HP 8924E, Assembly

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Chapter 5, HP 8924C Performance Verification
AF Analyzer Frequency Accuracy to 100 kHz Performance Test 18
N:\mkt\MANUALS\HP8924C\ALR\24c_pt.fb
Procedure
1. Access the AF ANALYZER screen and set the
AF Anl In
field to
Audio In
.
2. Set the lower-right display to
AF Freq
.
3. Set
Filter 1
to
<20
and set
Filter 2
to
>99 Hz LP
.
4. Set the lower-right measurement display to
AF Freq
.
5. Set the audio analyzer’s source amplitude to 1 V, and the frequency to the frequencies
shown in the PTR ( see "AF Analyzer Frequency Accuracy to 100 kHz Performance
Test 18" on page 340 ), adjust until the audio frequency counter reads the correct
frequencies.
6. Read the AF frequency on the measuring receiver and compare the reading 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 2 (>99kHz LP)
Select AF Freq
Actual Results
Select Filter 1
(<20Hz HPF)