3COM CORPORATION
MICRO LINK 300
|
Card Type |
Modem (asynchronous) |
|
Chip Set |
U.S. Robotics |
|
Maximum Data Rate |
300bps |
|
Data Bus |
External |
|
Data Modulation Protocol |
Bell 103/113 |
54163
|
CONNECTIONS | ||||||
|
Function |
Label |
Function |
Label | |||
|
Line out/in - unidentified |
CN1 |
DC power |
CN4 | |||
|
Line in/out - unidentified |
CN2 |
Power switch |
SW1 | |||
|
RS-232/422 |
CN3 |
Analog loopback switch |
SW2 | |||
|
RS232C | ||||
|
Setting |
SW3/A |
SW3/B |
SW3/C |
SW3/D |
|
Pin 2 receive/Pin 3 send |
On |
On |
Off |
Off |
|
Pin 2 send/Pin 3 receive |
Off |
Off |
On |
On |
|
DIAGNOSTIC LED(S) | |||
|
LED |
Color |
Status |
Condition |
|
CD |
Red |
On |
Carrier signal detected |
|
CD |
Red |
Off |
Carrier signal not detected |
|
ON |
Red |
On |
Power is on |
|
ON |
Red |
Off |
Power is off |
|
AL |
Red |
On |
Modem is in analog loopback test mode |
|
AL |
Red |
Off |
Modem is not in analog loopback test mode |
|
SD |
Red |
On |
Modem is transmitting data |
|
SD |
Red |
Off |
Modem is not transmitting data |
|
RD |
Red |
On |
Modem is receiving data |
|
RD |
Red |
Off |
Modem is not receiving data |
|
MISCELLANEOUS TECHNICAL NOTES |
|
Note: Diagram not available. |