WESTERMO TELEINDUSTRI AB
MD-21
Card Type |
Modem |
Chip Set |
Unidentified |
I/O Options |
9-pin serial port (RS-232), terminal blocks (3) |
Maximum Modem Rate |
19.2Kbps |
Data Modulation Protocol |
ITU-T V.24/V.28 |
Error Correction/Compression |
Unidentified |
Data Bus |
External |
CONNECTIONS | |||
Function |
Label |
Function |
Label |
DCE serial port (terminal block) |
CN1 |
Network interface (terminal block) |
CN3 |
Power connector (terminal block) |
CN2 |
9-pin serial port |
CN4 |
INVERTED TRANSMITTER/RECEIVER SELECTION | |||
Setting |
S1/1 |
S1/2 | |
» |
Transmitter and receiver normal |
Off |
Off |
Transmitter inverted, receiver normal |
On |
Off | |
Transmitter normal, receiver inverted |
Off |
On | |
Transmitter and receiver inverted |
On |
On |
RECEIVER ACTIVE/PASSIVE SELECTION | |||||||
Setting |
S3/1 |
S3/2 |
S3/3 |
S3/4 |
S3/5 |
S3/6 | |
» |
Passive |
On |
On |
Off |
Off |
Off |
Off |
Active |
Off |
Off |
On |
On |
On |
On |
TRANSMITTER ACTIVE/PASSIVE SELECTION | |||||||
Setting |
S4/1 |
S4/2 |
S4/3 |
S4/4 |
S4/5 |
S4/6 | |
» |
Passive |
On |
On |
Off |
Off |
Off |
Off |
Active |
Off |
Off |
On |
On |
On |
On |
DIAGNOSTIC LED(S) | |||
LED |
Color |
Status |
Condition |
PWR |
Unidentified |
On |
Power is on |
PWR |
Unidentified |
Off |
Power is off |
RD |
Unidentified |
On |
Modem is receiving data |
RD |
Unidentified |
Off |
Modem is not receiving data |
TD |
Unidentified |
On |
Modem is transmitting data |
TD |
Unidentified |
Off |
Modem is not transmitting data |