GPP Series User Manual 
98 
Connection Usage 
 
This chapter describes how to set and enable port, 
as well as all the required preparations prior to 
operation.  
The GPP series has 2 standard remote control 
ports (RS-232, USB), and 2 optional ports (GPIB, 
LAN). 
It is allowed to control the GPP series by only 
single remote control method once time. Before 
to use, it’s required to select or confirm 
beforehand. 
Press the System button followed by pressing 
the F1 (Interface) button to select the target 
port: F1 (RS-232), F2 (USB), F3 (GPIB), F4 
(LAN). The available ports 
 will 
appear on the LCD. 
The selected port will appear in the status bar 
with font color in gray, for instance 
, whilst 
it will change to white color after successful 
commnad operation.