User manual

RIGOL Chapter 2 Command System
2-202 DS4000E Programming Guide
 NEGative: indicates that the oscilloscope triggers at the crossing point where the falling edge of the
input signal meets the preset trigger level.
 RFALl: indicates that the oscilloscope triggers at the crossing point where the rising or falling edge of
the input signal meets the preset trigger level.
Return Format
The query returns POS, NEG, or RFAL.
:TRIGger:EDGe:SOURce
Syntax
:TRIGger:EDGe:SOURce <source>
:TRIGger:EDGe:SOURce?
Description
Sets or queries the source channel of Edge trigger.
Parameter
Name Type Range Default
<source> Discrete {CHANnel1|CHANnel2|CHANnel3|CHANnel4|EXT|EXT5|ACLine} CHANnel1
Remarks
Channels that are not currently turned on can also be selected as the trigger source.
Return Format
The query returns CHAN1, CHAN2, CHAN3, CHAN4, EXT, EXT5, or ACL.