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# MOTOROLA, INC.
EC 212A/D
Card Type Modem (asynchronous)
Chip Set Unidentified
Maximum Data Rate 1200bps
Data Bus External
Data Modulation Protocol Bell 212A
Error Correction Unidentified
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|------------------------------------------------------------|
| Line out | CN1 | Unidentified | R1 |
|---------------------------+----------+--------------+------|
| Line in | CN2 | Unidentified | SW1 |
|---------------------------+----------+--------------+------|
| RS-232/422 | CN3 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|----------------------------------------+-------+-----------|
| í Chassis ground connected to signal | JP1 | Pins 2 & |
| ground | | 3 closed |
|----------------------------------------+-------+-----------|
| Chassis ground not connected to signal | JP1 | Pins 1 & |
| ground | | 2 closed |
|----------------------------------------+-------+-----------|
| í Transmit level set to -9 | JP2 | Pins 2 & |
| (permissive) | | 3 closed |
|----------------------------------------+-------+-----------|
| Transmit level set to programmable | JP2 | Pins 1 & |
| | | 2 closed |
|----------------------------------------+-------+-----------|
| í Auto-dialer enabled | S2/1 | On |
|----------------------------------------+-------+-----------|
| Auto-dialer disabled | S2/1 | Off |
|----------------------------------------+-------+-----------|
| í XXXT<CR> escape sequence enabled | S2/2 | On |
|----------------------------------------+-------+-----------|
| XXXT<CR> escape sequence disabled | S2/2 | Off |
|----------------------------------------+-------+-----------|
| í Speed set to 1200bps when pin 23 of | S2/3 | On |
| RS-232 port is high | | |
|----------------------------------------+-------+-----------|
| Pin 23 of RS-232 port ignored | S2/3 | Off |
|----------------------------------------+-------+-----------|
| í Analog loopback test performed when | S2/4 | On |
| pin 25 of RS-232 port is high | | |
|----------------------------------------+-------+-----------|
| Pin 25 of RS-232 port ignored | S2/4 | Off |
|----------------------------------------+-------+-----------|
| í Disconnect modem on receipt of a | S3/3 | On |
| long space | | |
|----------------------------------------+-------+-----------|
| Do not disconnect modem on receipt of | S3/3 | Off |
| a long space | | |
|----------------------------------------+-------+-----------|
| í Do not transmit long space on | S3/4 | Off |
| disconnect | | |
|----------------------------------------+-------+-----------|
| Transmit long space on disconnect | S3/4 | On |
|----------------------------------------+-------+-----------|
| í Line will not be set busy during | S3/5 | Off |
| test modes | | |
|----------------------------------------+-------+-----------|
| Line will be set busy during test | S3/5 | On |
| modes | | |
|----------------------------------------+-------+-----------|
| DTR normal | S3/6 | On |
|----------------------------------------+-------+-----------|
| DTR forced high | S3/6 | Off |
|----------------------------------------+-------+-----------|
| í Disconnect after 150ms loss of | S3/7 | On |
| carrier | | |
|----------------------------------------+-------+-----------|
| Disconnect after 10s loss of carrier | S3/7 | Off |
|----------------------------------------+-------+-----------|
| í Auto-answer enabled | S3/8 | On |
|----------------------------------------+-------+-----------|
| Auto-answer disabled | S3/8 | Off |
|----------------------------------------+-------+-----------|
| í DTR flow control from modem to DTE | S4/1 | Off |
|----------------------------------------+-------+-----------|
| XON/XOFF flow control from modem to | S4/1 | On |
| DTE | | |
|----------------------------------------+-------+-----------|
| í DTE to modem flow control disabled | S4/2 | Off |
|----------------------------------------+-------+-----------|
| DTE to modem flow control enabled | S4/2 | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HANDSET POLARITY |
|------------------------------------------------------------|
| Setting | JP3 | JP4 |
|------------------+--------------------+--------------------|
| í Normal | Pins 2 & 3 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| Reversed | Pins 1 & 2 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ERROR CORRECTION MODE |
|------------------------------------------------------------|
| Setting | S3/1 | S3/2 |
|------------------------------+--------------+--------------|
| Error correction disabled | Off | Off |
|------------------------------+--------------+--------------|
| í Error correction enabled | On | Off |
|------------------------------+--------------+--------------|
| Auto-detect error correction | Off | On |
|------------------------------+--------------+--------------|
| Auto-detect error correction | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL MODE - MODEM TO DTE |
|------------------------------------------------------------|
| Setting | S4/3 | S4/4 |
|-----------------------+------------------+-----------------|
| í CTS flow control | Off | Off |
|-----------------------+------------------+-----------------|
| XON/XOFF flow control | On | Off |
|-----------------------+------------------+-----------------|
| Pin 11 of RS-232 port | Off | On |
|-----------------------+------------------+-----------------|
| Pin 11 of RS-232 port | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RCD OPERATION |
|------------------------------------------------------------|
| Setting | S4/5 | S4/6 |
|--------------------+-------------------+-------------------|
| RCD on | Off | Off |
|--------------------+-------------------+-------------------|
| RCD off | On | Off |
|--------------------+-------------------+-------------------|
| í RCD follows data | Off | On |
|--------------------+-------------------+-------------------|
| RCD follows data | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DATA FORMAT |
|------------------------------------------------------------|
| Setting | S4/7 | S4/8 |
|---------------------------+----------------+---------------|
| 7 data bits, mark parity | Off | Off |
|---------------------------+----------------+---------------|
| 7 data bits, even parity | On | Off |
|---------------------------+----------------+---------------|
| í 7 data bits, odd parity | Off | On |
|---------------------------+----------------+---------------|
| 8 data bits, no parity | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|------+-------+--------+------------------------------------|
| EC | Red | On | Error correction enabled |
|------+-------+--------+------------------------------------|
| EC | Red | Off | Error correction disabled |
|------+-------+--------+------------------------------------|
| TR | Red | On | DTR signal is high |
|------+-------+--------+------------------------------------|
| TR | Red | Off | DTR signal is low |
|------+-------+--------+------------------------------------|
| MR | Red | On | Power is on |
|------+-------+--------+------------------------------------|
| MR | Red | Off | Power is off |
|------+-------+--------+------------------------------------|
| TD | Red | On | Modem is transmitting data |
|------+-------+--------+------------------------------------|
| TD | Red | Off | Modem is not transmitting data |
|------+-------+--------+------------------------------------|
| RD | Red | On | Modem is receiving data |
|------+-------+--------+------------------------------------|
| RD | Red | Off | Modem is not receiving data |
|------+-------+--------+------------------------------------|
| HS | Red | On | Modem is operating at 1200bps |
|------+-------+--------+------------------------------------|
| HS | Red | Off | Modem is operating at 300bps |
|------+-------+--------+------------------------------------|
| CD | Red | On | Carrier signal detected |
|------+-------+--------+------------------------------------|
| CD | Red | Off | Carrier signal not detected |
|------+-------+--------+------------------------------------|
| TM | Red | On | Modem is in test mode |
|------+-------+--------+------------------------------------|
| TM | Red | Off | Modem is not in test mode |
+------------------------------------------------------------+