RIGOL DS1000D - Manual (Page 56)

RIGOL Command Systems
Programming Guide for DS1000E, DS1000D Series 2-44
Function Explanation:
The commands set and query the current number of specified line in
synchronous mode. In NTSC standard，the range of <value> is 1~525；In
AL/SECAM standard, the range of <value> is 1~625.
Returned Format:
The query returns the setting value of <value>.
Example:
:TRIG:ALT:VIDEO:LINE 100 Setup the number of specified line in
synchronous mode as 100.
:TRIG:ALT:VIDEO:LINE? The query returns 100.
12. :TRIGger:ALTernation:SLOPe:WINDow
Command Format:
:TRIGger:ALTernation:SLOPe:WINDow <count>
:TRIGger:ALTernation:SLOPe:WINDow?
Function Explanation:
The commands set and query the type of trigger level which can be adjusted by
in current state.
When the slope is +GREaterthan, +LESSthan or + EQUal, the <count> could be
PA (rising edge Level A), PB (rising edge Level B) or PAB (rising edge Level AB);
When the slope condition is -GREaterthan, -LESSthan or –EQUal, the <count>
could be NA (failing edge Level A), NB (failing edge LevelB) or NAB (failing edge
LevelAB).
Returned Format:
The query returns P_WIN_A, P_WIN_B, P_WIN_AB, N_WIN_A, N_WIN_B or
N_WIN_AB.
Example:
:TRIG:ALT:SLOP:WIND PA Setup the type of trigger level as rising edge
Level A.
:TRIG:ALT:SLOP:WIND? The query returns P_WIN_A.