User manual

RIGOL Chapter 2 Command System
2-172 DS4000E Programming Guide
:REFerence:SOURce
Syntax
:REFerence:SOURce <source>
:REFerence:SOURce?
Description
Sets or queries the source channel of the current reference waveform channel.
Parameter
Name Type Range Default
<source> Discrete {CHANnel1|CHANnel2|CHANnel3|CHANnel4|MATH} CHANnel1
Remarks
Only the currently enabled channel can be selected as the source channel of the reference waveform.
Return Format
The query returns CHAN1, CHAN2, CHAN3, CHAN4, or MATH.
:REFerence:VOFFset
Syntax
:REFerence:VOFFset <voffset>
:REFerence:VOFFset?
Description
Sets or queries the vertical position of the current reference waveform.
Parameter
Name
Type
Range
Default
<voffset>
Integer
-192 to +192
0
Remarks
When <voffset> is 0, the vertical position of the reference waveform is the same as that of the source
channel waveform before the save operation is executed. Increasing or reducing <voffset> will move the
reference waveform up or down vertically relative to the original position.
Return Format
The query returns an integer between -192 and +192.
:REFerence:VSCale
Syntax
:REFerence:VSCale <vscale>
:REFerence:VSCale?
Description
Sets or queries the vertical scale of the current reference waveform.
Parameter
Name Type Range Default
<vscale> Integer 1 to 10 Null