2400/AM
| Card Type | CSU/DSU |
| Chip Set | Unidentified |
| I/O Options | 25-pin serial port (RS-232), Power connector, Network interface via RJ-48 |
| Maximum Data Rate | 64Kbps |
| Data Bus | External |
CONNECTIONS |
|||
Function |
Label |
Function |
Label |
| DTE/DCE serial port (25-pin connector) | CN1 |
Power connector | CN3 |
| Network interface via RJ-48 connector | CN2 |
||
USER CONFIGURABLE SETTINGS |
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Setting |
Label |
Position |
|
| » | Transmitter and CTS will operate separate from receiver state | SW1/3 |
Off |
| CTS will go low if receiver is in no signal state or CD is low | SW1/3 |
On |
|
| » | RTS forced high | SW1/4 |
On |
| RTS follows DTE | SW1/4 |
Off |
|
| » | 56Kbps | SW1/5 |
Off |
| 64Kbps | SW1/5 |
On |
|
| » | Front panel switches enabled | SW1/6 |
Off |
| Front panel switches disabled | SW1/6 |
On |
|
| » | DTE loopback switches enabled | SW1/7 |
Off |
| DTE loopback switches disabled | SW1/7 |
On |
|
| » | Unit will respond to remote loopback requests | SW1/8 |
Off |
| Unit will not respond to remote loopback requests | SW1/8 |
On |
|
TRANSMIT CLOCK SOURCE |
|||
Source |
SW1/1 |
SW1/2 |
|
| » | Transmit clock derived from receive line signal for DDS operation | Off |
On |
Transmit clock derived from receive line signal. Remote device may initiate V.54 loopback. For use only in campus short-haul configuration |
On |
On |
|
Transmit clock derived from terminal interface |
On |
Off |
|
Transmit clock generated internally |
Off |
Off |
|
LOOPBACK TEST SELECTOR |
||
Function |
Label |
Position |
Remote digital loopback initiated |
SW3 |
1 |
Normal operation. Loopback not activated |
SW3 |
2 |
Activates local analog loopback |
SW3 |
3 |
TEST PATTERN GENERATOR |
||
Function |
Label |
Position |
511/E test pattern transmitted (intentional errors inserted) |
SW4 |
1 |
Normal operation. Test pattern not activated |
SW4 |
2 |
511 test pattern transmitted |
SW4 |
3 |
DC POWER |
||
Function |
JP1 |
|
| » | Normal power enabled | Pins 1 & 4, 3 & 6 closed |
Pin 9 is used for power interface |
Pins 4 & 5, 3 & 6 closed |
|
Pin 21 is used for power interface |
Pins 1 & 4, 5 & 6 closed |
|
DIAGNOSTIC LED(S) |
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LED |
Color |
Status |
Condition |
PWR |
Green |
On |
Power is on |
PWR |
Green |
Off |
Power is off |
TD |
Red |
On |
CSU/DSU detecting zero on transmit data |
TD |
Red |
Off |
CSU/DSU not detecting zero on transmit data. Idle condition or one data detected |
CD |
Red |
On |
Carrier signal high |
CD |
Red |
Off |
Carrier signal low |
BERT |
Red |
On |
Bit error likely in received signal or error detected in 511 or 511/E test pattern |
BERT |
Red |
Off |
Error not detected |
LOOP |
Red |
On |
Device has been placed in LAL or RDL test mode by local or remote user |
LOOP |
Red |
Off |
Device is not conducting a test |
RD |
Green |
On |
CSU/DSU detecting zero on receive data |
RD |
Green |
Off |
CSU/DSU not detecting zero on receive data. Idle condition or one data detected |
NS |
Green |
On |
No valid carrier signal detected |
NS |
Green |
Off |
Valid carrier signal detected |