Rigol DS1204B Programming Manual page 74

RIGOL
4. Alternation Trigger
In alternation trigger, different signals can be triggered at the same time. And
the trigger signals are from two vertical channels. Alternation trigger is
applicable for viewing two non-relative signals. The trigger mode of two vertical
channels can be set as EDGE, PULSe, or VIDEO trigger.
(1) :TRIGger:ALTernation:SOURce
Command Format:
:TRIGger:ALTernation:SOURce□<source>
Function:
The command selects the alternation trigger channel. The <source> may
be CH1CH2, CH1CH3, CH1CH4, CH2CH3, CH2CH4 or CH3CH4.
Query Format:
:TRIGger:ALTernation:SOURce?
Return Format:
The query returns CH1CH2 or CH1CH3, CH1CH4, CH2CH3, CH2CH4,
CH3CH4.
Example:
:TRIGger:ALTernation:SOURce□CH1CH2
Set the alternation channel as CH1CH2.
:TRIGger:ALTernation:SOURce?
(2) :TRIGger:ALTernation:CURRentSOURce
Command Format:
:TRIGger:ALTernation:CURRentSOURce□<source>
Function:
The command sets the current channel. The <source> may be SOURceA or
SOURceB, and the source A and B are varying with the current alternation
channel.
Query Format:
:TRIGger:ALTernation:CURRentSOURce?
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Return CH1CH2.
Programming Guide for DS1000B Series