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7
Remote Programming
: TRIGger:SWEep
174
Sample rate 32GSa/s, Data Processing Mode DDC
A vector consists of 32 I/Q sample pairs. The number of pre-trigger
samples is the equivalent of 32 vectors. The following table lists the
resulting pre-trigger-time dependent on the decimation value.
Decimation
Command
:TRIGger:SWEep {AUTO | TRIGgered}
Description
The command selects the sweep mode, which defines how the capture of
digitized samples to memory or the ODI streaming is started.
AUTO Capture to memory or ODI streaming will start on trigger reception.
If a trigger event does not occur within 20 ms, the digitizer automatically
forces a trigger. If the frequency of your waveform is 50 Hz or less, you
should not use the AUTO sweep mode, because it is possible that the
digitizer will automatically trigger before your waveform trigger occurs.
TRIGgered Capture to memory or ODI streaming will start on trigger
reception. If no trigger occurs, capture to memory or ODI streaming will
not start.
Query
:TRIGger:SWEep?
The query returns the current setting for the sweep mode.
Sample Time (ns)
Vector Time (ns)
4
0.125
8
0.25
16
0.5
32
1
64
2
128
4
256
8
512
16
Keysight M8131A 16/32 GSa/s Digitizer User's Guide
Vectors Before
Pre-Trigger Time
Trigger
4
32
8
32
16
32
32
32
64
32
128
32
256
32
512
32
(ns)
128
256
512
1024
2048
4096
8192
16384
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