Instrument Function
R&S
®
SMU200A
411Operating Manual 1007.9845.32 ─ 15
The default file name of the play list file is the same as the multi segment waveform file
name, but it can be changed.
Play list files have the file extension *.wvs.
SCPI command:
n.a.
Typical Applications for Multi Segment Waveforms
This section gives examples of the typical applications for multi sgment waveforms.
High Speed Switchovers
To test DUTs/chips using different test signals at high throughput requires extremely fast
switchovers (for instance when testing ATE devices during manufacture). The following
settings enable switching times of approx. 5 us and the test signals are scrolled through
with the aid of an external trigger signal:
1. "Trigger Mode" = "Auto"
2. "Trigger Source" = "External Trigger"
3. If the waveforms have different sample rates:
"Clock Mode" = "Highest" or "User" (when creating the waveform in the Multi Segment
Editor)
Flexible Dynamic Switchovers
When testing DUTs using different test signals, it may be necessary to switch dynamically
and flexibly between any of the test signals, for instance depending on the outcome of
the previous test. When using remote control via an external computer, the following
settings enable switching times of approx. 20 ms for segments with the same sample rate
and approx. 200 ms for segments with different sample rates:
1. "Extended Trigger Mode" = "Next Segment"
2. "Trigger Mode" = "Auto"
3. "Trigger Source" = "Internal"
Flexible Dynamic Switchovers without Signal Interruptions
Testing receivers requires a continuous output of different test signals without interrupting
the signal. The test signals then produce a complex total signal with no signal gaps on
switchover. Control procedures can use a simulated back channel of the receiver (trigger
line or remote control).
Switching times depend on the length of the segment currently being output, since
switchover to the next segment does not take place until the current segment comes to
an end.
1. "Extended Trigger Mode" = "Next Segment Seamless"
2. "Trigger Mode" = "Auto"
Baseband Signal - Baseband Block
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