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# RAD DATA COMMUNICATIONS
ASM-45
Modem Type Data (Synchronous)
Maximum Data Rate 768Kbps
Data Bus External
Data Modulation Protocol Proprietary
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| V.35/X.21/RS-530 | CN1 | Fuse | FUSE |
|------------------+----------+-------------------+----------|
| AC power | CN2 | Digital loopback | DIG |
| | | switch | |
|------------------+----------+-------------------+----------|
| Ground | GND | Analog loopback | ANA |
| | | switch | |
|------------------+----------+-------------------+----------|
| Receive | RCV | Remote loopback | REM |
| | | switch | |
|------------------+----------+-------------------+----------|
| Transmit | XMT | Test pattern | PATT |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ANALOG LOOPBACK |
|------------------------------------------------------------|
| Setting | JP5 |
|----------------------------+-------------------------------|
| Enabled | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| » Disabled | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BAUD RATE |
|------------------------------------------------------------|
| Setting | JP1/A | JP1/B | JP1/C | JP1/D | JP1/E |
|-----------+---------+---------+---------+---------+--------|
| 768Kbps | Closed | Open | Open | Open | Open |
|-----------+---------+---------+---------+---------+--------|
| 512Kbps | Open | Closed | Open | Open | Open |
|-----------+---------+---------+---------+---------+--------|
| 384Kbps | Open | Open | Closed | Open | Open |
|-----------+---------+---------+---------+---------+--------|
| » 256Kbps | Open | Open | Open | Closed | Open |
|-----------+---------+---------+---------+---------+--------|
| 128Kbps | Open | Open | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CD SIGNAL |
|------------------------------------------------------------|
| Setting | JP3 |
|-----------------------------+------------------------------|
| CD normal | Pins 2 & 3 closed |
|-----------------------------+------------------------------|
| » CD forced high | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CHASSIS TO SIGNAL GROUND |
|------------------------------------------------------------|
| Setting | JP9 |
|----------------------------+-------------------------------|
| » Connected | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| Disconnected | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CLOCK SOURCE |
|------------------------------------------------------------|
| Setting | JP2/A | JP2/B | JP2/C |
|---------------+--------------+--------------+--------------|
| External | Closed | Open | Open |
|---------------+--------------+--------------+--------------|
| » Internal | Open | Closed | Open |
|---------------+--------------+--------------+--------------|
| Receive | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REMOTE LOOPBACK |
|------------------------------------------------------------|
| Setting | JP6 |
|----------------------------+-------------------------------|
| Enabled | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| » Disabled | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TRANSMIT LEVEL |
|------------------------------------------------------------|
| Setting | JP4 |
|----------------------------+-------------------------------|
| » 0dBm | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| -6dBm | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.54 DELAY |
|------------------------------------------------------------|
| Setting | JP7 |
|----------------------------+-------------------------------|
| » Off | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| On | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| X.21 CLOCK SOURCE |
|------------------------------------------------------------|
| Setting | JP8 |
|----------------------------+-------------------------------|
| External | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| » Internal | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|------+--------+----------+---------------------------------|
| PWR | Green | On | Power is on |
|------+--------+----------+---------------------------------|
| PWR | Green | Off | Power is off |
|------+--------+----------+---------------------------------|
| RTS | Yellow | On | Request to Send enabled |
|------+--------+----------+---------------------------------|
| RTS | Yellow | Off | Request to Send disabled |
|------+--------+----------+---------------------------------|
| TD | Yellow | On | Modem is transmitting steady |
| | | | SPACE |
|------+--------+----------+---------------------------------|
| TD | Yellow | Off | Modem is not transmitting data |
|------+--------+----------+---------------------------------|
| TD | Yellow | Blinking | Modem is transmitting data |
|------+--------+----------+---------------------------------|
| RD | Yellow | On | Modem is receiving steady SPACE |
|------+--------+----------+---------------------------------|
| RD | Yellow | Off | Modem is not receiving data |
|------+--------+----------+---------------------------------|
| RD | Yellow | Blinking | Modem is receiving data |
|------+--------+----------+---------------------------------|
| DCD | Yellow | On | Carrier signal detected |
|------+--------+----------+---------------------------------|
| DCD | Yellow | Off | Carrier signal not detected |
|------+--------+----------+---------------------------------|
| TEST | Red | On | Modem in test mode |
|------+--------+----------+---------------------------------|
| TEST | Red | Off | Modem not in test mode |
|------+--------+----------+---------------------------------|
| ERR | Yellow | On | Errors in test pattern |
|------+--------+----------+---------------------------------|
| ERR | Yellow | Off | Good test pattern |
+------------------------------------------------------------+