User manual

Chapter 2 Command System RIGOL
DS4000E Programming Guide 2-183
:SYSTem:EXPand
Syntax
:SYSTem:EXPand <exp>
:SYSTem:EXPand?
Description
Sets or queries the vertical reference.
Parameter
Name Type Range Default
<exp> Discrete {CENTer|GROund} GROund
Remarks
 CENTer: when the vertical scale of the channel is modified, the waveform of the corresponding
channel will be zoomed in or out vertically relative to the screen center.
 GROund: when the vertical scale of the channel is modified, the waveform of the corresponding
channel will be zoomed in or out vertically relative to the ground level.
Return Format
The query returns CENT or GRO.
:SYSTem:GAMount?
Syntax
:SYSTem:GAMount?
Description
Queries the number of grids on the screen horizontally.
Return Format
For this oscilloscope, the query always returns 14.
:SYSTem:GPIB
Syntax
:SYSTem:GPIB <adr>
:SYSTem:GPIB?
Description
Sets or queries the GPIB address.
Parameter
Name
Type
Range
Default
<adr>
Integer
1 to 30
--
Return Format
The query returns an integer between 1 and 30.