Multimeter
current, impedance.
10
Audio Signal
Generator
Frequency range
：
2---3000Hz
Output level
：
1---500mV
11
RF
power
Attenuator
Attenuation
：
40dB or 50dB
Supporting power
：
Bigger than 10W
12
Standard
signal source
Frequency range
：
10MHz---1000MHz
Output level
：
0.1uV~32mV (-127dBm~-17dBm)
13
Oscillograph
Frequency range
：
DC~20MHz
Test range
：
10mV~20V
14
Audio
voltmeter
Test range
：
10mV~10V
The equipments in item 6, 7, 8, 10, 11, and 12 can be replaced by a comprehensive test
instrument.
MIC JACK
SPEAKER JACK
PTT/RXD
MIC
5MS
GND
TXD
SP
Figure 1.1 External Speaker/Mic Connector Definition
1.2 Debugging Items
During the course of maintenance, the radio needs to be tested and debugged after
replacing components. Some certain radio parameters can be modified (computer mode)
with our KSP 20 programming software. The modifiable parameters are as follows:
1) Frequency difference
2) TX power
3) Low battery power warning threshold
4) Squelch level
5) CTCSS frequency deviation
6) DCS frequency deviation
Debugging Procedures
a. Enter the computer test mode.
b. Select the “Test Mode” option to enter the computer test mode.
c. Select the options that you want to adjust and adjust the parameters on the
computer.
d. After adjustment, exit the computer test mode.
