Rohde & Schwarz RTP044 - Page 1205

Remote control commands
R&S
®
RTP
1205User Manual 1337.9952.02 ─ 12
CHANnel<m>[:WAVeform<n>]:DATA[:VALues]? [<Offset>], [<Length>]
Returns the data of the channel waveform points for transmission from the instrument
to the controlling computer. The data can be used in MATLAB, for example.
Without parameters, the complete waveform is retrieved. Using the offset and length
parameters, data can be retrieved in smaller portions, which makes the command
faster.
To set the export format, use FORMat[:DATA].
You can retrieve only Y-values (usually voltage values), or X- and Y-values. Use
EXPort:WAVeform:INCXvalues to define which values are retrieved.
If multichannel export is active (EXPort:WAVeform:MULTichannel), the channel
suffix is ignored. To select the channels to be exported, use CHANnel<m>:
EXPortstate. The Y-values are written in interleaved order, for example, YCh1
0
;
YCh2
0
; YCh1
1
; YCh2
1
... for a 2-channel instrument.
Suffix:
<m>
.
1..4
Selects the input channel.
<n> 1..3
Selects the waveform. If [:WAVeform<n>] is omitted, waveform 1
is adressed.
Query parameters:
[<Offset>] Number of offset waveform points.
Range: 0 to m. Limit: n + m >= record length
[<Length>] Number of waveform points to be retrieved.
Range: 1 to n. Limit: n + m >= record length
Return values:
<Data> List of values according to the format and content settings.
Example: Retrieve the complete channel 1 waveform, only Y-values:
FORM ASC
EXP:WAV:INCX OFF
CHAN1:WAV1:DATA?
<-- -0.125000,-0.123016,-0.123016,-0.123016,-0.123016,-0.123016,...
Example: Retrieve the first 10 values of the waveform:
CHANnel:WAVeform:DATA:VALues? 0,10
<-- -0.10079051554203,-0.098814234137535,-0.098814234137535,
-0.096837945282459,-0.094861663877964,-0.094861663877964,
-0.092885382473469,-0.090909093618393,-0.090909093618393,
-0.088932812213898
Example: Skip 5 samples and retrieve the next 5 samples:
CHANnel:WAVeform:DATA:VALues? 5,5
<-- -0.094861663877964,-0.092885382473469,-0.090909093618393,
-0.090909093618393,-0.088932812213898
Acquisition and setup