RAD DATA COMMUNICATIONS
=======================

   FOM-400

   Card Type           T1/E1 signal converter                     
   Chipset             Unidentified                               
   Topology            Peer-Peer                                  
   Wire Type           Fiber optic cable                          
   T1/E1 Transfer Rate 1.544Mbps/2.048Mbps                        
   T1/E1 Protocol      AMI, HDB3                                  
   Frame Type          Unidentified                               
   Data Bus            Proprietary                                

<gopher://bitreich.org/I/th99/t/P-R/53335-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |       Function       | Label |      Function       | Label |
   |----------------------+-------+---------------------+-------|
   | T1/E1 line in        |  CN1  | Primary fiber optic |  CN6  |
   |                      |       | transmit connector  |       |
   |----------------------+-------+---------------------+-------|
   | T1/E1 line out       |  CN2  | Control port (see   |  CN7  |
   |                      |       | pinout below)       |       |
   |----------------------+-------+---------------------+-------|
   | Secondary fiber      |  CN3  | DC power in         |  CN8  |
   | optic receive        |       |                     |       |
   | connector            |       |                     |       |
   |----------------------+-------+---------------------+-------|
   | Secondary fiber      |  CN4  | AC power in         |  CN9  |
   | optic transmit       |       |                     |       |
   | connector            |       |                     |       |
   |----------------------+-------+---------------------+-------|
   | Primary fiber optic  |  CN5  | Power switch        |  SW1  |
   | receive connector    |       |                     |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         CN7 PINOUT                         |
   |------------------------------------------------------------|
   |     Function     | Pin |          Function           | Pin |
   |------------------+-----+-----------------------------+-----|
   | Chassis ground   |  1  | Primary/secondary fiber     | 14  |
   |                  |     | optic channel indicator     |     |
   |                  |     | signal                      |     |
   |------------------+-----+-----------------------------+-----|
   | Not used         |  2  | Not used                    | 15  |
   |------------------+-----+-----------------------------+-----|
   | Not used         |  3  | T1/E1 connection broken     | 16  |
   |                  |     | relay                       |     |
   |------------------+-----+-----------------------------+-----|
   | T1/E1 connection |  4  | Not used                    | 17  |
   | broken signal    |     |                             |     |
   |------------------+-----+-----------------------------+-----|
   | Not used         |  5  | Not used                    | 18  |
   |------------------+-----+-----------------------------+-----|
   | Not used         |  6  | T1/E1 connection broken     | 19  |
   |                  |     | relay                       |     |
   |------------------+-----+-----------------------------+-----|
   | Signal ground    |  7  | Alarm condition signal      | 20  |
   |------------------+-----+-----------------------------+-----|
   | Not used         |  8  | Not used                    | 21  |
   |------------------+-----+-----------------------------+-----|
   | Not used         |  9  | Primary/secondary fiber     | 22  |
   |                  |     | optic channel selection     |     |
   |------------------+-----+-----------------------------+-----|
   | Not used         | 10  | Secondary fiber optic       | 23  |
   |                  |     | connection broken signal    |     |
   |------------------+-----+-----------------------------+-----|
   | Not used         | 11  | Not used                    | 24  |
   |------------------+-----+-----------------------------+-----|
   | Not used         | 12  | Primary fiber optic         | 25  |
   |                  |     | connection broken signal    |     |
   |------------------+-----+-----------------------------+-----|
   | Not used         | 13  | Not used                    |     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Setting                 | Label | Position  |
   |----------------------------------------+-------+-----------|
   | Signal ground connected to chassis     |  JP1  | Pins 1 &  |
   | ground                                 |       | 2 closed  |
   |----------------------------------------+-------+-----------|
   | Signal ground not connected to chassis |  JP1  | Pins 2 &  |
   | ground                                 |       | 3 closed  |
   |----------------------------------------+-------+-----------|
   | Primary fiber optic channel set for    |  SW2  |    On     |
   | short-range operation                  |       |           |
   |----------------------------------------+-------+-----------|
   | Primary fiber optic channel set for    |  SW2  |    Off    |
   | long-range operation                   |       |           |
   |----------------------------------------+-------+-----------|
   | Secondary fiber optic channel set for  |  SW3  |    On     |
   | short-range operation                  |       |           |
   |----------------------------------------+-------+-----------|
   | Secondary fiber optic channel set for  |  SW3  |    Off    |
   | long-range operation                   |       |           |
   |----------------------------------------+-------+-----------|
   | T1/E1 interface set for 100ohm or      |  SW4  |    On     |
   | 120ohm balanced cable                  |       |           |
   |----------------------------------------+-------+-----------|
   | T1/E1 interface set for 75ohm          |  SW4  |    Off    |
   | unbalanced cable                       |       |           |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               FIBER OPTIC CHANNEL SELECTION                |
   |------------------------------------------------------------|
   |               Setting                |         SW5         |
   |--------------------------------------+---------------------|
   |>> | Channel selected by control port |     Position 2      |
   |---+----------------------------------+---------------------|
   |   |      Primary channel active      |     Position 1      |
   |---+----------------------------------+---------------------|
   |   |     Secondary channel active     |     Position 3      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIAGNOSTIC LED(S)                      |
   |------------------------------------------------------------|
   |  LED  | Color  | Status |            Condition             |
   |-------+--------+--------+----------------------------------|
   | LED1  | Green  |   On   | AC power source is connected at  |
   |       |        |        |               CN9                |
   |-------+--------+--------+----------------------------------|
   | LED1  | Green  |  Off   | AC power source is not connected |
   |       |        |        |              at CN9              |
   |-------+--------+--------+----------------------------------|
   | LED2  | Green  |   On   | Backup DC power is connected to  |
   |       |        |        |               CN8                |
   |-------+--------+--------+----------------------------------|
   | LED2  | Green  |  Off   | Backup DC power is not connected |
   |       |        |        |              to CN8              |
   |-------+--------+--------+----------------------------------|
   | LED3  |  Red   |   On   |   Internal power supply failed   |
   |-------+--------+--------+----------------------------------|
   | LED3  |  Red   |  Off   | Internal power supplies are good |
   |-------+--------+--------+----------------------------------|
   | LED4  | Green  |   On   |      DSU is receiving data       |
   |-------+--------+--------+----------------------------------|
   | LED4  | Green  |  Off   |    DSU is not receiving data     |
   |-------+--------+--------+----------------------------------|
   | LED5  | Green  |   On   |     DSU is transmitting data     |
   |-------+--------+--------+----------------------------------|
   | LED5  | Green  |  Off   |   DSU is not transmitting data   |
   |-------+--------+--------+----------------------------------|
   | LED6  |  Red   |   On   | Fiber optic synchronization lost |
   |-------+--------+--------+----------------------------------|
   | LED6  |  Red   |  Off   | Fiber optic synchronization good |
   |-------+--------+--------+----------------------------------|
   | LED7  | Yellow |   On   |  Primary fiber optic channel in  |
   |       |        |        |               use                |
   |-------+--------+--------+----------------------------------|
   | LED7  | Yellow |  Off   | Primary fiber optic channel not  |
   |       |        |        |              in use              |
   |-------+--------+--------+----------------------------------|
   | LED8  |  Red   |   On   |   Primary fiber optic channel    |
   |       |        |        |  receive level less than -39dBm  |
   |-------+--------+--------+----------------------------------|
   | LED8  |  Red   |  Off   |   Primary fiber optic channel    |
   |       |        |        |  receive level more than -39dBm  |
   |-------+--------+--------+----------------------------------|
   | LED9  | Yellow |   On   | Secondary fiber optic channel in |
   |       |        |        |               use                |
   |-------+--------+--------+----------------------------------|
   | LED9  | Yellow |  Off   |  Secondary fiber optic channel   |
   |       |        |        |            not in use            |
   |-------+--------+--------+----------------------------------|
   | LED10 |  Red   |   On   |  Secondary fiber optic channel   |
   |       |        |        |  receive level less than -39dBm  |
   |-------+--------+--------+----------------------------------|
   | LED10 |  Red   |  Off   |  Secondary fiber optic channel   |
   |       |        |        |  receive level more than -39dBm  |
   +------------------------------------------------------------+