Simultaneously read 4 counters on 6602 card

[Ron Markum]

I have Labview 5.1 and a NI 6602 counter/timer card. I need to start, make several readings, and stop 4 counters simultaneously (ttl pulse input). It is critical that they all be started and the final reading taken at the same time. I have tried several of the simple VIs and example codes but I am new to counter programming and don't know enough to make them work. If someone could provide information/explanation or example code, it would be most helpful.

Thanks
Ron

[bman]

Ron

To simultaneously arm multiple counters, you must enable start trigger for each counter. When a start trigger is enabled on a counter, it awaits this trigger after it has been armed by software. The counter begins whatever function it has been programmed for after receiving this start trigger.

In LabVIEW, use the 'Counter Start Trigger (NI-TIO).vi' to enable the start trigger.

Brian