Rigol DG4000 Series

Parameter
Name Type Range Default
-- Keyword CH1|CH2 CH1

Explanation
1. This command is only available when the coupling function is disabled (use
the :COUPling[:STATe] ON|OFF command to disable the coupling function).
2. When frequency, phase or amplitude coupling is enabled, a green "*" is
displayed at the left of the frequency, phase or amplitude of the base channel of
coupling.