Configuring the Internal Baseband Source
R&S
®
SMBV100B
218User Manual 1178.4460.02 ─ 03
4. A segment ("Current Segment") is output continuously as long as the value of the
parameter "Segment" is not changed. Change the value of the parameter "ARB >
Trigger In (MSW) > Segment" to select the segment index processed after com-
pleting the current one.
5. The seamless transition between the segments requires waveforms with equal
clock rate.
If the waveforms feature different sample rates, select "ARB > Multi Segment >
Level/Clock/Marker > Clock Mode = Highest" or "Clock Mode = User" to resample
the waveforms.
To enable an external triggering for high-speed switch over
To test DUTs/chips using different test signals at high throughput requires fast switch
over (for instance when testing ATE devices during manufacture).
We assume, that the required multi-segment sequence is created and loaded in the
ARB (see "Generating a multi-segment waveform file (basic workflow)" on page 215).
The segments are output in incremental order. The instrument is operated manually,
the ARB generator is in active state, and the instrument output is switched on. An
external global or local trigger source is connected to the instrument and the corre-
sponding connectors are configured.
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. Select "ARB > Trigger In (MSW) > Next Segment Mode = Next Segment".
2. Select "ARB > Trigger In (MSW) > Next Segment Source = External (NEXT)".
3. Do not change the displayed segment index (parameter "ARB > Trigger In (MSW)
> Segment").
4. Enable "ARB > Trigger > Trigger Mode = Auto"
5. Select "ARB > Trigger > Trigger Source = External Global"
6. If the waveforms in the multi-segment file feature different sample rates, select
"ARB > Multi Segment > Level/Clock/Marker > Clock Mode = Highest" or "Clock
Mode = User" to resample the waveforms.
The switch over between the segments is triggered by receiving of an external trig-
ger event. The segments are output in incremental order, i.e. Seg#0, Seg#1, etc.
The currently processed segment ("Current Segment") is output continuously as
long as a new trigger event is received. A new trigger event aborts the output of the
current segment immediately and starts the processing of the next one in the
sequence.
Tip: To output the segments in any order, use the ARB sequencer mode, see "To
configure a multi-segment sequence using the play list function" on page 219.
For general description on the configuration of the trigger and connector settings:
See Chapter 10.2, "Configuring the Global Connectors", on page 515.
Generating Multi-Segment Waveform Files
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