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6. Measure the peak AM on the Modulation Ana-
lyzer. Record the AM PK(+) reading on the Test
Record.
7. Press PK(–) on the Modulation Analyzer.
8. Measure the peak AM on the Modulation Ana-
lyzer. Record the AM PK(–) reading on the Test
Record.
9. Compute the actual AM input sensitivity with the
following formula:
%
|
( )| |
(–)|
|
( )| |
(–)|
AM
AM PK
AM PK
AM PK
AM PK
=
´
+ +
+
+ -
100
200
é
ë
ê
ù
û
ú
10. The calculated result should be between 45% and
55% AM. Record this result on the Test Record.
3-30
690XXB/691XXB MM
PERFORMANCE
AMPLITUDE
VERIFICATION
MODULATION TEST
Summary of Contents for 680 C Series
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