Distortion Test - HP 4935A Operating And Service Manual

Model 4935A

4-23. Distortion Test

HP 6234A Dual Output Power Supply
HP 8903A Audio Analyzer
4 kHz Low Pass Filter (included in Diagnostic Service Kit)*
20 dB amplifier (included in Diagnostic Service Kit)*
2 310 to BNC adapter
2 BNC to BNC test cables
Connect equipment as shown in Figure 4-11.
1.
2 .
POWER
DISPLAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NOR . . . . . . . . . . . . . . . . . . . . . . . . . . press in
SET UP
MEASIJREMENT
Set the Audio Analyzer to measure distortion in dB. The input should be floating.
4. Enable the 30 kHz low pass filter on the Audio Analyzer.
Measure distortion at the following points.
PERFORMANCE TESTS
M O D E L 4 9 3 5 A
Figure 4-l 1. Distortion Test
. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . LEVEL FREQUENCY
FREQUENCY OUTPUT
100 H z
4000
H z
AUDIO ANALYZER
press in TRMT 60011
LEVEL DISTORTION
0 d B m
0 d B m
Performance Tests
ON
TRMT
4-21