GW Instek GDS-3000 Series Programming Manual - Manual (Page 43)

COMMAND DETAILS
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Parameter <x> Source number: 1/2/3/4
CH1~4 Channel 1 to 4
REF1~4 Reference waveforms 1 to 4
Return parameter Returns the source for the source 1 or 2.
Example :MATH:DUAL:SOURce1 CH1
Sets source1 as channel 1.
:MATH:DUAL:OPERator
Set
Query
Description Sets the math operator for dual sourced math
operations.
Syntax :MATH:DUAL:OPERator {PLUS | MINUS | MUL|
DIV|?}
Parameter PLUS + operator MINUS - operator
MUL 
operator DIV ÷ operator
Return parameter Returns operator type.
Example :MATH:DUAL:OPERator PLUS
Sets the math operator as plus (+).
:MATH:DUAL:POSition
Set
Query
Description Sets the vertical position of the displayed math
result expressed by division.
Syntax :MATH:DUAL:POSition <NRf|?>
Parameter <NRf> Vertical position
Depends on the vertical scale (Unit/Div)
Return parameter Returns the position as <NR3>.