The E5061B stops to output RF/LF signal source and DC Bias while the measurement is hold. (when Initial Source Control is ON, default setting). This function allows you to output signal source and DC Bias even while the measurement status is in hold.
RF/LF Signal
Press System > Service Menu > Init Src Ctrl > RF Out to turn OFF.
DC Bias
Press System > Service Menu > Init Src Ctrl > DC Bias to turn OFF.
Other topics about Setting Control Functions