Disable or enable the sweep mode. To avoid multiple waveform changes, 
you can enable the sweep mode after you have set up the other sweep 
parameters. The default is OFF. The :SWE[1|2]:STAT? query returns 
“0” (OFF) or “1” (ON). 
The instrument will not allow the sweep mode to be enabled at the same 
time that burst or any modulation mode is enabled. When you enable 
sweep, the burst or modulation mode is turned off.