Alinco DJ-160T Service Manual page 13

1. Transmitting Unit (DJ-460E)
Item
I 1. Frequency
adjustment
I
! • 2. TX Power
adjustment
u
I
u
3. Modulation degree.
adjustment
I.
4. Subaudible tone
f = o
I,
5. DTMF.
-
2. Receiving Unit (DJ-460E)
Item
- ....
■ „ i
1. VCO P/D Voltage
adjustment
c
:
2. Detection Coil
adjustment
3. UHF FRONT END
adjustment
4. S-meter
adjustment
All manuals and user guides at all-guides.com
Adjustment Point
TC307 (RF PCB) Set the unit in the transmission mode at 435.03MHz and
adjustment TC307.
(Transceiver tester, counter)
VR301 (RF PCB): Adjustment VR301 so that TX power becomes 3.1W at
(Hi Power) 435.03MHz.
VR302 (RF PCB)
Adjustment VR302 so that RX power becomes 300mW at
435.03MHz.
(Lo Power)
VR204 (IF PCB) Input a signal of 1kHz/50mV into The Mic jack
transmitting at 435.03MHz and adjust VR204 so that you
obtain 4.7kHz/Dev in the transmission' mode. ,
VR203 (IF PCB) Transmit at-435.03MHz and adjust VR203 to obtain a
frequency moduration of 3.0kHz, making sure that tone
burst 1750Hz within a range of 1750H z±20H z.i' -
VR205 (IF PCB)
Push Q] in the transmission mode and adjust VR205 so:
thatyou obtain 3.1 kHz/Dev.
Adjustment Point
\ ' ~
T X -L105 Adjust L105 so that P/D Voltage"is 0.8V at 430.00MHz
(DC Voltmeter) in the transmission mode.-
RX—L103 £ Adjust L103 so that P/D Voltage is 1.3V at 430.00MHz
(DC Voltmeter) in the reception mode.
L202 (IF PCB) Input 1kHz, 3.5kHz/Dev. +66dB/* at 435.03MHz and
adjust L202 so that detection power becomes m ^i'rnum.
TC301, TC302, At 435.03MHz and adjust TC301, TC302', TC303, L305
TC303, L305, L306 and L306, so that 12dB SINAD sensitivity becomes-
maximum.
VR202 (IF PCB) Input a signal of +6dB^i from transceiver tester at.
435.03MHz Turn VR202 so that Full-bar begins to right.
-
Adjustment Method
- -
................
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i
;
, ......
... Adjustment Method
: i
1 7
-
Spec
435.03MHz± 50Hz
3.1W±0.1W
300mW±50mW
... ......
-
_x
4.7kHz ±0.1 kHz
,'$■;
3.0kHz ± 0.5kHz
: 'r
. 3.1kHz ± 0.1kHz
~ "
■
..Spec
^ : ;
0.8V ± 0.3V .
'
1.3V ± 0.1V
under - 9dB^
+6dB/t±1dB/t
■