GPP Series User Manual 
86 
Restore Factory Default Settings 
 
There’s a group of Default value, the non-
modifiable factory default setting. User is able 
to restore Default or proceed to Preset 
operation from Power On under System. 
Press the System button to enter the interface 
followed by pressing either the F2 (Power On) 
or the F4 (Preset) button to select Default.     
Default setting of each channel 
Default setting of system