Filter
Top Products
9.2 FM
SECTION
1. Through
300 ohm
dummy
antenna, connect
FM signal
generator
to the 300
ohm FM
antenna
terminals
and set for 4OOHz
at
100dB
and
IO0%
modulation.
2.
Connect
AC voltmeter
and distortion
meter
to
TAPE REC
jack
(L
or
R).
3.
Set
FUNCTION
switch
to
FM
and MUTING
switch
to OFF.
4.
Set
FM
signal
generator
and
SX-450 dial
indication
to
point
A
(90MHz).
5.
Adjust T3 for
maximum indication
on
AC
voltmeter.
6. Adjust
T5
lower
core for
center
of scale
indication
on AM/FM meter.
7. Set
FM
signal
generator
for
9dB output
and
adjust
T1
and
T2 for maximum
indication
on
AC
voltmeter.
8.
Set
FM
signal
generator
and
SX-450 dial
indication
to
point
C
(106MHz).
9. Adjust
TC3, then
TC1
and TC2 for
*u"i*rr-
A |
/
indication
on AC voltmeter.
10.
Again set FM
signal
generator
and SX-450
dial
indication
to
point
A.
11.
Adjust
T3, then
T1 and
T2
for
maximum
indication
on
AC voltmeter.
12. Repeat
steps 8-11
to eliminate
variations
in
sensitivity
at
points
A and C.
13. Adjust
"t4
for maximum
sensitivity.
14. Detune
to noise
only
and adjust
T5 lower
core
for center
of scale
indication
on FM
meter.
15.
Set SX-450
dial indication
to
point
B
(98MHz)
and
adjust FM
signal
generator
for
center
of
scale indication
on
AM/FM
meter.
16.
Set FM
signal
generator
output
to 60dB
and
adjust T5 upper
core for
minimum
distortion.
17.
Repeat steps
14-16
eliminate
variation in
mini-
J"
'a
mum
distortion
position.
tl
ACvoltmeter
Distortion
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T2
T1
TC1
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FM
signal
generator
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