Agilent Technologies N1911A Programming Manual page 276

5 DISPlay Subsystem
• Lower window (dual channel only): SENS2
Query
DISPlay:[WINDow[1]|2]:TRACe:FEED?
The query returns the channel of the trace currently displayed in the
specified window.
Query Example
DISP:WIND2:TRAC:FEED?
248
This command queries the channel of the
trace currently displayed in the lower
window.
N1911A/1912A P-Series Power Meters Programming Guide