HP 8920A - SINAD, Distortion, SNR, AF Frequency, DC Level, DC Current; AF Power

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S:\HP892XX\USRGUIDE\manual\opoverv.fb
Chapter 3, Operating Overview
Displaying Measurements
SINAD, Distortion, SNR, AF Frequency, DC Level, DC Current
Selecting the currently-displayed measurement causes the To Screen menu to be
replaced by a list of measurement choices. Select the new choice to replace the old
measurement. These measurements are available in the RX TEST, TX TEST,
DUPLEX TEST, RF GENERATOR, RF ANALYZER, and AF ANALYZER
screens. (Refer to item (4) in
figure 8 on page 57)
The Distortion measurement is only for a 1 kHz tone.
The SINAD measurement is normally shown using an analog-type meter and
small digits, but can be changed to display in large digits only. (See
"To Use the
Analog METER Format" on page 62
.)
DC Current can only be measured using the rear-panel DC CURRENT
MEASUREMENT connections.
1
Selecting SNR (Signal/Noise Ratio) turns off the other audio measurement. For
more information on making this measurement, see the
RF Gen Freq field
description, on page 499
.
AF Power
AF Power is measured in the RX TEST screen by specifying the external load
resistance,
Ext Load R, and changing the unit of measure for the AC Level
measurement to W (Watts), mW, or dBm. (The milliwatt (mW) unit is selected by
pressing SHIFT, ENTER) Refer to item (5)
figure 8 on page 57.
1. Optional on some Test Set models.