Section 5: SCPI command reference     Model 2231A Triple-channel DC Power Supply Reference Manual 
5-24  077100401/September 2014 
 
Syntax  STATus:OPERation:INSTrument:ISUMmary<x>:CONDition? 
Arguments  None   
Returns  0~255 
Examples  Stat:oper:inst:isum1:cond? 
SOURce subsystem 
The commands in the SOURce subsystem configure and control the current source and voltage 
source.   
[SOURce:]CHANnel:OUTPut[:STATe]   
This command is to set the output state of the currently selected channel. 
Item  Description 
Group  Source 
Syntax  [SOURce:]CHANnel:OUTPut[:STATe] 
[SOURce:]CHANnel:OUTPut[:STATe]? 
Arguments  0|1|ON|OFF 
Returns  0|1 
Examples  Chan:outp 1 
Chan:outp? 
[SOURce:]CURRent[:LEVel][:IMMediate][:AMPLitude]   
This command is to set or query the current value for the present channel. 
Item  Description 
Group  Source 
Syntax  [SOURce:]CURRent [:LEVel]    <NRf> 
[SOURce:]CURRent[:LEVel][:IMMediate][:AMPLitude]? 
Arguments  MIN TO MAX|MIN|MAX|UP|DOWN|DEF 
Unit  A| mA 
Returns  <NR2> is the current setting   
Examples  Curr 2 
Curr? 
[SOURce:]CURRent[:LEVel]:UP[:IMMediate][:AMPLitude]   
This command is to increase the current value by one step. Set the current step using the command: 
[SOURce:]CURRent[:LEVel][:IMMediate]:STEP[:INCRement]