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Hardware Triggering an Output Pulse (PWM)

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#1 GeorgSoerensen

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Posted 24 September 2013 - 01:04 AM

Is there a way to use an input signal (ttl) to trigger the U6 to (begin) output a PWM signal?

Currently I am using command/response method to output the PWM after waiting for an input signal from my equipment.

I could speed up my process if I could have the equipment directly trigger a PWM sequence.

I've seen that hardware triggering isn't available for reading data (most notably voltages) but can a counter (count to 1) be used to trigger an output pulse?


#2 LabJack Support

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Posted 24 September 2013 - 11:20 AM

No, the U6 can't do that.  Perhaps you could put a gate IC in series with the PWM signal, and have the trigger control the gate?

#3 GeorgSoerensen

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Posted 24 September 2013 - 06:19 PM

That won't work for me. I have a moving platform that needs to be in sync with the signal. A constant/consistent delay is fine but I can't have the trigger occuring at random points in the PWM signal. I built something similar 20 years ago using a ttl signal to trigger a PWM, just hoping it was an available option on your DAQ.

Thanks for the quick response.

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