ST2883 Series Operation Manual Chapter 8 SCPI Command reference
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8.4.5 Sample RATE subsystem commands
The Sample RATE subsystem commands set the sample rate and the time base zoom. Figure 6-5 shows the Sample
RATE subsystem command tree.
Sample RATE
:RATE <value>
:EXTend
MIN
MED
MAX
Figure 8-7 Sample RATE subsystem command tree
The :RATE command sets the sample rate. The :RATE? query returns the current sample rate.
Command syntax: SRATE:RATE <value>
Where,
<value> The available values are listed as follows:
100MSa/s, 50MSa/s, 25MSa/s, 12.5MSa/s
，
6.25MSa/s, 3.12MSa/s, 1.56MSa/s
，
100M, 50M, 25M, 12.5M
，
6.25M, 3.12M, 1.56M
，
For example: WrtCmd( “SRATE:RATE 100MSa/s” ); 100MSa/s.
NOTE:
When ST2883 is not in the test state, SRATE[:RATE] command changes the current sample
rate. When ST2883 is in the test state, three cases may occur.
1.
When the standard waveform is tested in the mode of SEQ CYPLE or SINGLE SAMPLE, this
command will be ignored.
2.
When the standard waveform is tested in the mode of SINGLE CYCLE, if the test has not put
an end, this command will be ignored; if the test is nearly finished, this command will select the standard
waveforms under different sample rate.
3.
When the tested device is under test, this command will be ignored.
Command syntax: SRATE:RATE
？
Return format:
100MSa/s
50MSa/s
25MSa/s
12.5MSa/s <NL^END>
6.25MSa/s
3.12MSa/s
1.56MSa/s
The :EXTend command sets the time base zoom function. The :EXTend? query returns the current value of the
time base zoom.
Command syntax:
MIN
SRATE:EXTend
MED
MAX
Where,
MIN
Set to display all 960 points of the waveform, which means the timer shaft is not extended.
MED Set to display the first 480 points of the waveform, which means the timer shaft is extended to one times
the original one.
MAX Set to display the first 240 points of the waveform, which means the timer shaft is extended to two times
