GPD-X303S Series User Manual 
 
 
Note: this diagram shows non-European terminals.
 
3.  Press the CH2 key (LED 
turns on) and then use the 
Current knob to set the CH2 
output current to the 
maximum level (3.0A). 
By default, the Voltage and 
Current knob work in the 
coarse mode. To activate the 
fine mode, press the knob to 
turn the FINE LED on. 
 
 
(Fine control) 
 
 
•  Coarse: 0.1V or 0.1A for each step 
•  Fine: 1mV or 1mA for each step 
 
4.  Press the CH1 key (LED 
turns on) and then use the 
Voltage and Current knob 
to set the output voltage 
and current level. 
 
 
 
5.  To turn on the output, press 
the output key. The key LED 
turns on. 
 
6.  Refer to the CH1 (Master) meter and indicator 
for the output setting level and CV/CC status. 
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