User manual

RIGOL Chapter 2 Command System
2-118 DS4000E Programming Guide
:MEASure:COUNter:SOURce
Syntax
:MEASure:COUNter:SOURce <source>
:MEASure:COUNter:SOURce?
Description
Sets or queries the measurement source of the frequency counter.
Parameter
Name Type Range Default
<source> Discrete {CHANnel1|CHANnel2|CHANnel3|CHANnel4|EXT|OFF} OFF
Remarks
When <source> is "OFF", it indicates that the frequency counter function will be disabled.
Return Format
The query returns CHAN1, CHAN2, CHAN3, CHAN4, EXT, or OFF.
:MEASure:COUNter:VALue?
Syntax
:MEASure:COUNter:VALue?
Description
Queries the measurement results of the frequency counter. The default unit is Hz.
Return Format
The query returns the measurement results of the frequency counter in scientific notation. The query
returns 9.9e37 if the frequency counter function is disabled (refer to the :MEASure:COUNter:SOURce
command).
:MEASure:CREGion:CAX
Syntax
:MEASure:CREGion:CAX <cax>
:MEASure:CREGion:CAX?
Description
Sets or queries the position of Cursor A when the measurement range is the "cursor area".
Parameter
Name
Type
Range
Default
<cax> Integer
0
to
691
300
Remarks
 The position of the cursor is defined by the pixel coordinate of the screen. The range of the pixel
coordinate on the screen horizontally is from 0 to 699 (from left to right).
 The actual range of <cax> is related to the position of Cursor B (refer to the :MEASure:CREGion:CBX
command). The range is from 0 to (the current position of cursor B - 6).
Return Format
The query returns an integer between 0 and 691.