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ADJUSTMENTS
1. TEST & ADJUSTMENT POINT
C
G
A
B
Figure 1.
1
2. FM ADJUSTMENT
Power Supply PRE OUT
GND
(GND)
STEREO SG (BACK UP)
(ACC) VTVM SCOPE
FM SSG UNIT
EXIT ANT Jack.
MODE IN OUT
OUT
AUDIO OSC
Figure 2.
(1) The impedance of FM antenna terminal is 75.
Therefore, connect coaxial cable (3C-2V etc.) between FM SG and antenna terminal when wiring.
Item FM SSG Available Antenna
Attenuator Power Terminal
Type Indication Rato Voltage
Open indication 0dB 5.2dBf 6dB/uV
type 60dB 65.2dBf 66dB/uV
Load or close 0dB 11.2dBf 12dB/uV
indication type 54dB 65.2dBf 66dB/uV
(2) There are two kind in indication of FM SG output attenuator
1) Attenuator with marking of 75 open ... open indication type.
2) Attenuator with marking of 75 load or close ... load or close indication type.
(3) FM SG output level in this FM adjustment are described as open indication type. The left table shows
relations among FM SG attenuator indication (dB), available power ratio (dBf) and antenna terminal voltage
(dB/uV) in each indication type.
NOTE: 1. BAND Switch .................................................................................................................................. FM
2. BALANCE .................................................................................................................................... Center
3. TREB/BASS .................................................................................................................................. Center
4. Connect as shown in figure 2.
5. Refer to figure 1 for Adjustmenu Points.
FEED SIGNAL
STEP SUBJECT MEASURE OUTPUT ADJUSTMENT ADJUST FOR REMARK
FROM TO
98MHz 60dB ANT Jack
Between Point A & Point
1 Discriminator No Dev. or T101 DC 0V