6608 continuous buffered frequency measurement

[cemapes]

When referencing the 6602 manual it describes a Buffered Frequency Measurement on pg 3-17. When I go to NI-DAQ 6.9.2 help it does not have a Buffered Frequency measurement under the select application parameters.It only has a continuous buffered event count parameter that comes close. And then the NI-DAQ6.9.2 shows that the continuous buffered event count is a continuous running total....which is different from what the manual describes. My question is this....is there a buffered frequency measurement parameter available to the 6608 functions?
The way that I am wanting to use the 6608 card is to use Counter0 to generate a pulse of a 1sec width and 1sec delay to be used as the Gate to Counter1 and then measure the unknown freq
of a signal on PFI-35 which is routed to the Source of Counter1.
Thanks,
Carl Mapes

[Filipe A.]

Hello;

There isn't a parameter in NI-DAQ that specific sets the counter to do frequency measurement.

The way to go about that is to set the counter to do buffered period measurement, and since the frequency value is the inverse of the period value, you will just need to invert the result gotten from that type of task.

The parameter to be used to set that task is ND_BUFFERED_PERIOD_MSR. More information on how to use that parameter can be found at the NI-DAQ on line help.

Hope this helps.
Filipe A.
Applications Engineer
National Instruments

[cemapes]

Felipe,
Thanks, that is what I finally did.Good to know that I was on the right track.
Thanks again,
Carl Mapes.