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PFI Trigger voltage channel

Hi all,

This is a pretty simple question. For a PFI trigger input on a DAQ card, is there a common maximum voltage that the card can handle? if so what is that voltage?

 

Thankyou!

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Guess what is written in the specifications?

 

Greetings from Germany
Henrik

LV since v3.1

“ground” is a convenient fantasy

'˙˙˙˙uıɐƃɐ lɐıp puɐ °06 ǝuoɥd ɹnoʎ uɹnʇ ǝsɐǝld 'ʎɹɐuıƃɐɯı sı pǝlɐıp ǝʌɐɥ noʎ ɹǝqɯnu ǝɥʇ'


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It is designed to be a 5V ttl or cmos signal.  With a bit of overhead, but i would not repeatedly rely on the card to handle overvoltage.  Put a 5V zener diode across the input (and a series resistor to drop the current).  That can protect against almost anything for a few pennies.  If you get to kV there are other things to prevent arcing.

 

For a few hundred volts, a 10KΩ resistor and 5V zener for a fraction of a watt will solve the issue and protect your hardware cheaply.

LabVIEW ChampionLabVIEW Channel Wires

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