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Agilent Technologies Agilent 35670A Displaying Dual Time Waveforms, Selecting Time Record Length

Models: Agilent 35670A

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Section 9 : Measuring Dual Channel Time Waveforms

AGILENT 35670A

Supplemental Operator’s Guide

Section 9 : Measuring Dual Channel Time Waveforms

This section contains procedures for setting up and measuring a single channel time waveform using an AGILENT 35670A Dynamic Signal Analyzer. Included are steps to select single channel operation, set up the trace time length, and set up triggering to capture a transient event. Instructions will also be presented to scale the time trace.

Selecting Dual Channel Operation

To measure a single-channel spectrum, turn on the AGILENT 35670A. The default instrument mode is dual-channel operation.

Note: if the AGILENT 35670A was already turned on and in an unknown state, then preset the analyzer by doing the following:

•Press the green [Preset] hardkey.

•Press [DO PRESET] softkey (F1).

This always returns the analyzer to dual-channel operation.

Selecting Time Record Length

Time record length can be entered directly or indirectly. It is entered directly under the [Freq] hardkey as follows (this example sets up a 0.25 second time record):

•Press the [Freq] hardkey

•Press the [RECORD LENGTH] softkey (F8)

•Enter 0.25 and then press the [S] softkey (F1)

Time record length can also be specified indirectly by entering frequency and resolution in lines. The relationship between time record length (T), lines of resolution (N), and frequency (F) is:

T = N (1024.F )

For 400 lines of resolution (default) and 1600 Hz span, the time record length should be 400/(1.024*1600) ≈ 0.25 seconds. The table showing the relationship between lines, span, and time record length can be found in the section on Single Channel Time Waveforms.

Displaying Dual Time Waveforms

Dual time waveforms can be shown in the UPPER/LOWER display format, with AUTO SCALE turned ON, as follows:

•Press the [Disp Format] hardkey.

•Press the [UPPER/LOWER] softkey (F3).

•Press the [Active Trace] hardkey.

•Press the [A] softkey (F1)

•Press the [Meas Data] hardkey.

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Agilent Technologies Agilent 35670A manual Displaying Dual Time Waveforms, Measuring Dual Channel Time Waveforms

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 Inst Mode Meas DataTrac Coord Coord A 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 Presetting the Analyzer Selecting Dual Channel OperationSection 7 Measuring Dual Channel Spectra 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 Displaying Dual Time Waveforms Section 9 Measuring Dual Channel Time WaveformsSelecting Dual Channel Operation 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 AGILENT 35670A Supplemental Operator’s Guide Section 13 Order Domain Results in List ModePrepare the order display as follows 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 Setting Up the Waterfall Display Section 15 Waterfall Spectra at Time IntervalsSelecting Single Channel Operation 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 GuideSet up the AGILENT 35670A AGILENT 35670A Supplemental Operator’s GuideFor accelerometers with the same polarity 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 Preset the AGILENT 35670A AGILENT 35670A Supplemental Operator’s GuideConnect the transducers 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 AGILENT 35670A Supplemental Operator’s Guide Press the Trace Coord hardkeyPress the Y UNITS softkey F8 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 TriggerSetting Up External Trigger Acquire and Display the Trigger SignalCharacterize 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” DiskConfirming Contents of NV-RAM Saving Trace to Non-VolatileRAM NV-RAMAGILENT 35670A Supplemental Operator’s Guide 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 Printing the Display AGILENT 35670A Supplemental Operator’s GuideCheck 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 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