There is an additional alarm-interface option called 'LFALARM'. This interface provides the possibility to monitor the current state of each card by single relay dry contacts. On the rear side of the LFTX/RX frame you find 2 D-SUB25 connectors (pin). Alarm connector corresponding to slot 1-5 is labelled with 'DO1', the other one corresponding to slot 6-10 is labelled with 'DO2'.
DO1 and DO2 pin layout and description
| Pin | description | definition |
|---|---|---|
| 1 | slot 1/6* | open at alarm |
| 2 | slot 1/6* | closed at alarm |
| 14 | COM slot 1/6* | COM |
| 3 | slot 2/7* | open at alarm |
| 4 | slot 2/7* | closed at alarm |
| 15 | COM slot 2/7* | COM |
| 5 | slot 3/8* | open at alarm |
| 6 | slot 3/8* | closed at alarm |
| 16 | COM slot 3/8* | COM |
| 7 | slot 4/9* | open at alarm |
| 8 | slot 4/9* | closed at alarm |
| 17 | COM slot 4/9* | COM |
| 9 | slot 5/10* | open at alarm |
| 10 | slot 5/10* | closed at alarm |
| 18 | COM slot 5/10* | COM |
| 19 | redundancy installed (active) | open at not installed |
| 20 | redundancy installed (actice) | closed at not installed |
| 11 | COM redundancy installed | COM |
| 21 | Redundancy Standby (AUTO) Mode, ready for switch-over in case of fault | open at not AUTO |
| 22 | Redundancy Standby (AUTO) Mode, ready for switch-over in case of fault | closed at not AUTO |
| 12 | COM Redundancy Standby (AUTO) | COM |
| 23 | Summary Alarm state Slot 1-5/6-10 | open at alarm |
| 24 | Summary Alarm state Slot 1-5/6-10 | closed at alarm |
| 13 | COM Summary Alarm state Slot 1-5/6-10 | COM |
| 25 | not connected | not connected |
* slots equipped with LFTX card the Alarm will be defined by: RF threshold alarm and LNB current Alarm defined by the software-limits * slots equipped with LFRX card the Alarm will be defined by: RF threshold alarm defined by software-limits and optical alarm. Remark: Software-limits configuration: <-90dBm will disable the Threshold Alarm for this interface.