Rohde & Schwarz SMW200A - How to Define Periodically Repeating Traces

Remote Control Commands
R&S
®
SMW200A
974User Manual 1175.6632.02 ─ 16
How to Define Periodically Repeating Traces
If a marker trace is required that marks for example each frame start, it is sufficient to
define the trace ones and repeat it over the length of a waveform. This is useful if you
describe a long waveform and a periodical marker is required.
The following examples use marker traces; control lists are processed in the same
way.
To define periodical marker trace
The waveform in the example on Figure 13-7 consists of 3 frames, each frame is 100-
samples long. The waveform is processed continuously ("Trigger Mode > Auto").
Figure 13-7: Example: Defining marker traces (CONTROL LENGTH tag is not used)
To define a restart marker and a frame start marker, use the following tags:
1. The waveform is 300 samples long, i.e. set {SAMPLES: 300}.
2. Set two [TRACE] LIST tags:
● For Marker 1 that acts as a restart marker:
{MARKER LIST 1: 0:1; 10:0; 299:0}
● For Marker 2 that marks each frame start:
{MARKER LIST 2: 0:1; 10:0; 99:0}
3. Do not use the CONTROL LENGTH tag.
The length of the repeated patterns is determined by the last sample number in the
[TRACE] LIST, that is the last {Pos:State} .
SOURce Subsystem