on either channel is no longer indicated, then the ranges are set correctly.

Choosing a Preliminary Frequency Span

Setting up a frequency response measurement is an interative process. A span is selected, a measurement is made, and the results are examined to determine if a narrower or wider span is required. To start measuring frequency response, you must select an initial span:

•Press the [Freq] hardkey.

•Enter 1600 and then press the [Hz] softkey (F2).

Note: span should be any frequency that encompasses all modes of interest. If in doubt, start with a wider span.

Specifying Trigger Parameters

Hammer testing is triggered by the signal from the hammer. Without a force transducer, the trigger must come from the accelerometer that is attached to the hammer and connected to Channel 1. To set up a Channel 1 trigger, follow these steps:

•Press the [Trigger] hardkey.

• Press the [CHANNEL 1 2 3 4] softkey (F3) until 1 is highlighted.

•Press the [TRIGGER SETUP] softkey (F6)

•Press the [CHANNEL LEVEL] softkey (F1)

•Enter 5 then press the [PERCENT (%)] softkey (F4)

•Press the [SLOPE POS NEG] softkey (F5) until POS is highlighted.

•Press the [Trigger] hardkey.

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Agilent Technologies Agilent 35670A manual Setting Up Input Range, Choosing a Preliminary Frequency Span

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 ICP-TypeTransducers with the AGILENT 35670A Using Transducers with External PreamplifiersSection 3 Measuring with Transducers Specifying Transducer Sensitivity and Units Setting Up Transducer Units for Displacement Selecting Single Channel OperationSelecting Frequency Span Frequency Spans Available for the AGILENT 35670A Quantifying Power Spectrum Results Frequency Zooming to Increase Resolution Maximizing Dynamic RangeSection 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 Setting Up Input Range Choosing a Preliminary Frequency SpanSpecifying 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 Setting Up the Tachometer Specifying the Start RPMSection 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 display Set up trace coordinates as peak-to-peakmilAGILENT 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 parametersSet up display parameters AGILENT 35670A Supplemental Operator’s GuideChoose measurement parameters AGILENT 35670A Supplemental Operator’s Guide Viewing Results Using Real and Imaginary Traces AGILENT 35670A Supplemental Operator’s GuideAssessing Measurement Quality Preset the AGILENT 35670A Set up Trace B to measure velocity in inch/s 0-pkAGILENT 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 Generating Output with the AGILENT 35670A Plotting the DisplaySection 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