Agilent Technologies 8935 Series, Руководство пользователя

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Chapter 8 199
Performance Tests
AF Generator Residual Distortion Performance Test 10
AF Generator Residual Distortion
Performance Test 10
The purpose of this test is to verify that the Test Set meets the
specification limits in PTR (Performance Test Record)
Table 9-10, “AF
Generator Residual Distortion Test 10 Record,” on page 259 . Audio
distortion is measured directly with an audio analyzer.
Figure 8-15 Setup
Procedure
1. On the audio analyzer:
a. Reset the instrument.
b. Select the 80 kHz low-pass filter.
c. Set the measurement mode to distortion.
2. On the Test Set:
a. Press
Preset
.
b. Select the RF GENERATOR screen.
c. Set the
AFGen1 To
and
AFGen2 To
fields to Audio Out.
3. On the Test Set for Audio Frequency Generator 1 do the following:
a. Set the
AFGen2 To
level field to Off.
b. Set the audio frequency and level as shown in the Performance
Test Record (PTR) and measure the audio distortion. Compare
the measured distortion to the limits.
4. On the Test Set for Audio Frequency Generator 2 do the following:
a. Set the
AFGen1 To
level field to Off and
AFGen2 To
level field to
on.
b. Set the audio frequency and level as shown in the PTR and
measure the audio distortion. Compare the measured distortion
to the limits.
INPUT
AUDIO OUT
Audio Analyzer