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Rigol DS2302A
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2 Command System RIGOL
MSO2000A/DS2000A Programming Guide
2-55
:CALCulate:FFT:HOFFset
Syntax
:CALCulate:FFT:HOFFset <offs>
:CALCulate:FFT:HOFFset?
Description
Set or query the horizontal offset of the FFT operation result. The unit is Hz.
Parameter
Name Type Range Default
<offs> Real
-0.4*the current FFT sample rate of the
screen to +0.4*the current FFT sample rate
of the screen
0
Note: The current FFT sample rate of the screen = the number of points per grid horizontally/horizontal time base.
For the horizontal time base, refer to the
:TIMebase[:MAIN]:SCALe command.
Return Format
The query returns the horizontal offset in scientific notation.
:CALCulate:FFT:HSPan
Syntax
:CALCulate:FFT:HSPan <span>
:CALCulate:FFT:HSPan?
Description
Set or query the horizontal scale of the FFT operation result.
Parameter
Name Type Range Default
<span> Real
The current FFT sample rate of the
screen/200 to the current FFT sample rate of
the screen/20
5MHz/div
Note: The step is 1X-2X-5X-10X within the range.
The current FFT sample rate of the screen =the number of points per grid horizontally/horizontal time base. For the
horizontal time base, refer to the
:TIMebase[:MAIN]:SCALe command.
You can use the
:CALCulate:FFT:HSCale command to set the horizontal scale of FFT operation indirectly.
Return Format
The query returns the current horizontal scale in scientific notation and the unit is Hz/div.

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