The Alarm and data connectors of the L-Band Switch Matrix all are located at the rear side right hand of the enclosure. The figure below illustrates the location of the connectors and the pin out.
The LED PS shows the presence of one or two power supply(ies), The LNK LED turns on, when there is some traffic on the LAN, the matrix is connected to.
To release the MNC board, open the srews with which the card is fixed at the mounting rail. Now turn in the screw into the screw thread beside to push the card out of its socket. After that you can pull the card out of the unit.
To install the MNC board again, put it into the slide rail until the frontplate of the card contacts the mounting rail. Please pay attention: The board has to slide in smoothly. If not, pull the card out and try again. Otherwise the connector on the MNC board or on the backplane might be damaged.
After that fix the card with the provided screws to ensure a proper contacting of the connectors on the MNC board with the connectors on the backplane.
J1.1 Alarm connnector
| Pin | Alarm contacts (DSUB-9 male) | **** |
|---|---|---|
| 1 | NC1 | closed if ok, open in fault state |
| 2 | COM1 | common for fault relay 1.te .ts 3 |
| 4 | not connected | |
| 5 | not connected | |
| 6 | NC2 | closed if ok, open in fault state |
| 7 | COM2 | common for fault relay 2.te .ts 8 |
| 9 | not connected |
J1.3 Serial connnector
| Pin | RS232 serial interface (DCE) (DSUB-9 female} |
|---|---|
| 1 | not connected |
| 2 | TxD (output) |
| 3 | RxD (input) |
| 4 | internally bridged to pin 6 |
| 5 | GND |
| 6 | internally bridged to pin 4 |
| 7 | internally bridged to pin 8 |
| 8 | internally bridged to pin 7 |
| 9 | not connected |
J1.2 Network Connector
| Ethernet 10/100Base-T |
|---|
| RJ45 |