RIGOL DS1000D - Manual (Page 50)

RIGOL Command Systems
Programming Guide for DS1000E, DS1000D Series 2-38
3. :TRIGger:DURation:QUALifier
Command Format:
:TRIGger:DURation:QUALifier
:TRIGger:DURation:QUALifier?
Function Explanation:；
The commands set and query the limiting condition of trigger time.
could be GREaterthan, LESSthan or EQUal.
Returned Format:
The query returns GREATER THAN, LESS THAN or EQUAL.
Example:
:TRIG:DUR:QUAL GRE Setup the limiting condition as “GREaterthan”.
:TRIG:DUR:QUAL?
The query returns GREATER THAN.