B&B ELECTRONICS
1140 (v.54 MODEM) SMA
| Card Type | Transceiver |
| NIC Type | Unidentified |
| Boot ROM | Not available |
| Network Transfer Rate | 57.6Kbps |
| Topology | Peer-Peer |
| Wiring Type | Fiber optic cable |
| Data Bus | External |
CONNECTIONS |
|||
Function |
Label |
Function |
Label |
| Fiber Optic Connector (SMA) | CN1 |
RS-232 (DCE or DTE) | CN2 |
USER CONFIGURABLE SETTINGS |
|||
Function |
Label |
Position |
|
| » | Asynchronous mode | SW1/7 |
On |
| Synchronous mode | SW1/7 |
Off |
|
| » | Carrier control constantly on | SW1/8 |
Off |
| Carrier control controlled by RTS | SW1/8 |
On |
|
| » | Extended Signaling Rate set to -2.5% to +1% Basic | SW2/3 |
Off |
| Extended Signaling Rate set to -2.5% to +2.3% Extended | SW2/3 |
On |
|
| » | Factory configured - do not alter | SW2/6 |
Unidentified |
| » | Factory configured - do not alter | SW2/7 |
Unidentified |
| » | V.54 Loopback test enable | SW2/8 |
Off |
| V.54 Loopback test disable | SW2/8 |
On |
|
| Local analog Loopback (LAL) test | SW3 |
Up |
|
| Remote digital Loopback (RDL) test | SW3 |
Down |
|
| V.54 bit error rate (BER) test, transmit "511" test pattern | SW4 |
Up |
|
| V.54 bit error rate (BER) test, transmit "511/E" test pattern (with errors) | SW4 |
Down |
|
NETWORK SPEED SELECTION |
|||||
Speed |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
|
1.2Kbps |
On |
On |
On |
On |
|
1.8Kbps |
Off |
On |
On |
On |
|
2.4Kbps |
On |
Off |
On |
On |
|
3.6Kbps |
Off |
Off |
On |
On |
|
4.8Kbps |
On |
On |
Off |
On |
|
7.2Kbps |
Off |
On |
Off |
On |
|
| » | 9.6Kbps |
On |
Off |
Off |
On |
14.4Kbps |
Off |
Off |
Off |
On |
|
19.2Kbps |
On |
On |
On |
Off |
|
28.8Kbps |
Off |
On |
On |
Off |
|
38.4Kbps |
On |
On |
Off |
Off |
|
57.6Kbps |
Off |
On |
Off |
Off |
|
CLOCK SOURCE |
|||
Setting |
SW1/5 |
SW1/6 |
|
| » | Internal transmit clock |
On |
On |
Receive recover clock |
Off |
On |
|
External transmit clock |
On |
Off |
|
WORD LENGTH |
|||
Setting |
SW2/1 |
SW2/2 |
|
8 bits |
Off |
On |
|
9 bits |
On |
On |
|
| » | 10 bits |
Off |
Off |
11 bits |
On |
Off |
|
RTS/CTS DELAY |
|||
Setting |
SW2/4 |
SW2/5 |
|
| » | 7 ms |
On |
On |
53 ms |
Off |
On |
|
No delay |
On |
Off |
|
No delay |
Off |
Off |
|
DIAGNOSTIC LED(S) |
|||
LED |
Color |
Status |
Condition |
LED1 |
Red |
Blinking |
Errors are present during "511" test |
LED1 |
Red |
Off |
No errors are present during "511" test |
LED1 |
Red |
On |
"511/E" test is successful |
LED2 |
Unidentified |
On |
LAL test activated |
LED2 |
Unidentified |
Off |
LAL test not activated |
MISCELLANEOUS TECHNICAL NOTES |
NOTE: Model 1140 is available with
either male or female DB-25 connector. Model 1140 is availablewith either SMA or ST fiber
optic connectors. |