TR850 Service Manual
3WPT-P26350PH25410P
With dual-plugged flat cable, AWG26#, 2.54 interval,
double flat cable, wire length 350mm, 10P socket.
1—12
3WPT-P26080PH25410P
With dual-plugged flat cable, AWG26#, 2.54
interval, double flat cable, wire length 80mm, 10P
socket, double-headed socket.
17—33
3WPD-160140-1PIN
Connected to ground wire 1Pin, blue wire, 140mm
length,wire size,:16AWG.; two ends with round
terminal
31(ground
terminal)—
machine case
Fan wire Come with fan
11—32
6. Adjustment
During maintenance, the repeater may needs some testing and modulation for technical index after
changing the components.
6.1. Preparation
Please prepare the tools and equipment before testing the DMR repeater:
Integrated tester
PC and CPSp software
AEROFLEX 3920
Spectrum analyzer FSU
Antenna interface converter
Universal interface
6.2. Method of Modulation and Test
6.2.1. Local Oscillator Adjustment
Subject Test Point Test Procedure Standard
12.8M
Clock
base band
board J6
1. Enter test mode “12.8M Clock”.
2. Set HP8921 to TX mode; connect the reference
frequency port to HP8921 RF high power input
port.
3. Enter computer modulation mode.
≤±1Hz
44
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