RIGOL
2-82
DS4000E Programming Guide
Return Format
The query returns the bitmap data stream in strings.
The returned value consists of the TMC data block header and BMP data. The format and detailed Remarks
of each part are as shown in the table below.
TMC Data Block Header
BMP Data
Size
(Length)
N
[1]
+2
8054=1152054
[2]
Format
#NX…X
BM...
Remarks
It is used to describe the length of the data stream (the
number of bytes).
Wherein, # is the start identifier of the data stream; N≤9
denotes that N-digit data following the start identifier are
used to describe the length of the data stream (the
number of bytes).
For example, #9001152054.
Wherein, N is 9, and 001152054 represents that the data
stream contains 1152054 bytes of effective data.
Bitmap data
Note
[1]
: N is the width of the bits that are used to describe the data length in the TMC data block header.
For example, 9 in #9001152054.
Note
[2]
: The width
is 800, the height is 480, the bit depth is 24 bit (3 bytes), and 54 is the size of the bitmap
file header.
:DISPlay:GBRightness
Syntax
:DISPlay:GBRightness <bright>
:DISPlay:GBRightness?
Description
Sets or queries the display brightness of the screen grid (in percentage).
Parameter
Name
Type
Range
Default
<bright>
Integer
0 to 100
50
Return Format
The query returns an integer between 0 and 100.
:DISPlay:GRADing:TIME
Syntax
:DISPlay:GRADing:TIME <time>
:DISPlay:GRADing:TIME?
Description
Sets or queries the persistence time. The default unit is s.
Parameter
Name
Type
Range
Default
<time>
Discrete
{MIN|0.05|0.1|0.2|0.5|1|2|5|10|20|INFinite}
MIN
Remarks
MIN: sets the persistence time to its minimum value to view how the waveform changes with high
refresh rate.
