HP 8924E, Сборка

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Chapter 5, HP 8924C Performance Verification
AF Analyzer AC Voltage Accuracy Performance Test 14
N:\mkt\MANUALS\HP8924C\ALR\24c_pt.fb
Procedure
1. Access the AF ANALYZER screen.
2. Set the
AF ANL In
field to
Audio In.
3. Set
Filter 1
to
<20 Hz HPF
, and
set Filter 2
to
>99 kHz LP
.
4. Set the
De-Emphasis
field to
Off
.
5. Set the
Detector
field to
RMS
.
6. Set the
Settling
field to
SLOW
for frequencies < 200 Hz.
7. Set the audio analyzer’s source to the frequencies and levels shown in the PTR ( see
"AF Analyzer AC Voltage Accuracy Performance Test 14" on page 335 ), adjust the
level until the DVM reads the correct level.
8. Measure the ac level on the Test Set.
9. Compare the measured ac level to the limits shown in the PTR.
AF Anl In
Filter 1
De-Emphasis
Detector
To Screen
TX Frequency
TX Power
AF ANALYZER
AC Level
Filter 2
Settling
Pk Det To
Speaker Vol
Speaker ALC
Scope To
Gain Cntl
Input Gain
Notch Gain
Notch Freq
De-Emp Gain
Audio In Lo
Ext Load R
DC Current
AF Cnt Gate
Select Audio In
Select Filter 1 (<20 Hz HPF) Select Filter 2 (>99 kHz LP)
Select Slow (Freq <200 Hz)
Actual AC Measurement
Select RMS
Select Off