Nevion AV-HD-XMUX - Manual (Page 24)

AV-HD-XMUX (-T/R) / AV-SD-XMUX (-T/R) Rev. L
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5.2 GPI alarms
Only three alarms are present on the RJ45 connector as four of the pins are used for the
RS422 data port.
The three alarms are:

Power present (negative logic)

Video signal lost

Laser failure
An active alarm condition means that the transistor is conducting.
The power present alarm should always be active during normal operation.
5.2.1 GPI/ Data connections RJ45
Figure 12: Pin layout
Pin number Description
1 Power present
2 No Video signal
3 Laser failure
4 RS485/422 output +
5 RS485/422 output -
6 RS422 input +
7 RS422 input -
8 Ground