topic Re: Hardware timing in LabWindows/CVI

Hardware timing

bruno1 — Wed, 07 Sep 2016 15:59:15 GMT

Hi,

I have a PCIe-6321 installed. I need to control de time elapsed in a loop, but i need more precision that the function Timer(), i want to use the internal clock of the device but i dont know how to read it. I supose that is using some of the counter function but i dont know how exactly do it.

Regards,

Bruno

Re: Hardware timing

KIKEV89 — Thu, 08 Sep 2016 16:28:12 GMT

Hello Bruno1

why do you want meassure the elapsed time in a loop?

the problem is that if you use the device clock, you will meassure only the elapsed time since your acquisition start, not the total aplication elapsed time

Re: Hardware timing

KIKEV89 — Thu, 08 Sep 2016 16:29:52 GMT

Hello Bruno1

why do you want measure the elapsed time in a loop?

the problem is that if you use the device clock, you will measure only the elapsed time since your acquisition start, not the total application elapsed time

Re: Hardware timing

bruno1 — Thu, 08 Sep 2016 22:12:21 GMT

I work in auditory/visual research, so i need that, for example, a red light appears in the screen in a certain time with respect to other thing, and also that appears for a certain amount of time. In the legacy DAQ drivers this is possible using the function CounterEventOrTimeConfig, and using CounterStart, CounterRead and CounterStop to start, read and stop counting the device clock.

Re: Hardware timing

engine_motor — Thu, 22 Sep 2016 06:47:40 GMT

GetTickCount();

by using this youcan find elapsedtime

elapsed time=strttickcount-endtickcount