copyright 2010 itri 工業技術研究院 1 agilent 35670a operator’s guide different types of...

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Copyright 2010 ITRI工業技術研究院

Agilent 35670A Operator’s Guide

Different types of measurement.

• Rotating Machinery

• Structures(FRF)

• Sound/Acoustics

• Spectra and Networks

• Control Systems

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• HP 35670A (Front Panel)

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Spectrum Analyzer

• Initialize the analyzer- [Preset]• [Inst Mode]-FFT Analysis, channels• [Meas Data] [Active Trace]- selecting which type of data you w

ant to display ,PWR SPEC,LIN SPEC,TIME CHANNEL(1),• [Freq] –span measurements, resolution, record length• [Input] – Measurement parameters affect the way the analyzer take

s input data, RANGE,FRONT END CH1 SET UP, XDCR UNIT CH1 SET UP

grounded/floating input coupling ac/dc

anti-alias filter on/off autoranging on/off

A-weight filter on/off ICP power supply on/off

Sensitivity on/off

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• [Window]- Selecting a windowing function, HANN, FLAT TOP, U

NIFORM,FORCE EXPO, FORCE EXPO SETUP

• [Trigger]- Selecting a triggering function, Free Run Trigger, External Trigger, Channel Trigger, Source Trigger, GPIB Trigger

• [Avg]- average on/off, number averages, average type,fast avg on/off, update rate, repeat on/off, overlap %, overload rej on/off, average preview off/manual/time

• [Source]-source on/off, level, dc offset,

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• [Trace Coord]-Linear Magnitude, Log Magnitude, db Magnitude, phase, wrapped phase, x units,Y units

• [Analysis]- define function, define constant, data edit, curve fit, synthsis

• [Scale]- autoscale on/off, match Y scale, axes scale markers

• [Disp Format]- single, upper/lower, front/back, upper/big lower, quad, measurement state, waterfall setup

• [Marker]- marker on/off, coupled on/off, peak trk on/off

• [Marker Fctn]- harmonic marker, band marker, sideband marker , freq & damping

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Measuring Rotating Machinery

1. Initialize the analyzer.• Press [Preset] [DO PRESET].• Press [Inst Mode] [FFT ANALYSIS].• Press [CHANNELS 1 2] (or [CHANNELS 1 2 4]) Press [Meas Data], then pr

ess [CHANNEL 1 2] (or [CHANNEL 1 2 3 4]) to highlight the channel whose transducer you will calibrate.

• Press [PWR SPEC CHANNEL x].2. Match the active trace’s display unit to the calibrator’s output unit.• Press [Input], then press [CHANNEL 1 2] (or [CHANNEL 1 2 3 4]) to highlig

ht the channel whose transducer you will calibrate.• Press [XDCR UNIT CHx SETUP] [XDCR UNIT LABEL], then press the softk

ey corresponding to your calibrator’s output unit. • Press [Input] [XDCR UNIT CHx SETUP], then press [XDCR UNIT ON OFF]

to highlight ON.• Press [Trace Coord] [Y UNITS] [EU].• Press [AMPLITUDE PK PP RMS].

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3. Connect the transducer’s output cable to the analyzer as described at the beginning of this chapter, then secure the transducer to the calibrator.

4. Specify the measurement parameters.• Press [Freq] [SPAN], then press the down-arrow key if you want to reduce t

he frequency span.• Press [Window] [FLAT TOP] to maximize amplitude accuracy.5. Press [Scale], then press [AUTOSCALE ON OFF] to highlight ON.6. Turn on the calibrator, then press [Start].7. After the display has been updated at least once, move the marker to the cal

ibrator’s output frequency and enter calibrator’s output amplitude.8. Press [Marker] [MARKER TO PEAK].• Press [Input] [XDCR UNIT CHx SETUP] [CAL VALUE AT MARKER], then t

ype the calibrator’s specified output amplitude and press [ENTER].

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Measuring Structures(FRF)

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1. Initialize the analyzer.• Press [Preset] [DO PRESET].• Press [Active Trace] [A B].• Press [Meas Data] [FREQ RESP 2/1].2. Connect the device-under-test (DUT) as shown in the illustration below.3. Specify the measurement parameters.• Press [Freq] [START] <number> <unit>, then press [STOP] <number> <unit>.• Press [Input].• Press [CHANNEL 1 2 3 4] to highlight 1.• Press [CHANNEL 1 RANGE] <number> <unit>.• Press [CHANNEL 1 2 3 4] to highlight 2.• Press [CHANNEL 2 RANGE] <number> <unit>.• Press [Window] [FORCE EXPO].• Press [FORC EXPO SETUP].• Press [CHANNEL 1 FORC EXPO] to highlight FORC.• Press [FORCE WIDTH] <number> <unit>.• Press [CHANNEL 2 FORC EXPO] to highlight EXPO.• Press [EXPO DECAY] <number> <unit>.

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4. Specify the triggering and averaging parameters.• Press [Trigger] [CHANNEL 1 2 3 4] to highlight 1.• Press [TRIGGER SETUP] [CHANNEL LEVEL] <number> [PERCENT %]• Press [CHANNEL 1 DELAY] [+/-] <number> <unit>.• Press [CHANNEL 1 2 3 4] to highlight 2.• Press [CHANNEL 2 DELAY] [+/-] <number> <unit>.• Press [Avg], then press [AVERAGE ON OFF] to highlight ON.5. Configure the display.• Press [Trace Coord] [X-AXIS LIN LOG] to highlight LIN.• Press [Active Trace] [B].• Press [Trace Coord] [PHASE].• Press [Active Trace] [A B].• Press [Scale], then press[AUTOSCALE ON OFF] to highlight ON.6. Measure the DUT.• Press [Start].• Slowly tap the device 10 times with the impact hammer at or near the accele

rometer.

copyright 2010 itri 工業技術研究院 1 agilent 35670a operator’s guide different types of...

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