HP 8642A - Page 278

Performance Tests
PROCEDURE:
4-28
Model 8642A/B
PERFORMANCE TESTS
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
MOD
Results
FREO
OUT
Level
Min. Actual Max.
0.020 kHz'
50 mV
46.6 mV 94.8 mY
1.000
kHz'
50 mV
46.6 mV
94.8 mV
100.0 kHz 50 mV 46.6 mV
94.8 mV
0.020
kHz' 3.00V 4.051V
4.433V
1.000
kHz' 3.00V 4.051V
4.433V
100.0 kHz 3.00V
4.051V 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 mdicated on the audio
analyzer is within the specified limits.
MOD
Results
FREO
Min. Actual
Max.
20.0 Hz
19.6
20.4
14.9 kHz 14.60
15.20
15.1 kHz
14.80 15.40
100.0 kHz
98.00
102.0