GPP Series User Manual 
100 
Perform the following query: 
*IDN? 
The unit will return the manufacturer, model, 
serial number and software version. 
GW INSTEK, GPP-3323,  SN: xxxxxxxx, Vx.xx 
Disable Remote 
Control Mode 
  Send a remote command Local from the PC. 
  Long-press the F6 (unlock) key on the front 
panel.  
 Warning: RS-232 is Not hot-plug device. 
Please proceed to the connection procedure 
under the power-off state. 
USB 
 
GPP can be connected via USB using the USB 
Communications Device (CDC) class. 
Rear panel USB slave port. 
Install the USB driver provided by suppiler in 
PC.