Pause Trigger Considerations for AO Series Devices

The source of your sample clock can affect when your generation resumes after the deassertion of a Pause Trigger.

Analog Output

When you generate analog output signals, the generation pauses as soon as the Pause Trigger is asserted. If the source of your sample clock is the onboard clock, the generation resumes as soon as the Pause Trigger is deasserted.

If you are using any signal other than the onboard clock as the source of your sample clock, the generation resumes as soon as the Pause Trigger is deasserted and another edge of the sample clock is received, as shown in the following figure.

Counters

Continuous pulse-train generation: The pulse-train generation pauses as soon as the Pause Trigger is asserted, not at the end of a pulse. The pulse train resumes after the Pause Trigger is deasserted. A Pause Trigger elongates either the high or low pulse depending on which one was being generated at the time the Pause Trigger was asserted.

Nonbuffered edge counting: The counter stops counting edges as soon as the Pause Trigger is asserted and resumes counting edges after the Pause Trigger is deasserted.