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~10-
ELECTRICAL ADJUSTMENTS AND CHECKS
|
ELUCIDATIONS
[4] Place the top of the response curve in the centre «
|
|
;
|
the screen by displacing the wobbulating frequenc
-
For the HF adjustments, the injected signals should
Adiust for maximum heiaht and symmet
be kept as small as possible.
[2]
3
:
mo
-
Connect the frame aerial in case AM is used.
2
Measuring
point
~
The AM IF amplifier is adjusted with a wobbulator
|
O
si
signal of approx 600 kHz having a sweep of 250 kHz
C) Trimming element
at a rhythm of 50 Hz.
General
Measuring equipment used
_—
Power-supply equipment
-
Qscilloscope
crave;
=
DC millivoltmeter
"=
AC millivoltmeter
wid
-
Frequency counter
FM-AM
ALIGNMENT
|
|
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19kHz MPX
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MDA.02205 -
T28/926
CS 23 970
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