The PXIe-4133 supports start, pulse, and abort triggers. The PXIe-4133 exports Ready for Start, Ready for Pulse and Pulse Event signals.

Refer to the PXIe-4133 Specifications for trigger and event descriptions. The following state diagram illustrates each trigger type and event output.

Figure 10. PXIe-4133 State Diagram


The following figures illustrate trigger and event timing sequences for internal and external triggers.

Figure 11. Timing for a Two-Pulse Sequence with Immediate Start and Pulse Triggers


Figure 12. Timing for a Two-Pulse Sequence with External Start and Pulse Triggers


The following figures illustrates the start and pulse trigger ranges for external and immediate triggers relative to pulse period boundaries:

Figure 13. Internal and External Trigger Ranges


Ready Events and Synchronization

The Ready for Start Trigger Event and the Ready for Pulse Trigger Event are necessary for signal-based synchronization. To ensure that the PXIe-4133 will react to a trigger, do not send a trigger before the corresponding ready event is asserted. If the PXIe-4133 is not ready it will not recognize the trigger and your application will exhibit intermittent timeout errors.