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# RAD DATA COMMUNICATIONS
ASM-40 V.35 AND X.21
Modem Type Data (Synchronous)
Maximum Data Rate 2.048Mbps
Data Bus External
Data Modulation Protocol Proprietary
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------+----------+--------------------+----------|
| V.35/X.21/G.703 | CN1 | Digital loopback | DIG |
| | | switch | |
|-----------------+----------+--------------------+----------|
| AC power | CN2 | Analog loopback | ANA |
| | | switch | |
|-----------------+----------+--------------------+----------|
| Ground | GND | Remote loopback | REM |
| | | switch | |
|-----------------+----------+--------------------+----------|
| Receive | RCV | Test pattern | PATT |
|-----------------+----------+--------------------+----------|
| Transmit | XMT | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ANALOG LOOPBACK |
|------------------------------------------------------------|
| Setting | JP4 |
|----------------------------+-------------------------------|
| Enabled | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| » Disabled | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BAUD RATE |
|------------------------------------------------------------|
| Setting | SW1 |
|-------------------------------+----------------------------|
| 2.048Mbps | 0 |
|-------------------------------+----------------------------|
| 1.544Mbps | 1 |
|-------------------------------+----------------------------|
| 1.535Mbps | 2 |
|-------------------------------+----------------------------|
| 1.024Mbps | 3 |
|-------------------------------+----------------------------|
| 756Kbps | 4 |
|-------------------------------+----------------------------|
| 512Kbps | 5 |
|-------------------------------+----------------------------|
| 384Kbps | 6 |
|-------------------------------+----------------------------|
| » 256Kbps | 7 |
|-------------------------------+----------------------------|
| 128Kbps | 8 |
|-------------------------------+----------------------------|
| 64Kbps | 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CHASSIS TO SIGNAL GROUND |
|------------------------------------------------------------|
| Setting | JP12 |
|----------------------------+-------------------------------|
| » Connected | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| Disconnected | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CLOCK SOURCE |
|------------------------------------------------------------|
| Setting | JP2/A | JP2/B | JP2/C |
|---------------+--------------+--------------+--------------|
| » Internal | Closed | Open | Open |
|---------------+--------------+--------------+--------------|
| External | Open | Closed | Open |
|---------------+--------------+--------------+--------------|
| Loopback | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ENABLE PUSHBUTTONS |
|------------------------------------------------------------|
| Setting | JP8 |
|-------------------------------+----------------------------|
| » DIG, ANA, REM, PATT enabled | Pins 1 & 2 closed |
|-------------------------------+----------------------------|
| Disabled | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ERROR CORRECTION |
|------------------------------------------------------------|
| Setting | JP7/A | JP7/B | JP7/C |
|---------------+--------------+--------------+--------------|
| » Bypass | Closed | Open | Open |
|---------------+--------------+--------------+--------------|
| Random | Open | Closed | Open |
|---------------+--------------+--------------+--------------|
| Burst | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LINE CODE |
|------------------------------------------------------------|
| Setting | JP3/A | JP3/B | JP3/C |
|---------------+--------------+--------------+--------------|
| AMI | Closed | Open | Open |
|---------------+--------------+--------------+--------------|
| » HDB3 | Open | Closed | Open |
|---------------+--------------+--------------+--------------|
| B8ZS | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LINE FREQUENCY |
|------------------------------------------------------------|
| Setting | SW9 |
|--------------------------------------+---------------------|
| » 2048, 2024/1024, 512, 256, 128, 64 | 1 |
|--------------------------------------+---------------------|
| 1544/1920 | 2 |
|--------------------------------------+---------------------|
| 1536, 768, 384 | 3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LINE SIDE (coax cable) |
|------------------------------------------------------------|
| Setting | JP11/A | JP11/B | JP11/C | JP11/D |
|---------------+-----------+----------+----------+----------|
| Balanced | Open | Closed | Closed | Open |
|---------------+-----------+----------+----------+----------|
| » Unbalanced | Closed | Open | Open | Closed |
|------------------------------------------------------------|
| Note: Non-coax cable, no jumper connections selected. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REMOTE LOOPBACK |
|------------------------------------------------------------|
| Setting | JP5 |
|----------------------------+-------------------------------|
| Enabled | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| » Disabled | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| T1/E1 IMPEDANCE |
|------------------------------------------------------------|
| Setting | SW10 |
|-------------------------------+----------------------------|
| » 2048/1920 | 1 |
|-------------------------------+----------------------------|
| 1544, 1536 | 2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.54 DELAY |
|------------------------------------------------------------|
| Setting | JP6 |
|----------------------------+-------------------------------|
| On | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| » Off | Pins 1 & 2 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 |
+------------------------------------------------------------+