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Agilent Technologies Agilent 35670A Presetting the Analyzer, Selecting Dual Channel Operation

Models: Agilent 35670A

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Section 7 : Measuring Dual Channel Spectra

AGILENT 35670A

Supplemental Operator’s Guide

Section 7 : Measuring Dual Channel Spectra

This section contains procedures for setting up and measuring a dual channel spectrum using an AGILENT 35670A Dynamic Signal Analyzer. Procedures are similar to those in the section “Measuring Single Channel Spectrum,” however display setup and results are different and will be described here.

To set up the analyzer for a dual channel spectrum measurement, proceed as follows:

Presetting the Analyzer

•Press the green [Preset] hardkey

•Press [DO PRESET] softkey (F1).

•Press the [Pause/Cont] hardkey if desired.

Selecting Dual Channel Operation

Measure two signals with the default two-channel instrument mode. If the analyzer has been changed to 1 or 4 channel operation, then follow these steps:

•Press the [Inst Mode] hardkey

•Press [CHANNELS 1 2 4 ] softkey (F7) until 2 is highlighted.

Selecting Frequency Span

Reduce the span to 800 Hz as follows:

•Press the [Freq] hardkey

•Enter 800 and then press the [Hz] softkey (F2)

Displaying Dual-Channel Power Spectrum Measurements

To see the results of a dual-channel measurement, the analyzer’s display format must be changed to display two traces. Proceed 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.

•	Press the	[CHANNEL 1 2 3 4] softkey (F1) until 1 is highlighted.
•	Press the	[PWR SPEC CHANNEL 1] softkey (F3)

•Press the [Scale] hardkey.

•Toggle the [AUTOSCALE ON OFF] softkey (F1) until ON is highlighted.

•Press the [Active Trace] hardkey again.

•Press the [B] softkey (F2).

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Agilent Technologies Agilent 35670A Presetting the Analyzer, Selecting Dual Channel Operation, Selecting Frequency Span

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 Freq Inst ModeMeas Data Trac Coord Coord AUsing 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 Selecting Single Channel Operation AGILENT 35670A Supplemental Operator’s GuideDisplaying Time Waveforms Selecting Time Record LengthEvent Triggering Quantifying Time Trace Results Selecting Frequency Span Presetting the AnalyzerSelecting Dual Channel Operation Section 7 Measuring Dual Channel SpectraUsing Markers with Dual Channel Measurements Coupled Markers with Peak Tracking Coupled MarkersMaximizing Dynamic Range Dual Channel AveragingAGILENT 35670A Supplemental Operator’s Guide Selecting Time Record Length Displaying Dual Time WaveformsSection 9 Measuring Dual Channel Time Waveforms Selecting Dual Channel OperationTriggering 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 Choosing a Preliminary Frequency Span Setting Up Input RangeSpecifying Trigger Parameters 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 Prepare the order results list as follows AGILENT 35670A Supplemental Operator’s GuideSection 13 Order Domain Results in List Mode Prepare the order display 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 Selecting Measurement Parameters Setting Up the Waterfall DisplaySection 15 Waterfall Spectra at Time Intervals Selecting Single Channel OperationUsing Slice Markers with Waterfall Data Setting Up Time Step ArmAGILENT 35670A Supplemental Operator’s Guide Specifying the Start RPM Setting Up the TachometerSection 16 Waterfall Spectra at RPM Intervals 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 rangeFor accelerometers with opposite polarity Set up the AGILENT 35670AAGILENT 35670A Supplemental Operator’s Guide For accelerometers with the same 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 Enter Channel 1 input parameters Preset the AGILENT 35670AAGILENT 35670A Supplemental Operator’s Guide Connect the transducersAGILENT 35670A Supplemental Operator’s Guide Set up display parametersChoose measurement parameters AGILENT 35670A Supplemental Operator’s Guide AGILENT 35670A Supplemental Operator’s Guide Viewing Results Using Real and Imaginary TracesAssessing 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 XDCR UNIT CONVERT softkey F4 AGILENT 35670A Supplemental Operator’s GuidePress the Trace Coord hardkey Press the Y UNITS softkey F8AGILENT 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 TriggeringSet up a non-TTLtrigger as follows Setting Up External TriggerAcquire and Display the Trigger Signal Characterize the Trigger SignalAGILENT 35670A Supplemental Operator’s Guide Set up measurement parametersSaving Trace to 3.5” Disk Confirming Contents of 3.5” Disk FileTo return to the Trace view Confirming Contents of NV-RAMSaving Trace to Non-VolatileRAM NV-RAM AGILENT 35670A Supplemental Operator’s GuideRecall Trace Data from Non-VolatileRAM NV-RAM Recall Trace From 3.5” DiskAGILENT 35670A Supplemental Operator’s Guide Plotting the Display Generating Output with the AGILENT 35670ASection 24 Plotting and Printing Trace Data Plot the Trace Printing the DisplayAGILENT 35670A Supplemental Operator’s Guide Check the Plot/Print DestinationSection 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