User manual

Chapter 2 Command System RIGOL

MSO1000Z/DS1000Z Programming Guide 2-97

:MATH:FFT:HSCale

Syntax :MATH:FFT:HSCale <hsc>

:MATH:FFT:HSCale?

Description

Set or query the horizontal scale of the FFT operation result. The default unit is Hz.

Parameter

Name

Type

Range

Default

<hsc>

Real

Refer to Explanation

5MHz

Explanation  <hsc> can be set to 1/1000, 1/400, 1/200, 1/100, 1/40, or 1/20 of the FFT sample

rate.

 When the FFT mode is set to TRACe, FFT sample rate equals to screen sample rate,

that is, 100/horizontal timebase.

When the FFT mode is set to MEMory, FFT sample rate equals to memory sample

rate (

:ACQuire:SRATe?).

 You can view the detailed information of the frequency spectrum by reducing the

horizontal scale.

Return

Format

The query returns the horizontal scale in scientific notation.

Example

:MATH:FFT:HSCale 500000 /*Set the horizontal scale of the FFT operation result to

500kHz*/

:MATH:FFT:HSCale? /*The query returns 5.000000e+05*/

Commands

:MATH:OPERator

:MATH:FFT:MODE

:TIMebase[:MAIN]:SCALe