Adjustments Model 890211
Resistance
(kn)
HP
Part Number
26.1 0698-31 59
28.7 0698-3449
31.6 0698-5446
34.8 0757-0123
38.3 0698-31 61
-
Adjustment
9-FM
Calibrator
REFERENCE
Service Sheet 29.
DESCRIPTION
The FM calibrator
is
set
to
CW and
its
frequency
is
adjusted while being monitored
by
the internal
counter. The calibrator
is
then set
to
modulate, and the symmetry
is
adjusted
as
the demodulated
signal is measured with the peak+ and peak- detectors. The computed peak deviation
is
checked and
if
out of limits, a resistor is changed
to
bring the deviation within the proper limits.
NOTE
This
calibration adjustment
is
not critical. Built-in safeguards minimize
the
possibility of erroneow Calibration. If conditions exist that are
out
of
calibration, the Measuring Receiver
displays
an error message.
5-16 Adjustment 9-FM Calibrator
rev.15OCT88
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