Realistic PRO-2004 - Page 12

•
Step
Control Setting
Channel Programming
Test
Instrument
Connection
Adjust Remarks
3
OFF/vOLUME control:
ON
SQUELCH control:
Fully counterclockwise
Channel Programming:
CH4
(250 MHz -NFM)
Connect Signal
Generator
to TP1, DC
• •
SSVM to TP2 and TP5
to ground.
(Figure 6)
Tl
T9
Tl0
Tl1
T12
Alignment of NFM/AM 2nd IF
1) Set the Signal Generator frequency
to 48.5 MHz, 0.3 V output (NO
MOD).
2) Adjust Tl, T9, Tl0. Tll to maxi-
mum voltage at TP2.
3) Adjust Tl2 to minimum voltage at
TP2. approx.
0.2V on the DC SSVM.
NOTE: Perform these adjustment
by using the DC SSVM which is able
. to measure to three decimal places
because
of the output voltage of
TP2 is low.
Figure 6
•
•
•
TP1
TP2
•
SIGNAL
UNIT
DCSSVM
GENERATOR
UNDER TEST
'I7
•
TP5
",
,
•
•
Control Setting Test Instrument
Adjust
RemarksStep
•
Channel Programming Connection
•
4 OFF/vOLUME control:
Connect Signal Tl3 Alignment of 455 kHz NFM
ON Generator
to TPl and Discriminator coil
SQUELCH
control:
DC SSVM to TP4.
Set the Signal Generator frequency'to
Fully CCW (Figure 7)
48.5 MHz,
100 jJ.V output (NO MOD)
Channel Programming:
and adjust
T13 for 3.8V (±0.1) on, the
CH4 (250 MHz - NFM)
•
DCSSVM .
•
-
Connect Signal
,
T6
Alignment of 10.7 MHz WFM
.
5 OFF/VOLUME control:
"
Generator to TPl and
•
Discriminator coil
ON
SQUELCH
control: DC SSVM to TP3.
Set the Signal Generator frequency
to
Fully CCW (Figure 7)
48.5 MHz,
100 jJ.V outPut (NO MOD)
Channel Programming:
and adjust
T6 for 3.8V (±0.1) on the
•
CH5 (98 MHz - WFM)
DCSSVM.
Figure 7
TP1
TP30rTP4
SIGNAL
UNIT
DCSSVM
•
UNDER TEST
GENERATOR
.
r
.
"
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-12 -
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