Kirisun DR600 Service Manual

DR600 Service Manual
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.
4. Adjust to 12.8MHz±1Hz.
≤±1Hz
Rx
localoscilla
tor power
Rx board
test point
TP3005
1. Enter test mode “Receiver BPF”.
2. Set HP8921 to TX mode.
3. Connect the TP3005 test poit on the RX board
to HP8921RF high power input port.
4. Check the frequency: (Rx frequency
-51.65MHz)±100Hz; output power ＞10dBm.
Frequnency
tolerance≤±
200Hz
Output power＞
10dBm
Tx central
frequency
&power
Tx module
J200
1. Enter test mode “Low Freq.Mod Deviation”.
2. Set HP8921 to TX mode.
3. Connect Tx module RF output to HP8921 RF
high power input port.
4. 4. Adjust to :±100Hz, Check: output power＞
15dBm.
Frequency
tolerance≤±
200Hz
Output power＞
15dBm
40

Kirisun DR600 Specifications

General

Brand	Kirisun
Model	DR600
Category	Repeater
Language	English