NI PXI/PCI-5401/5411/5431
Single Trigger Mode

The waveform you define in the staging list generates 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 Arbitrary Waveform Generation and Function Generation modes.

• Arbitrary Waveform Generation mode—In the following figure, Arbitrary Waveform Generation mode uses stages 1, 2, and 3 to create a Single trigger mode of operation for Arb Generation Waveform mode. After the NI signal generator receives a trigger, the waveform generation starts at the first stage and continues through the last stage. The last stage generates repeatedly until you stop the waveform generation.

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

• Function Generation mode—In Function Generation mode, after the NI signal generator receives a trigger, the waveform generation starts at the first stage and continues through the last stage. The last stage generates repeatedly until you stop the waveform generation. The following figure shows a Single trigger mode of operation for Function Generation mode.

For example, assume that one cycle of a sine wave is stored in the Function Generation lookup memory. For stage 1, f₁ specifies the sine frequency to be generated for time Δt₁, f₂ and Δt₂ for stage 2, and so on. If the staging list contains four stages, f₄ generates continuously until the waveform generation is stopped.