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 |