Rigol DS2000E Series Programming Guide

2 Command System RIGOL
DS2000E Programming Guide
2-63
:CALCulate:FFT:HSPan
Syntax
:CALCulate:FFT:HSPan <span>
:CALCulate:FFT:HSPan?
Description
Set or query the horizontal scale of the FFT operation result. The unit is Hz/div.
Parameter
Name Type Range Default
<span> Discrete Refer to Explanation 1.25MHz/div
Explanation
 The FFT horizontal scale is related to the current FFT sample rate of the screen (Sa). It can be Sa/20,
Sa/40, Sa/100, and Sa/200.
 The current FFT sample rate of the screen = the number of pixels per grid horizontally/the horizontal
timebase. The number of pixels per grid horizontally is related to the on/off status of the FFT
anti-aliasing function; it is 50 when the ainti-aliasing function is disabled and 100 when the
anti-aliasing function is enabled. For the horizontal timebase, refer to the
:TIMebase[:MAIN]:SCALe
command.
 You can set the horizontal scale of FFT operation indirectly by setting the FFT horizontal coefficient
(:CALCulate:FFT:HSCale
).
Return Format
The query returns the horizontal scale of the FFT operation result in scientific notation.

Rigol DS2000E Series Specifications

General

Brand	Rigol
Model	DS2000E Series
Category	Test Equipment
Language	English