Adjustments Model
8901B
Adjustment
15
AM
SENSITIVITY
Service
Sheet
12
Description
The
AM
sensitivity
is
adjusted for
a
calibration Eactor of
100%
while the Modulation Analyzer
measures the output
of
its
AM
calibrator.
Procedure
1.
Perform
Adjustment
14
-
AM
Calibrator.
2.
Connect the CALIBRATION
AMLFM
OUTPUT to
the
INPUT. (The CALIBRATION
AM/FM
OUTPUT can be connected either to
a
sensor module or directly
to
the Modulation Analyzer's
INPUT.)
NOTE
For
best accuracy, allow the Modulation Analyzer to warm
up
for
at least
one-half
hour.
3.
Press
AM
then
CALIBRATE.
Allow
at
least two readings (approximately
40
seconds) to
pass,
then adjust
A2R6
(AM
SENS)
for
a
display
of
99.95
to
100.05%.
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