User manual

GDS-200 & GDS-300 Programming Manual
42
Return parameter
<NR3>
Returns the vertical position.
Example
:MATH:FFT:POSition -2e-1
Sets the FFT position to -0.2 divisions.
:MATH:FFT:SCALe
Description
Sets the vertical scale of the displayed FFT result.
Syntax
:MATH:FFT:SCALe {<NRf> | ?}
Parameter
<NRf>
Vertical scale:
Linear: 2e-3 to 1e+ (2mV~1kV)
dB: 1e+0 to 2e+1 (1~20dB)
Return parameter
<NR3>
Returns vertical scale.
Example
:MATH:FFT:SCAle 1.0e+0
Sets the scale to 1dB.
:MATH:FFT:HORizontal:SCALe
Description
Sets or queries the horizontal scaling factor for FFT
math.
Syntax
:MATH:FFT:HORizonatal:SCALe {<NRf> | ?}
Parameter
<NRf>
Scale: 1, 2, 5, 10, 20 times
Return parameter
<NR3>
Returns the scaling factor.
Example
:MATH:FFT:HORizontal:SCALe 5
Scales the FFT waveform 5X.
:MATH:FFT:HORizontal:POSition
Description
Sets or queries the FFT horizontal position.
Syntax
:MATH:FFT:HORizonatal:POSition {<NRf> | ?}
Parameter
<NRf>
FFT window position
Return parameter
<NR3>
Returns the zoom scale.
Set
Query
Set
Query
Set
Query