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Tape Out
Dc
Voltmeter
FM Antenna
Receiver
Terminal (752)
[oe eee
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a
Tuner
Front-End
FM Dummy
Antenna
752
Audio
Generator
FM RFIIF and MPX Alignment Connection
Frequency
Counter
5. MPX Alignment, SM Alignment
Preparation
1. Switch : Press to FM.
2. Tuner for 98 MHz on band.
3. Signal Generator output level : 1000 pV.
4 Deviation : 40 kHz, at 100% modulation of composite signal.
Signal
19 kHz
Generator
Equipment
Adjustment
Adjust
Step | Modulation
Frequency
Connection
Point
for
Level
Setting
Pilot off
Carrier only
Frequency counter
VR803
| 76 kHz
1
connect to TP2 (HOT)
of PCB and ground
8% Mod.
Composite to
AC voltmeter to TAPE
-
Adjust for about
2
channel
OUT jack of R
450mV of audio
1kHz R
channel
output
8% Mod.
Composite to
AC voltmeter to TAPE
VR804
| AC voltmeter reading
3
channel
OUT jack of R
should be at least 40
1kHzb
channel
dB below.
4
8% Mod.
Composite to
AC voltmeter to TAPE
VR804
| Same as Step 3.
channel
1kHzR
| OUT jack of L channel
5
8% Mod.
Composite to
AC voltmeter to TAPE
VR805_ | FL display 'SIG 60 dB'
channel
OUT jackLorR
—
indication on receiver
1kHzLorR
channel
with FM SSG output
lenel of 1000 nV/m
If you could not obtain -40dB readings in Steps 3 and 4 (compared with Step 2), readjust VR804
until you obtain -40dB readings for both Steps 3 and 4, Nominal is -45 dB.
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