RAD DATA COMMUNICATIONS
ASM-24 (REV. 1)
Modem Type | Data (synchronous) |
Maximum Data Rate | 144Kbps |
Data Bus | External |
Data Modulation Protocol | Proprietary |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
V.24/V.35/X.21 | CN1 | Diagnostic test 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 | JP5 |
» Enabled | Pins 1 & 2 closed |
Disabled | Pins 2 & 3 closed |
BAUD RATE | |
Setting | SW12 |
144Kbps | 0 |
128Kbps | 1 |
112Kbps | 2 |
96Kbps | 3 |
72Kbps | 4 |
» 64Kbps | 5 |
56Kbps | 6 |
48Kbps | 7 |
CD SENSITIVITY | |
Setting | JP10 |
» High | Pins 1 & 2 closed |
Low | Pins 2 & 3 closed |
CD SIGNAL | |
Setting | JP6 |
» CD forced high | Pins 1 & 2 closed |
CD normal | Pins 2 & 3 closed |
CHASSIS TO SIGNAL GROUND | |
Setting | JP3 |
» Connected | Pins 2 & 3 closed |
Disconnected | Pins 1 & 2 closed |
CLOCK SOURCE | |||
Setting | JP11/A | JP11/B | JP11/C |
Receive | Closed | Open | Open |
» Internal | Open | Closed | Open |
External | Open | Open | Closed |
ENABLE PUSHBUTTONS | |
Setting | JP8 |
» On | Pins 1 & 2 closed |
Off | Pins 2 & 3 closed |
RECEIVE IMPEDANCE | |
Setting | JP2 |
» 150omhs | Pins 1 & 2 closed |
High | Pins 2 & 3 closed |
RECEIVE LEVEL | |
Setting | JP14 |
» 0dBm | Pins 1 & 2 closed |
-6dBm | Pins 2 & 3 closed |
REMOTE LOOPBACK | |
Setting | JP4 |
» Enabled | Pins 1 & 2 closed |
Disabled | Pins 2 & 3 closed |
RTS/CTS DELAY | |
Setting | JP7 |
» 8ms | Pins 2 & 3 closed |
70ms | Pins 1 & 2 closed |
TRANSMIT IMPEDANCE | |
Setting | JP1 |
» 150omhs | Pins 1 & 2 closed |
Low | Pins 2 & 3 closed |
TRANSMIT LEVEL | |
Setting | JP13 |
» 0dBm | Pins 1 & 2 closed |
-6dBm | Pins 2 & 3 closed |
V.54 DELAY | |
Setting | JP9 |
» On | Pins 1 & 2 closed |
Off | Pins 2 & 3 closed |
DIAGNOSTIC LED(S) | |||
LED | Color | Status | Condition |
PWR | Green | On | Power is on |
PWR | Green | Off | Power is off |
RTS | Green | On | Request to Send enabled |
RTS | Green | 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 |