For the Bode Plots on the E5061E, and probably other waveforms
Once we perform a sweep, the wave form is displayed, but when the
next sweep is executed the old one remains and the new one
removed the old one as it sweeps.
It is prefered to clear the display before I start the new sweep but can't
find a remote SCPI type command, or a series of SCPI commands, to do this.
Outside of doing a complete reset and re-configuration, can't see any
series of remote commands to to this, or panel button operations.