Adjustment - Alinco DJ-162TD Service Manual

■ ADJUSTMENT

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1. Transmitting Unit [DJ-162TD]
Item
1 : Frequency
adjustment
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2. TX Power
adjustment
3. Modulation degree
adjustment
4. Subaudible tone
O
v . -
5. DTMF.
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2. Receiving Unit [DJ-162TD]
Item
1 . VCO P/D Voltage
adjustment
2. Detection Coil
o adjustment
3. VHF FRONT END
adjustment
!
'
4. S-meter
adjustment
Adjustment Point
Set the unit in the transmission mode at 146.03MHz and
1C304 (RF PCB)
adjustment TC304. '
(Transceiver tester, counter)
VR301 (RF PCB) Adjustment VR301 so that TX power becomes 3W at
146.03MHz.
(Hi Power)
VR302 (RF PCB) Adjustment VR302 so that TX power becomes 300mW at
(Lo Power) 146.03MHz.
VR204 (IF PCB) Input a signal of 1kHz/50mV into The Mic jack
transmitting at 146.03MHz and adjust VR204 so that you
obtain 4.7kHz/Dev in the transmission mode.
VR203 (IF PCB) Adjust 88.5kHz by VR203 so that you obtain 800Hz/Dev.
VR205 (IF PCB) Push Q] in the transmission mode and adjust VR203 so
that you obtain 3.1 kHz/Dev.
Adjustment Pointr
L106 (VCO) Adjust L106 so that P/D voltage is 2.0V at 145.03MHz
(DC Voltmeter) in the transmission mode.
L202 (IF PCB)
Input 1kHz, 3.5kHz/Dev. +66dB/t at 146.05MHz and
adjust L202 so that detection power becomes maximum.
L306, L308, L309,
At 146.03MHz and adjust LB06, LB08, L309, TC305, L311,
1C305, L311, L312
and L312, so that 12dB SINAD sensitivity becomes
(RF PCB)
maximum.
VR202 (IF PCB) , Input a signal of 1 0d B/tfrom transceiver tester at
146.03MHz Turn VR202 so that Fuli-bar begins to tight.
Adjustment Method
Adjustment Method
Spec
146.03MHz ±50Hz
3.0W±0.1W
300mW±50mW
4.7kHz±0.1kHz
800Hz±100Hz
3.1kHz±0.1kHz
Spec
2.0V
under - 9dB^
(EMF) •
10dB/i ± 1dB/t
(EMF)