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ADJUSTMENT
2.2 FM TRACKING ADJUSTMENT
® Connection Diagram (Shown in Fig. 3.)
¢ To Adjust
SSG Frequency
Pointer Position
Adjustment Point
Note
|. 1. 87.5MHz (400Hz, 100% modulation),
as
:
i
output level 8 dB (:V)
Minimum
L3
87.5MHz can be received
2. 108MHz (400Hz, 100% modulation),
:
:
output level 8 dB (uV)
Maximum
TC3
108MHz can be received
| 3, Repeat items (1) and (2) alternately so that brodcast can be received at the frequency between 87.5MHz and 108MHz.
4
1
L
|
6. Repeat items (4) and (5) alternately so that the mV meter indicates maximum output.
[
|
9
j
output level 5 dB (uV)
2.3 FM MPX ADJUSTMENT
¢ Connection Diagram
FM
PLL UNIT
mV Meter
o
Frequency
Counter
oo
]
Ko}
9}
|e
100k Q
i
Pin t3(TPy
Oscitloscope
Ed
|
|
|
pea
RE Rbipe may eee
|
ue
lo
:
¢ To Adjust
1. Select the band switch to AUTO position.
2. Obtain non-modulation signal by setting SSG output at
60 dB (nV) 98MHz. Adjust VR3 so that the frequency
counter indicates 19kHz+30Hz.
3. Obtain stereo modulation signal by setting SSG output
at 60 dB (uV). Adjust VR1 to secure maximum separa-
tion.
;
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