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

   ACD-2

   Card Type           CSU/DSU                                    
   NIC Type            DDS                                        
   Chip Set            Unidentified                               
   I/O Options         AC power connector, 25-pin connector,      
                                                                  
                       network interface via RJ-48 connector      
   Wiring Type         RJ-48 120ohm shielded twisted pair         
   Maximum Data Rate   56Kbps                                     
   Data Bus            External                                   

<gopher://bitreich.org/I/th99/t/P-R/54869-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |      Function       | Label |       Function       | Label |
   |---------------------+-------+----------------------+-------|
   | AC power connector  |  CN1  | Network interface    |  CN3  |
   |                     |       | via RJ-48 connector  |       |
   |---------------------+-------+----------------------+-------|
   | DTE/DCE serial port |  CN2  | Unidentified         |  J2C  |
   | (25-pin connector)  |       |                      |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Setting                | Label |  Position  |
   |---------------------------------------+-------+------------|
   |>> | Signal ground is connected to the |  JP1  | Pins 2 & 3 |
   |   | frame ground                      |       |   closed   |
   |---+-----------------------------------+-------+------------|
   |   | Signal ground is not connected to |  JP1  | Pins 1 & 2 |
   |   | the frame ground                  |       |   closed   |
   |---+-----------------------------------+-------+------------|
   |   | CTS forced high; RTS is ignored   | SW2/4 |     On     |
   |---+-----------------------------------+-------+------------|
   |   | CTS follows RTS                   | SW2/4 |    Off     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       DTE INTERFACE                        |
   |------------------------------------------------------------|
   |    Function    |  J1A, J1B  |    J2A, J2B     |  J3A, J3B  |
   |----------------+------------+-----------------+------------|
   |>> |    V.35    |   Board    |      Open       |    Open    |
   |   | interface  | connected  |                 |            |
   |---+------------+------------+-----------------+------------|
   |   |   RS-422   |    Open    |        Board    |    Open    |
   |   | interface  |            |      connected  |            |
   |---+------------+------------+-----------------+------------|
   |   |   RS-232   |    Open    |         Open    |   Board    |
   |   | interface  |            |                 | connected  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                         DATA RATE                          |
   |------------------------------------------------------------|
   |     Setting      |    SW2/1    |    SW2/2    |    SW2/3    |
   |------------------+-------------+-------------+-------------|
   |     2400bps      |     On      |     On      |     On      |
   |------------------+-------------+-------------+-------------|
   |     4800bps      |     Off     |     On      |     On      |
   |------------------+-------------+-------------+-------------|
   |     9600bps      |     On      |     Off     |     On      |
   |------------------+-------------+-------------+-------------|
   |     19.2Kbps     |     Off     |     Off     |     On      |
   |------------------+-------------+-------------+-------------|
   |     56.0Kbps     |     On      |     On      |     Off     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       TEST SELECTOR                        |
   |------------------------------------------------------------|
   |                Function                 | Label | Position |
   |-----------------------------------------+-------+----------|
   |       Digital loopback initiated        |  SW1  |    1     |
   |-----------------------------------------+-------+----------|
   |     Normal operation. Loopback not      |  SW1  |    2     |
   |                activated                |       |          |
   |-----------------------------------------+-------+----------|
   |     Activates local analog loopback     |  SW1  |    3     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIAGNOSTIC LED(S)                      |
   |------------------------------------------------------------|
   | LED | Color  | Status |             Condition              |
   |-----+--------+--------+------------------------------------|
   | PWR | Green  |   On   |            Power is on             |
   |-----+--------+--------+------------------------------------|
   | PWR | Green  |  Off   |            Power is off            |
   |-----+--------+--------+------------------------------------|
   | RTS | Yellow |   On   |         RTS signal is high         |
   |-----+--------+--------+------------------------------------|
   | RTS | Yellow |  Off   |         RTS signal is low          |
   |-----+--------+--------+------------------------------------|
   | CTS | Yellow |   On   |         CTS signal is high         |
   |-----+--------+--------+------------------------------------|
   | CTS | Yellow |  Off   |         CTS signal is low          |
   |-----+--------+--------+------------------------------------|
   | DCD | Yellow |   On   |         DCD signal is high         |
   |-----+--------+--------+------------------------------------|
   | DCD | Yellow |  Off   |         DCD signal is low          |
   |-----+--------+--------+------------------------------------|
   | TD  | Yellow |   On   | Data is being transmitted by local |
   |     |        |        |                DTE                 |
   |-----+--------+--------+------------------------------------|
   | TD  | Yellow |  Off   |  Data is not being transmitted by  |
   |     |        |        |             local DTE              |
   |-----+--------+--------+------------------------------------|
   | RD  | Yellow |   On   | Data is being received from remote |
   |     |        |        |                DTE                 |
   |-----+--------+--------+------------------------------------|
   | RD  | Yellow |  Off   |  Data is not being received from   |
   |     |        |        |             remote DTE             |
   |-----+--------+--------+------------------------------------|
   | ALM |  Red   |   On   |     OOS or OOF alarm condition     |
   |     |        |        |        detected on network         |
   |-----+--------+--------+------------------------------------|
   | ALM |  Red   |  Off   |   OOS or OOF alarm condition not   |
   |     |        |        |        detected on network         |
   |-----+--------+--------+------------------------------------|
   | TST |  Red   |   On   |    Device is conducting a test     |
   |-----+--------+--------+------------------------------------|
   | TST |  Red   |  Off   |  Device is not conducting a test   |
   +------------------------------------------------------------+