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FM Alignment Chart
Instrument &
Frequency
Adjustment
point
Dummy
Input
Output
Dial Setting
Purpose
Terminal
Terminal
FM IF Sweep
Generator and
Generator
Output
Tuning Gang
fully counter-
Adjust for scope
Pattern with specified
EMGIE
oscilloscope or
Probe "A"
clockwise
marker (10.7MHz) as
FM IF genescope
(Lowest Fre.)
illustrated in
Fig. 7 & 8 (note 2, 3)
FM SSG 87MHz
Ant.
Speaker
Generator
Tuning Gang
Adjust for maximum
(400Hz 22.5kHz
Input
Output
Output
fully counter-
gain.
Deviation) and
|
Terminal
Probe ''B''
clock wise
FM
VTVM
(Lowest fre.)
2
ee
FM SSG 109MHz
Ant.
Speaker
Generator
Tuning Gang
(400Hz, 22.5kHz
Input
Output
Output
fully clockwise
Adjust for maximum
Deviation) and
Terminal
Probe ''B''
(Highest fre.)
gain.
VTVM
Repeat the above item 2-(a), (b) for minimum change.
FM SSG
9OMHz (400Hz,
Input
Output
22.5kHz Deviation)
and VTVM
Terminal
Terminal
FM SSG
Ant.
Sepaker
fo
3
FM
Tracking
(400Hz, 22.5kHz
Repeat the above item 3-(a), (b) for minimum change.
Ant.
Generator
Output
Probe ''B"'
Speaker
Tune to signal
4
Adjust for maximum
gain.
Generator
Output
Probe ''B"'
Adjust for
maximum
Tune to signal
TC2
gain,
106MHz
Input
Output
Terminal
Terminal
Deviation) and
VTVM
FM Multiplex Alignment
Frequency counter should read
19 kHz + 0.1 kHz
RV1 (10K-B)
(+)
freq. counter
hig. A
at
lit
Ae
ice tee
aa
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