The Spectrum softkey controls the spectrum measurement and indicates its status (RUN | HLT | OFF). This status can be changed after softkey selection (pressing once) by means of the ON/OFF key or the CONT/HALT key.
Remote control
INITiate:SPECtrum; ABORt:SPECtrum
STOP:SPECtrum; CONTinue:SPECtrum
FETCh:SPECtrum:STATus?