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# WESTERMO TELEINDUSTRI AB
MD-12
Card Type Modem
Chip Set Unidentified
I/O Options 9-pin serial port (RS-232), terminal blocks
(3)
Data Modulation ITU-T V.24/V.28
Protocol
Wiring Type Unshielded or shielded twisted pair
Maximum Data Rate 38.4Kbps
Data Bus External
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|-----------------------+-------+--------------------+-------|
| DCE serial port (9 | CN1 | Network interface | CN3 |
| pole terminal block) | | (4 pole terminal | |
| | | block) | |
|-----------------------+-------+--------------------+-------|
| AC power connector (3 | CN2 | 9-pin serial port | CN4 |
| pole terminal block) | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CARRIER CONTROL |
|------------------------------------------------------------|
| Setting | S1/1 | S1/2 | S1/3 |
|-----------------------------------+--------+-------+-------|
| í Carrier forced high | Off | On | Off |
|-----------------------------------+--------+-------+-------|
| Carrier activated by RTS | Off | On | On |
|-----------------------------------+--------+-------+-------|
| Carrier activated by DTR | On | Off | Off |
|-----------------------------------+--------+-------+-------|
| Carrier activated by DTR & RTS | On | Off | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CLEAR TO SEND CONTROL |
|------------------------------------------------------------|
| Setting | S1/4 | S1/5 | S1/6 |
|-----------------------------------+--------+-------+-------|
| í CTS controlled by RTS | On | Off | Off |
|-----------------------------------+--------+-------+-------|
| CTS forced high | Off | On | Off |
|-----------------------------------+--------+-------+-------|
| CTS follows DCD | Off | Off | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|-----+--------------+--------+------------------------------|
| PWR | Unidentified | On | Power is on |
|-----+--------------+--------+------------------------------|
| PWR | Unidentified | Off | Power is off |
|-----+--------------+--------+------------------------------|
| RD | Unidentified | On | Modem is receiving data |
|-----+--------------+--------+------------------------------|
| RD | Unidentified | Off | Modem is not receiving data |
|-----+--------------+--------+------------------------------|
| TD | Unidentified | On | Modem is transmitting data |
|-----+--------------+--------+------------------------------|
| TD | Unidentified | Off | Modem is not transmitting |
| | | | data |
|-----+--------------+--------+------------------------------|
| RTS | Unidentified | On | RTS signal is high |
|-----+--------------+--------+------------------------------|
| RTS | Unidentified | Off | RTS signal is low |
|-----+--------------+--------+------------------------------|
| DCD | Unidentified | On | Data carrier present |
|-----+--------------+--------+------------------------------|
| DCD | Unidentified | Off | Data carrier not present. |
| | | | Connection not established |
+------------------------------------------------------------+