How often should the power supply be calibrated? 
 
The PSU should be calibrated by an authorized service center at 
least every 2 years. For details regarding calibration, see your local 
dealer or GWInstek at www.gwinstek.com / 
marketing@goodwill.com.tw. 
The OVP voltage is triggered earlier than expected. 
 
When setting the OVP voltage, take into account the voltage drop 
from the load cables. As the OVP level is set from the output 
terminals and not the load terminals, the voltage at the load 
terminals may be slightly lower. 
Can I combine more than 1 cable together for the output 
wiring? 
 
Yes. Cables can be used together (in parallel) if the current capacity 
of a single cable is insufficient. However the withstand voltage 
should also be taken into account. Ensure the cables are twisted 
together and are the same length.