Rigol DS1104Z Programming Guide

Chapter 2 Command System RIGOL
DS1000Z Programming Guide 2-41
:MATH:FFT:UNIT
Syntax :MATH:FFT:UNIT <unit>
:MATH:FFT:UNIT?
Description
Set or query the vertical unit of the FFT operation result.
Parameter
Name
Type
Range
Default
<unit>
Discrete
{VRMS|DB}
DB
Return
Format
The query returns DB or VRMS.
Example
:MATH:FFT:UNIT VRMS
Related
Command
:MATH:OPERator
: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
5.00MHz
Explanation  <hsc> can be set to 1/20, 1/40, 1/100 and 1/200 of the current screen sample rate
(current screen sample rate=100/current horizontal timebase).
For example, if the horizontal timebase of the instrument is 1μs, the current screen
sample rate is 100/1μs=100MHz. Thus, the horizontal scale can be set to 5MHz,
2.5MHz, 1MHz or 500kHz.
 You can view the detailed information of the 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 to 500kHz*/
:MATH:FFT:HSCale? /*The query returns 5.000000e+05*/
Related
Commands
:MATH:OPERator
:TIMebase[:MAIN]:SCALe

Rigol DS1104Z Specifications

General

Bandwidth	100 MHz
Channels	4
Sample Rate	1 GSa/s
Waveform Capture Rate	30, 000 wfms/s
Vertical Sensitivity	1 mV/div to 10 V/div
Time Base Range	5 ns/div to 50 s/div
Vertical Resolution	8 bits
Interface	USB Host, USB Device, LAN, AUX
Display	7 inch TFT LCD (800 x 480)
Trigger Types	Edge, Pulse, Video, Slope
Power Supply	100-240 V, 45-440 Hz
Memory Depth	24 Mpts (Single Channel), 12 Mpts (Dual Channel)