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# PATTON ELECTRONICS COMPANY
2450
Card Type CSU/DSU
Chip Set Unidentified
I/O Options Power, DTE/DCE serial port, network
interface via RJ-48 connector
Maximum Data Rate 64Kbps
Data Bus External
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|------------------+--------+-----------------------+--------|
| Power connector | CN1 | Network interface via | CN3 |
| | | RJ-48 connector | |
|------------------+--------+-----------------------+--------|
| DTE/DCE port | CN2 | | |
| (quick connect | | | |
| module) | | | |
|------------------------------------------------------------|
| Note: Quick connect serial interface module can be |
| configured as a V.24/RS-232, V.35, RS422/530, or X.21 |
| port. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|-----------------------------------------+-------+----------|
| » | Circuit assurance disabled. | S1/3 | Off |
| | Transmitter and CTS will operate | | |
| | independent of receiver state | | |
|---+-------------------------------------+-------+----------|
| | Circuit assurance enabled. CTS will | S1/3 | On |
| | go low and the transmitter will be | | |
| | held off if the receiver is in the | | |
| | No signal state or CD is low | | |
|---+-------------------------------------+-------+----------|
| » | RTS forced high | S1/4 | On |
|---+-------------------------------------+-------+----------|
| | RTS follows DTE signal | S1/4 | Off |
|---+-------------------------------------+-------+----------|
| » | 56Kbps mode | S1/5 | Off |
|---+-------------------------------------+-------+----------|
| | 64Kbps mode | S1/5 | On |
|---+-------------------------------------+-------+----------|
| » | Front panel switches enabled | S1/6 | Off |
|---+-------------------------------------+-------+----------|
| | Front panel switches disabled | S1/6 | On |
|---+-------------------------------------+-------+----------|
| » | Modem ignores loopback requests | S1/7 | On |
| | from DTE | | |
|---+-------------------------------------+-------+----------|
| | Modem responds to local analog | S1/7 | Off |
| | loopback requests from DTE | | |
|---+-------------------------------------+-------+----------|
| » | Modem ignores loopback requests | S1/8 | On |
| | from remote | | |
|---+-------------------------------------+-------+----------|
| | Modem responds to loopback requests | S1/8 | Off |
| | from remote | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TRANSMIT CLOCK SOURCE |
|------------------------------------------------------------|
| Source | S1/1 | S1/2 |
|----------------------------------------------+------+------|
| » | Transmit clock derived from receive line | Off | On |
| | signal. Dedicated DDS operation | | |
|---+------------------------------------------+------+------|
| | Transmit clock derived from receive line | On | On |
| | signal. Allows remote device to initiate | | |
| | loopback. | | |
|---+------------------------------------------+------+------|
| | Transmit clock generated internally | Off | Off |
|---+------------------------------------------+------+------|
| | Transmit clock derived from terminal | On | Off |
| | interface | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LOOPBACK TEST SELECTOR |
|------------------------------------------------------------|
| Function | Label | Position |
|-----------------------------------------+-------+----------|
| Remote digital loopback initiated | SW4 | 1 |
|-----------------------------------------+-------+----------|
| Normal operation. Loopback not | SW4 | 2 |
| activated | | |
|-----------------------------------------+-------+----------|
| Activates local analog loopback | SW4 | 3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TEST PATTERN GENERATOR |
|------------------------------------------------------------|
| Function | Label | Position |
|-----------------------------------------+-------+----------|
| 511/E test pattern transmitted | SW5 | 1 |
| (intentional errors inserted) | | |
|-----------------------------------------+-------+----------|
| Normal operation. Test pattern not | SW5 | 2 |
| activated | | |
|-----------------------------------------+-------+----------|
| 511 test pattern transmitted | SW5 | 3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|-----+-------+--------+-------------------------------------|
| TD | Red | On | Data is being transmitted (low |
| | | | logic level, device idle) |
|-----+-------+--------+-------------------------------------|
| TD | Green | On | Data is being transmitted (high |
| | | | logic level) |
|-----+-------+--------+-------------------------------------|
| TD | None | Off | Data is not being transmitted |
|-----+-------+--------+-------------------------------------|
| RD | Red | On | Data is being received (low logic |
| | | | level, device idle) |
|-----+-------+--------+-------------------------------------|
| RD | Green | On | Data is being received (high logic |
| | | | level) |
|-----+-------+--------+-------------------------------------|
| RD | None | Off | Data is not being received |
|-----+-------+--------+-------------------------------------|
| CD | Green | On | Carrier signal detected |
|-----+-------+--------+-------------------------------------|
| CD | Red | On | Carrier signal not detected |
|-----+-------+--------+-------------------------------------|
| NS | Red | On | No valid carrier |
|-----+-------+--------+-------------------------------------|
| NS | Red | Off | Valid signal detected from remote |
| | | | modem or digital service provider |
|-----+-------+--------+-------------------------------------|
| ER | Red | On | Bit error likely in received signal |
| | | | or error detected in the test |
| | | | pattern |
|-----+-------+--------+-------------------------------------|
| ER | Red | Off | Error not detected |
|-----+-------+--------+-------------------------------------|
| TM | Red | On | Device has been placed in test mode |
| | | | by local or remote user |
|-----+-------+--------+-------------------------------------|
| TM | Red | Off | Device is not conducting a test |
+------------------------------------------------------------+