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# RAD DATA COMMUNICATIONS
SRM-5AC
Modem Type Data (Asynchronous)
Maximum Data Rate 19.2Kbps
Data Bus External
Data Modulation Protocol Proprietary
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| RS-232 | CN1 | Ground | GND |
|------------------+----------+-------------------+----------|
| RJ-12/RJ-45 | CN2 | Transmit positive | +XMT |
|------------------+----------+-------------------+----------|
| Receive positive | +RCV | Transmit negative | -XMT |
|------------------+----------+-------------------+----------|
| Receive negative | -RCV | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CD SIGNAL |
|------------------------------------------------------------|
| Setting | JP1 |
|----------------------------+-------------------------------|
| » Forced high | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| Normal | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DCE/DTE SELECTOR |
|------------------------------------------------------------|
| Setting | SW1 |
|-------------------------------+----------------------------|
| » DCE | Off |
|-------------------------------+----------------------------|
| DTE | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|----------+----------+----------+---------------------------|
| CD | Red | On | CD signal is high |
|----------+----------+----------+---------------------------|
| CD | Red | Off | CD signal is low |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PRINTER/NORMAL SELECTION |
|------------------------------------------------------------|
| Setting | SW2 |
|-------------------------------+----------------------------|
| » Normal | Off |
|-------------------------------+----------------------------|
| Printer | On |
+------------------------------------------------------------+