Keysight Technologies AC6801B - Source:] Subsystem

[SOURce:] Subsystem
Because the SOURce keyword is optional for the [SOURce:]CURRent, [SOURce:]FREQuency, and
[SOURce:]VOLTage subsystems, these subsystems are listed without the [SOURce:] keyword.
CURRent Subsytem
FREQuency Subsystem
VOLTage Subsystem
Keysight AC6800B Series Operating and Service Guide 145
3SCPI Programming Reference