HP 8648 A/B/C/D - Changpuak.ch

Phase Modulation
Distortion
Performance Tkst
Connect the Test
Equipment
Configure the
Measuring Receiver
Configure the Audio
Analyzer
Configure the HP 8648
Measure Distortion
0: :
AUDIO ANALYZER
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Phase Modulation Distortion Performance Test
HIGH
7
MODULATION
OUTPUT
MEASURING RECEIVER INPUT 50R
HP 6646 UNDER TEST
OUTPUT
Figure S-10. Phase Modulation Distortion Equipment Setup
1. Reset
2. $M mode
3. Peak+ detector
4. 300 Hz high-pass filter
5. 15 kHz low-pass filter
1. Distortion mode
2. 30 kHz low-pass filter
3. Set low input to ground
1. Turn 4M on; press (YJ CMOD ON/OFF).
2. Set the rate; press [NT).
3. Set the amplitude; press (@KG?XZ) @ (dB(mL).
4. Turn the RF output on; press [RF).
1. Enter the frequencies and deviations shown in the test record.
2. Record the test results and compare the results to the limits in the
test record.
Performance Tests 8-l 5