HP 8904A - Page 232

Model 8904A Performance Tests
3. Set the audio analyzer to measure distortion in dB. On the Multifunction Synthesizer, set the
amplitude and frequency as listed in the following table.
Also, set the low-pass filter on the audio
analyzer
as listed. For each setting, the distortion read on the audio analyzer should be within
the limits shown.
Analyzer Low-Pass
Filter
(kHz)
30
80
80
750(l)
750(')
30
30
30
80
80
750(l)
750(')
30
30
80
80
750(l)
750(l)
Multifunction Synthesizer Settings
Frequency (Hz)
300
7 500
20 000
20 000
100 000
30
300
7 500
7
500
20 000
20 000
100 000
20
7 500
7 500
20 000
20 000
100 000
Amplitude (Vrms)
10
10
10
10
10
1
1
1
1
1
1
1
0.14
0.14
0.14
0.14
0.14
0.14
Distortion Limits (dB)
- 60
-63
-63
-55
- 55
-46
-60
-63
-63
-63
- 55
- 55
- 63
-63
-63
- 63
- 55
- 55
(l) On an HP 89038 a 750 kHz low-pass filter is selected when the other lowpass filters are off.
Performance Test 6 4-21
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com