NI 5402/5406/5412/5421/5422/5441/5442
Trigger Timing

The following figure shows the relationship between Start trigger and the waveform output. t_s1 is the required pulse width on the Start trigger signal. t_s2 is the delay from the Start trigger to the waveform output. Refer to the device specifications for more information about these timing parameters.

The signal generator also allows you to export signals to trigger other devices based on the waveform output of the signal generator. Two events can be exported from the signal generator to signal other devices that waveform generation has started—the exported Start trigger and the Marker event. NI-FGEN refers to the exported Start trigger as the Out Start trigger. Refer to Exporting Signals for more information about using these signals.

The exported Start Trigger event is a slightly delayed version of the Start trigger used for waveform generation. It is guaranteed to be at least 150 ns wide. The preceding figure also shows the relationship between Start trigger and the exported Start trigger. t_s3 is the delay between the Start trigger and the time the device generates the exported Start trigger. t_s4 is the pulse width of the exported Start trigger signal.