HP 8920A, Руководство пользователя

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Chapter 6, Call Processing Subsystem
Using the ANALOG MEAS Screen
Using the ANALOG MEAS Screen
The ANALOG MEAS screen combines some of the Test Set’s
Audio Analyzer
fields and some of the Test Set’s RF Generator fields onto one screen for the
purpose of testing the audio characteristics of the mobile station. Only those fields
which are pertinent to testing the mobile stations audio characteristics have been
combined onto the ANALOG MEAS screen. The Test Set must be in the
connected state (that is, the
Connect
annunciator is lit) in order to use the
ANALOG MEAS screen.
The mobile station’s speaker output must be connected to the Test Set’s AUDIO
IN connector and the mobile station’s microphone input must be connected to the
Test Set’s AUDIO OUT connector in order to use the ANALOG MEAS screen.
Refer to
figure 17, "Connecting a Mobile Station to the Test Set," on page 119
for
connection information. If the mobile station does not have audio connections the
ANALOG MEAS screen cannot be used.
There are a wide variety of audio measurements which can be made from the
ANALOG MEAS screen. The following examples illustrate how to make a
typical mobile station receiver measurement (RF Sensitivity) and a typical mobile
station transmitter measurement (FM Hum and Noise). Refer to the HP 8920A RF
Communications Test Set Applications Handbook, section “Testing FM Radios”
for further information on using the Test Set’s Audio Analyzer to make audio
measurements.