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Author Topic: PPS Signal current?  (Read 3464 times)


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PPS Signal current?
« on: January 06, 2012, 04:38:36 pm »

How long is the PPS-Signal?
Is it possible to drive an  optocoupler (2mA) with the PPS-output?
What is the maximum current of the PPS-Output?


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Re: PPS Signal current?
« Reply #1 on: January 12, 2012, 01:41:53 pm »

For your first inquiry, the PPS is HIGH for every 1 second  and stays for 1 microsecond. Also, the voltage is 2.85V.

Regarding your question about the optocoupler, our engineers stated that this may require optic coupler support because the 1PPS output is a very short pulse to be detected. However, using optic coupler does not ensure 1PPS detection.

Lastly, the maximum current of the PPS output is 2mA.
« Last Edit: November 19, 2012, 12:34:24 pm by USG_TECH10 »
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