Nevion HD-TD-10GMX-6 - Manual (Page 14)

HD-TD-10GMX-6 / HD-TD-10GDX-6 Rev. B
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4.3 On GPIO pins
There are three GPIO status lines, see Table 1: Connector functions on page 5. One is a
general card status alarm; the connection to ground is open when the card has either
detected a critical fault or is powered off, the connection to ground is closed when the
module is in normal operation. This GPIO pin effectively follows the status LED described in
Table 2 in the previous chapter.
Then there are two alarms that reflect LEDs 3 and 4 described in Table 2; a green LED
gives a closed connection to the ground pin, while a red or orange LED gives an open
connection to the ground pin.