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# 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
IMG IMG 1
+------------------------------------------------------------+
| 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 |
+------------------------------------------------------------+