Problems occur when applying input voltage above 12 VDC to the GPI. Why is that?

Applicability: FLIR A5, A15, A35, and A65.

We have found that the digital input (GPI) specification in the datasheets Opto-isolated, "0" < 2, "1"=2–40 VDC is not valid. There is a risk of destroying the input if a voltage >12 VDC is applied to the input.

To avoid problems the maximum input shall be 12 VDC. If the input is 24 VDC use a 1.2 kΩ resistor in serial. In that case “1” = 3–24 VDC.

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