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

   FCD-12

   Card Type        T1 CSU/DSU                                    
   Chip Set         Unidentified                                  
   I/O Options      AC power connector, 25-pin DTE/DCE ports (2), 
                                                                  
                    9-pin serial port (RS-232), T1 network        
                    interface via 15-pin connector                
   T1 Transfer Rate 1.544Mbps                                     
   T1 Protocol      Transparent, AMI, B7ZS, B8ZS                  
   Frame Type       D4, ESF                                       
   Data Bus         External                                      

<gopher://bitreich.org/I/th99/t/P-R/54852-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |       Function       | Label |      Function       | Label |
   |----------------------+-------+---------------------+-------|
   | AC power connector   |  CN1  | CSU board connector |  J2   |
   |----------------------+-------+---------------------+-------|
   | Serial port          |  CN2  | CSU board connector |  J3   |
   |----------------------+-------+---------------------+-------|
   | 25-pin DTE/DCE port  |  CN3  | CSU board connector |  J4   |
   | - channel 2          |       |                     |       |
   |----------------------+-------+---------------------+-------|
   | 25-pin DTE/DCE port  |  CN4  | Power switch        |  SW2  |
   | - channel 1          |       |                     |       |
   |----------------------+-------+---------------------+-------|
   | 15-pin T1 port       |  CN5  |                     |       |
   |------------------------------------------------------------|
   | Note:                                                      |
   |                                                            |
   | Jumpers must be installed on pins 1&2 and 3&4 of           |
   | connectors J3 & J4 to maintain signal path continuity when |
   | the CSU board is removed.                                  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Setting                | Label |  Position  |
   |---------------------------------------+-------+------------|
   |>> | Debug self test mode disabled     |  JP2  | Pins 1 & 2 |
   |   |                                   |       |   closed   |
   |---+-----------------------------------+-------+------------|
   |   | Debug self test mode enabled      |  JP2  | Pins 2 & 3 |
   |   |                                   |       |   closed   |
   |---+-----------------------------------+-------+------------|
   |>> | Default password enabled.         |  JP3  | Pins 2 & 3 |
   |   | Password=FCD-12                   |       |   closed   |
   |---+-----------------------------------+-------+------------|
   |   | User password enabled             |  JP3  | Pins 1 & 2 |
   |   |                                   |       |   closed   |
   |---+-----------------------------------+-------+------------|
   |>> | Watchdog timer enabled            |  JP5  | Pins 1 & 2 |
   |   |                                   |       |   closed   |
   |---+-----------------------------------+-------+------------|
   |   | Watchdog timer disabled           |  JP5  | Pins 2 & 3 |
   |   |                                   |       |   closed   |
   |---+-----------------------------------+-------+------------|
   |>> | Signal ground is connected to the | JP11  | Pins 2 & 3 |
   |   | frame ground                      |       |   closed   |
   |---+-----------------------------------+-------+------------|
   |   | Signal ground is not connected to | JP11  | Pins 1 & 2 |
   |   | the frame ground                  |       |   closed   |
   |---+-----------------------------------+-------+------------|
   |>> | Internal -5V enabled              | JP20  | Pins 1 & 2 |
   |   |                                   |       |   closed   |
   |---+-----------------------------------+-------+------------|
   |   | Grounded to pin 15 in the main    | JP20  | Pins 2 & 3 |
   |   | link connector (CN5)              |       |   closed   |
   |---+-----------------------------------+-------+------------|
   |>> | Allows connection of the line     | JP23  |   Closed   |
   |   | controlled by JP20 to pin 15 of   |       |            |
   |   | main link connector (CN5) for     |       |            |
   |   | powering external device          |       |            |
   |---+-----------------------------------+-------+------------|
   |   | Does not allow connection of the  | JP23  |    Open    |
   |   | line controlled by JP20 to pin 15 |       |            |
   |   | of main link connector (CN5) for  |       |            |
   |   | powering external device          |       |            |
   |---+-----------------------------------+-------+------------|
   |>> | Allows connection of internal     | JP24  |   Closed   |
   |   | +5V, via resistor, to pin 14 of   |       |            |
   |   | main link connector (CN5) for     |       |            |
   |   | powering external device          |       |            |
   |---+-----------------------------------+-------+------------|
   |   | Does not allow connection of      | JP24  |    Open    |
   |   | internal +5V, via resistor, to    |       |            |
   |   | pin 14 of main link connector     |       |            |
   |   | (CN5) for powering external       |       |            |
   |   | device                            |       |            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               CHANNEL 1 INTERFACE SELECTION                |
   |------------------------------------------------------------|
   |           interface           |          Setting           |
   |-------------------------------+----------------------------|
   |>> | RS-530, X.21, RS-449,     | Interface changer board on |
   |   | RS-422                    |             J6             |
   |---+---------------------------+----------------------------|
   |   | V.35                      | Interface changer board on |
   |   |                           |             J7             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               CHANNEL 2 INTERFACE SELECTION                |
   |------------------------------------------------------------|
   |           interface           |          Setting           |
   |-------------------------------+----------------------------|
   |>> | RS-530, X.21, RS-449,     | Interface changer board on |
   |   | RS-422                    |             J8             |
   |---+---------------------------+----------------------------|
   |   | V.35                      | Interface changer board on |
   |   |                           |             J9             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIAGNOSTIC LED(S)                      |
   |------------------------------------------------------------|
   |   LED    |    Color     | Status |        Condition        |
   |----------+--------------+--------+-------------------------|
   |   TD1    | Unidentified |   On   |  DSU/CSU is detecting   |
   |          |              |        | pulses from the DTE on  |
   |          |              |        |        channel 1        |
   |----------+--------------+--------+-------------------------|
   |   TD1    | Unidentified |  Off   |     DSU/CSU is not      |
   |          |              |        |  detecting pulses from  |
   |          |              |        |    DTE on channel 1     |
   |----------+--------------+--------+-------------------------|
   |   RD1    | Unidentified |   On   |  DSU/CSU is receiving   |
   |          |              |        | pulses from network on  |
   |          |              |        |        channel 1        |
   |----------+--------------+--------+-------------------------|
   |   RD1    | Unidentified |  Off   |     DSU/CSU is not      |
   |          |              |        |  receiving pulses from  |
   |          |              |        |  network on channel 1   |
   |----------+--------------+--------+-------------------------|
   |   TD2    | Unidentified |   On   |  DSU/CSU is detecting   |
   |          |              |        | pulses from the DTE on  |
   |          |              |        |        channel 2        |
   |----------+--------------+--------+-------------------------|
   |   TD2    | Unidentified |  Off   |     DSU/CSU is not      |
   |          |              |        |  detecting pulses from  |
   |          |              |        |    DTE on channel 2     |
   |----------+--------------+--------+-------------------------|
   |   RD2    | Unidentified |   On   |  DSU/CSU is receiving   |
   |          |              |        | pulses from network on  |
   |          |              |        |        channel 2        |
   |----------+--------------+--------+-------------------------|
   |   RD2    | Unidentified |  Off   |     DSU/CSU is not      |
   |          |              |        |  receiving pulses from  |
   |          |              |        |  network on channel 2   |
   |----------+--------------+--------+-------------------------|
   |   RED    | Unidentified |   On   | DSU/CSU is detecting a  |
   |          |              |        |   red alarm condition   |
   |----------+--------------+--------+-------------------------|
   |   RED    | Unidentified |  Off   |     DSU/CSU is not      |
   |          |              |        |  detecting a red alarm  |
   |          |              |        |        condition        |
   |----------+--------------+--------+-------------------------|
   |   YEL    | Unidentified |   On   | DSU/CSU is detecting a  |
   |          |              |        | yellow alarm condition  |
   |----------+--------------+--------+-------------------------|
   |   YEL    | Unidentified |  Off   |     DSU/CSU is not      |
   |          |              |        |   detecting a yellow    |
   |          |              |        |     alarm condition     |
   |----------+--------------+--------+-------------------------|
   |      TST | Unidentified |   On   |   DSU or CSU loopback   |
   |          |              |        |       test active       |
   |----------+--------------+--------+-------------------------|
   |   TST    | Unidentified |  Off   |   DSU or CSU loopback   |
   |          |              |        |    test not running     |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/t/P-R/54852-2.png>
   

   CSU BOARD

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |       Function       | Label |      Function       | Label |
   |----------------------+-------+---------------------+-------|
   | Mainboard connector  |  J5   | Mainboard connector |  J7   |
   |----------------------+-------+---------------------+-------|
   | Mainboard connector  |  J6   |                     |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 T1 OUTPUT LEVEL SELECTION                  |
   |------------------------------------------------------------|
   |             Net build              |  Label  |  Position   |
   |------------------------------------+---------+-------------|
   |>> |              0dB               |   SW1   |      1      |
   |---+--------------------------------+---------+-------------|
   |   |             -7.5dB             |   SW1   |      2      |
   |---+--------------------------------+---------+-------------|
   |   |             -15dB              |   SW1   |      3      |
   +------------------------------------------------------------+