Kirisun DM588 - Page 30

DM588 Service Manual
Item Environment
Measurement Tool and Method
Index Requirement
Test Device
Test Point
Tool
Method
15. Standby Current
1) Power off the radio.
Adjust the output voltage
of the DC power supply
to the standard test
voltage of the radio, and
power the radio using a
standard power cable or
a battery simulator (note
the positive and negative
poles and current-limiting
settings);
2) Power on the radio,
wait until startup alert
tone is heard but before
entering power saving
mode;
3) Make sure GPS and
other modules are
disabled.
DC power supply
Observe the current of the DC power
supply.
< 300mA
Rx Part
Item Environment
Measurement Tool and Method
Index Requirement
Test Device Test Point Tool Method
1. VCO test
Detect VCO voltage in
mode.
Multimeter PC
Program the radio, download audio
source, and switch between low and
high frequencies to test the VCO
voltage.
At low
frequency: >=0.5V;
At high frequency:
<4.5V
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