ASM-40 V.35 AND X.21
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 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
V.35/X.21/G.703 | CN1 | Digital loopback switch | DIG |
AC power | CN2 | Analog loopback switch | ANA |
Ground | GND | Remote loopback switch | REM |
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 |
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