Hello,
It seems that VISA Event Handling may help you acheive the functionality for which you are looking. Using VISA Event Handling, you can detect triggers or interrupts from your VXI devices and then handle (respond to) those events as you specify.
If the pulse generator you mentioned can generate a trigger or interrupt, you could use VISA Event Handling with LabVIEW.
Chapter 7 of the
NI-VISA User Manual describes how to use VISA Events in detail.
Chapter 4 of the
NI-VISA Programmer Reference Manua
l details the various events which can be detected.
There are also shipping examples in LabVIEW that demonstrate how to implement VISA Event Handling: Help >> Find Examples >> Hardware Input and Output >> VISA >> (VXI Trigger Event Handler) or (VXI/VME Interrupt Event Handler).
I hope this helps. VISA Event Handling seemd to most closely match your description. If this is not what you are looking for, please reply with additional information.
Regards,
Sonya W.
Applications Engineer
National Instruments