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# PATTON ELECTRONICS COMPANY
285/285S
Card Type Short Range Modem
Chip Set Unidentified
I/O Options 25-pin serial port (RS-232),
network interface via RJ-45 (RJ-11 optional)
terminal block
Wiring Type Unshielded twisted pair
Maximum Data Rate 115.2Kbps
Data Bus External
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|------------------------------------------------------------|
| DTE/DCE serial port | CN1 | Twisted pair | CN2 |
| (25-pin connector) | | connection | |
| | | terminal blocks | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|----------------------------------------+-------+-----------|
| 8msec RTS/CTS delay | SW1/1 | On |
|----------------------------------------+-------+-----------|
| No RTS/CTS delay | SW1/1 | Off |
|----------------------------------------+-------+-----------|
| Echo enabled | SW1/2 | On |
|----------------------------------------+-------+-----------|
| Echo disabled | SW1/2 | Off |
|----------------------------------------+-------+-----------|
| Carrier controlled by RTS | SW1/3 | On |
|----------------------------------------+-------+-----------|
| Carrier forced high | SW1/3 | Off |
|----------------------------------------+-------+-----------|
| Low line impedance (120Ohm) | SW1/4 | On |
|----------------------------------------+-------+-----------|
| High line impedance (120K Ohm) | SW1/4 | Off |
|----------------------------------------+-------+-----------|
| 4 wire (full duplex mode) | SW2 | On |
|----------------------------------------+-------+-----------|
| 2 wire (half duplex mode) | SW2 | Off |
|----------------------------------------+-------+-----------|
| DTE mode | SW3 | On |
|----------------------------------------+-------+-----------|
| DCE mode | SW3 | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTES |
|------------------------------------------------------------|
| Patton Electronics model 285S is the surge protected |
| version of model 285 |
+------------------------------------------------------------+