– 20 –
Adjustment Location : Base main board (see page 21)
RX Section Adjustment
• Perform the adjustment at T3CH (RX : 46.800MHz) as a rule.
1. IF Adjustment
Setting :
Procedure :
1
FM rf signal generator condition :
Carrier frequency
: 46.800MHz
Modulation
: 1kHz
Deviation
: 3kHz
Output level
: –5dB
µ
V (0.562
µ
V) (EMF)
2
Adjust the T202 for the minimum or the –28dBV reading
on the Level meter.
Adjustment Location : Hand main board (see page 21)
2. DET Adjustment
Setting :
Procedure :
1
FM rf signal generator condition :
Carrier frequency
: 46.800MHz
Modulation frequency : 1kHz
Deviation
: 3kHz
Output level: 60dB
µ
V (1mV) (EMF)
2
Adjust the T201 for the maximum reading on the Oscillo-
scope.
Adjustment Location : Hand main board (see page 21)
FM rf signal
generator
TP76 (ANT)
TP8 (GND)
TP58 (IF)
TP8 (GND)
level meter
FM rf signal
generator
TP76 (ANT)
TP8 (GND)
oscilloscope
TP4 (SP)
TP3 (SP)
200
Ω
5-2. HANDSET SECTION
• Apply 4V dc from regulated DC power supply.
• Set to handset manual test mode. (Refer to page 14.)
TX Section Adjustment
1. TX VCO Adjustment
• Perform the adjustments at 25CH (49.970MHz) as a rule.
Setting :
Procedure :
1
The digital voltmeter connected TP6 (TX VCO) to TP8
(GND).
2
Adjust the L51 for 1.95 to 2.05V reading on the digital volt-
meter.
Adjustment Location : Hand main board (see page 21)
2. RX VCO Adjustment
Setting :
Procedure :
1
The digital voltmeter connected TP5 (RX VCO) to TP8
(GND).
2
Adjust the L201 for 2.25 to 2.35V reading on the digital
voltmeter.
Adjustment Location : Hand main board (see page 21)
digital
voltmeter
TP6 (TX VCO)
TP8 (GND)
digital
voltmeter
TP5 (RX VCO)
TP8 (GND)
CH1 DC 500mV/div NORMAL 5mSec/div
CH1
CH1
CH1
DUTY of 50%
DUTY is except 50%
DUTY is except 50%
Summary of Contents for SPP-M100
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