NI-5411 Arbitrary Waveform Generator - Single Trigger Mode

The waveform you define in the staging list is generated only once by going
through the entire staging list. Only one trigger is required to start the
waveform generation.

You can use single trigger mode with both the ARB and DDS waveform
generation modes as follows:

ARB mode

Figure 1 uses the stages 1, 2, and 3 shown in Figure 2-4
to illustrate a single trigger mode of operation for ARB waveform
generation mode. After the NI 5411/5431 receives a trigger, the
waveform generation starts at the first stage and continues through the
last stage. The last stage is generated repeatedly until you stop the
waveform generation.


Figure 1 Single Trigger Mode for ARB Mode

Note: You can settle to a predefined state by making the last stage emulate that state.

DDS mode

After the NI 5411/5431 receives a trigger, the waveform
generation starts at the first stage and continues through the last stage.
The last stage is generated repeatedly until you stop the waveform
generation. Figure 2 illustrates a single trigger mode of operation for
DDS waveform generation mode.



Figure 2. Single Trigger Mode for DDS Mode

For example, assume that one cycle of a sine wave is stored in the DDS
lookup memory. For stage 1, f1 specifies the sine frequency to be
generated for time, T2 for stage 2, and so on. If there are
four stages in the staging list, f4 will be generated continuously until
the waveform generation is stopped.

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