(TXT) View Source
       
       # RAD DATA COMMUNICATIONS
       
          FOM-40
       
          Modem Type               Data (synchronous)                    
          Maximum Data Rate        2048Kbps                              
          Data Bus                 External                              
          Data Modulation Protocol Proprietary                           
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |    Purpose     | Location |       Purpose       | Location |
          |----------------+----------+---------------------+----------|
          | X.21/G.703     |   CN1    | Digital loopback    |   DIG    |
          |                |          | switch              |          |
          |----------------+----------+---------------------+----------|
          | AC/DC power    |   CN2    | Analog loopback     |   ANA    |
          |                |          | switch              |          |
          |----------------+----------+---------------------+----------|
          | Receive fiber  |    RX    | Remote loopback     |   REM    |
          |                |          | switch              |          |
          |----------------+----------+---------------------+----------|
          | Transmit fiber |    TX    | Test pattern        |   PATT   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      ANALOG LOOPBACK                       |
          |------------------------------------------------------------|
          | Setting                    |              JP6              |
          |----------------------------+-------------------------------|
          | Enabled                    |       Pins 1 & 2 closed       |
          |----------------------------+-------------------------------|
          | » Disabled                 |       Pins 2 & 3 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         BAUD RATE                          |
          |------------------------------------------------------------|
          | Setting                       |            SW1             |
          |-------------------------------+----------------------------|
          | 1.544Mbps                     |             0              |
          |-------------------------------+----------------------------|
          | 1.536Mbps                     |             1              |
          |-------------------------------+----------------------------|
          | 768Kbps                       |             2              |
          |-------------------------------+----------------------------|
          | 384Kbps                       |             3              |
          |-------------------------------+----------------------------|
          | 2.048Mbps                     |             4              |
          |-------------------------------+----------------------------|
          | 1.024Mbps                     |             5              |
          |-------------------------------+----------------------------|
          | 512Kbps                       |             6              |
          |-------------------------------+----------------------------|
          | 256Kbps                       |             7              |
          |-------------------------------+----------------------------|
          | 128Kbps                       |             8              |
          |-------------------------------+----------------------------|
          | » 64Kbps                      |             9              |
          |-------------------------------+----------------------------|
          | 112Kbps                       |             A              |
          |-------------------------------+----------------------------|
          | 56Kbps                        |             B              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         CD SIGNAL                          |
          |------------------------------------------------------------|
          | Setting                     |             JP2              |
          |-----------------------------+------------------------------|
          | » CD forced high            |       Pins 1 &2 closed       |
          |-----------------------------+------------------------------|
          | CD normal                   |      Pins 2 & 3 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CHASSIS TO SIGNAL GROUND                  |
          |------------------------------------------------------------|
          | Setting                    |              JP5              |
          |----------------------------+-------------------------------|
          | » Connected                |       Pins 1 & 2 closed       |
          |----------------------------+-------------------------------|
          | Disconnected               |       Pins 2 & 3 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        CLOCK SOURCE                        |
          |------------------------------------------------------------|
          | Setting       |    JP1/A     |    JP1/B     |    JP1/C     |
          |---------------+--------------+--------------+--------------|
          | External      |    Closed    |     Open     |     Open     |
          |---------------+--------------+--------------+--------------|
          | » Internal    |     Open     |    Closed    |     Open     |
          |---------------+--------------+--------------+--------------|
          | Receive       |     Open     |     Open     |    Closed    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                           RANGE                            |
          |------------------------------------------------------------|
          | Setting                    |              JP3              |
          |----------------------------+-------------------------------|
          | Long                       |       Pins 1 & 2 closed       |
          |----------------------------+-------------------------------|
          | » Short                    |       Pins 2 & 3 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      REMOTE LOOPBACK                       |
          |------------------------------------------------------------|
          | Setting                    |              JP7              |
          |----------------------------+-------------------------------|
          | Enabled                    |       Pins 1 & 2 closed       |
          |----------------------------+-------------------------------|
          | » Disabled                 |       Pins 2 & 3 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         V.54 DELAY                         |
          |------------------------------------------------------------|
          | Setting                    |              JP4              |
          |----------------------------+-------------------------------|
          | » NO                       |       Pins 1 & 2 closed       |
          |----------------------------+-------------------------------|
          | YES                        |       Pins 2 & 3 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DIAGNOSTIC LED(S)                      |
          |------------------------------------------------------------|
          | LED  | Color  |  Status  |            Condition            |
          |------+--------+----------+---------------------------------|
          | PWR  | Green  |    On    |           Power is on           |
          |------+--------+----------+---------------------------------|
          | PWR  | Green  |   Off    |          Power is off           |
          |------+--------+----------+---------------------------------|
          | RTS  | Yellow |    On    |     Request to Send enabled     |
          |------+--------+----------+---------------------------------|
          | RTS  | Yellow |   Off    |    Request to Send disabled     |
          |------+--------+----------+---------------------------------|
          |  TD  | Yellow |    On    |  Modem is transmitting steady   |
          |      |        |          |              SPACE              |
          |------+--------+----------+---------------------------------|
          |  TD  | Yellow |   Off    | Modem is not transmitting data  |
          |------+--------+----------+---------------------------------|
          |  TD  | Yellow | Blinking |   Modem is transmitting data    |
          |------+--------+----------+---------------------------------|
          |  RD  | Yellow |    On    | Modem is receiving steady SPACE |
          |------+--------+----------+---------------------------------|
          |  RD  | Yellow |   Off    |   Modem is not receiving data   |
          |------+--------+----------+---------------------------------|
          |  RD  | Yellow | Blinking |     Modem is receiving data     |
          |------+--------+----------+---------------------------------|
          | DCD  | Yellow |    On    |     Carrier signal detected     |
          |------+--------+----------+---------------------------------|
          | DCD  | Yellow |   Off    |   Carrier signal not detected   |
          |------+--------+----------+---------------------------------|
          | TEST |  Red   |    On    |       Modem in test mode        |
          |------+--------+----------+---------------------------------|
          | TEST |  Red   |   Off    |     Modem not in test mode      |
          |------+--------+----------+---------------------------------|
          | ERR  | Yellow |    On    |     Errors in test pattern      |
          |------+--------+----------+---------------------------------|
          | ERR  | Yellow |   Off    |        Good test pattern        |
          +------------------------------------------------------------+