HP 8642A Operating Manual page 260

Performance Tests Model 8642A/B
PERFORMANCE TESTS
PROCEDURE: Setup
1. Connect the instruments as shown in Figure 4 - 7 . Preset the HP 8642
and audio analyzer. Set the audio analyzer filters off.
2. Level Accuracy
Set the HP 8642 modulation frequency and modulation output level
to the values given in the table below. Verify that the readings are
within the specified limits.
MOD
FREQ
0.020 kHz*
1.000 kHz*
100.0 kHz
0.020 kHz*
1.000 kHz*
100.0 kHz
MOD
OUT
Level
50 mV
50 mV
50 mV
3.00V
3.00V
3.00V
Results
Min.
46.6 mV
46.6 mV
46.6 mV
4.051V
4.051V
4.051V
Actual Max.
94.8 mV
94.8 mV
94.8 mV
4.433V
4.433V
4.433V
*Use the audio analyzer 30 kHz low pass filter at these points.
3. Frequency Accuracy
Set the HP 8642 modulation frequency to the values given in the
table below and verify that the frequency indicated on the audio
analyzer is within the specified limits.
MOD
FREQ
20.0 Hz
14.9 kHz
15.1 kHz
100.0 kHz
Results
Min.
19.6
14.60
14.80
98.00
Actual Max.
20.4
15.20
15.40
102.0