GPP Series User Manual 
96 
RS-232 
 
The GPP series models can be remotely 
controlled by RS-232 connection. 
Under power-off state, connect RS-232 cable 
and select RS-232 port in the Interface. The 
message USB232 will appear gray in the status 
bar when connection, and turns to white color 
while the first command connects succesfully.  
Panel control will be automatically under lock 
state when connection is successful. 
Press the System button followed by pressing 
the F1 (Interface) button to select the target port: 
F1 (RS-232). The setting of baud rate will appear 
automatically, please then choose desired 
setting.            
The parameter information of RS232 will appear 
on LCD. Refer to the description below: 
 
8 --->data bit 8bit 
N --->no parity bit 
1 --->stop bit 1bit 
N --->no flow control bit