RAD DATA COMMUNICATIONS
FCD-2L (DC)
Card Type | E1 CSU/DSU |
Chip Set | Unidentified |
I/O Options | DC power connector, 25-pin connector (RS-530), E1 network interface via RJ-48 connector, BNC connectors (2) |
Wiring Type | RJ-48 120ohm shielded twisted pair BNC 75ohm coaxial |
E1 Transfer Rate | 2.048Mbps |
E1 Protocol | HDB3 |
Frame type | 256N, 256S |
Data Bus | External |
CONNECTIONS | |||
Function | Label | Function | Label |
Analog loopback activation push-button | ANA | ATE connector (maintenance only) | J1 |
Alarm clear push-button | CLR | Test pattern activation push-button | PATT |
DC power connector | CN1 | Remote digital loopback activation push-button | REM |
DTE/DCE serial port (25-pin connector) | CN2 | BNC connector - receive | RX |
Network interface via RJ-48 connector | CN3 | BNC connector - transmit | TX |
Digital loopback activation push-button | DIG | Power switch | SW2 |
USER CONFIGURABLE SETTINGS | |||
Setting | Label | Position | |
» | Front panel switches enabled | JP2 | Pins 1 & 2 closed |
Front panel switches disabled | JP2 | Pins 2 & 3 closed | |
» | Watchdog enabled | JP5 | Pins 1 & 2 closed |
Watchdog disabled | JP5 | Pins 2 & 3 closed | |
» | Debug self test mode disabled | JP7 | Pins 2 & 3 closed |
Debug self test mode enabled | JP7 | Pins 1 & 2 closed | |
» | Phantom power feeding is disabled | JP19 | Open |
Phantom power feeding is enabled | JP19 | Closed | |
» | Signal ground is connected to the frame ground | JP23 | Pins 2 & 3 closed |
Signal ground is not connected to the frame ground | JP23 | Pins 1 & 2 closed | |
» | E1 interface not referenced to frame ground | JP26 | Open |
E1 interface referenced to frame ground | JP26 | Closed | |
» | E1 interface receive signal not referenced to frame ground | JP27 | Open |
E1 interface receive signal referenced to frame ground | JP27 | Closed | |
» | E1 interface transmit signal not referenced to frame ground | JP32 | Open |
E1 interface transmit signal referenced to frame ground | JP32 | Closed | |
» | Unbalanced network interface not grounded | JP204 | Open |
Unbalanced network interface grounded | JP204 | Closed | |
» | CTS forced high | S7/3 | On |
CTS follows remote RTS | S7/3 | Off | |
» | Fast synchronization timing (1 sec) | S7/4 | Off |
AT&T TR-62411 synchronization timing (10 sec) | S7/4 | On | |
» | 256S multiframe mode enabled | S7/5 | Off |
256N multiframe mode enabled | S7/5 | On | |
» | TS16 is reserved | S7/6 | Off |
TS16 is enabled to carry user's data | S7/6 | On | |
» | CRC-4 enabled | S7/7 | Off |
CRC-4 disabled | S7/7 | On | |
» | Factory configured - do not alter | S7/8 | Unidentified |
» | Nx64 mode | S11/1 | Off |
Nx56 mode | S11/1 | On | |
» | Internal clock mode enabled | S11/2 | Off |
Loopback timing mode enabled | S11/2 | On | |
» | Time slot allocation is sequential, starting from slot 1 | S11/3 | On |
Data is inserted in alternate time slots, starting from slot 1 | S11/3 | Off | |
» | Factory configured - do not alter | S11/4 | Unidentified |
BAUD RATE | ||
Setting | S6 | S9 |
Unframed | 0 | 0 |
Operational baud rate set to 1x64 | 0 | 1 |
Operational baud rate set to 2x64 | 0 | 2 |
Operational baud rate set to 3x64 | 0 | 3 |
Operational baud rate set to 4x64 | 0 | 4 |
Operational baud rate set to 26x64 | 2 | 6 |
Operational baud rate set to 27x64 | 2 | 7 |
Operational baud rate set to 28x64 | 2 | 8 |
Operational baud rate set to 29x64 | 2 | 9 |
Operational baud rate set to 30x64 | 3 | 0 |
Note: Multiples of 56Kbps or 64Kbps, up to 30 may be selected, for a maximum of 1680Kbps for multiples of 56Kbps or a maximum of 1920Kbps for multiples of 64Kbps. 31-99 are not used. |
DTE INTERFACE | ||||
Function | J2 | J3 | J4 | J5 |
V.35 DTE interface | Open | Open | Board connected | Board connected |
RS-422 interface | Board connected | Board connected | Open | Open |
MAIN LINK INTERFACE | |||||||
Function | JP12 | JP13 | JP20/A | JP20/B | JP20/C | JP20/D | |
» | Balanced interface | 1 & 2 | 1 & 2 | Open | Open | Closed | Open |
Unbalanced interface | 1 & 2 | 1 & 2 | Closed | Open | Open | Open | |
Note: Pins designated are in the closed position |
IDLE CODE | |||||||||
Setting | S8/1 | S8/2 | S8/3 | S8/4 | S8/5 | S8/6 | S8/7 | S8/8 | |
» | Default idle code | Off | Off | Off | Off | Off | Off | Off | Off |
Note: On=0, Off=1. Switch S8/1 is the most significant bit. Switch S8/2 is the least significant bit. Values are currently unidentified. |
SERIAL COMMUNICATION | |||
Setting | JP16 | JP17 | |
» | Serial communication for maintenance purposes enabled | Pins 1 & 2 closed | Pins 1 & 2 closed |
Reserved | Pins 2 & 3 closed | Pins 2 & 3 closed |
PORT TIMING | |||
Setting | S7/1 | S7/2 | |
DTE1 port timing | On | On | |
» | DCE port timing | On | Off |
DTE2 port timing | Off | On | |
Not used | Off | Off |
E1 TRANSMIT LEVEL SELECTION | |||
Net build | Label | Position | |
» | 0dBm | S12 | 0 |
-7.5dBm | S12 | 1 | |
-15dBm | S12 | 2 | |
-22.5dBm | S12 | 3 |
DIAGNOSTIC LED(S) | |||
LED | Color | Status | Condition |
PWR | Unidentified | On | Power is on |
PWR | Unidentified | Off | Power is off |
RTS | Unidentified | On | RTS input line is on |
RTS | Unidentified | Off | RTS input line is off |
TST | Unidentified | On | Device is conducting a test |
TST | Unidentified | Off | Device is not conducting a test |
ERR | Unidentified | On | Error detected in the test pattern |
ERR | Unidentified | Off | Error not detected in the test pattern |
LOC | Unidentified | On | Synchronization lost on local FCD-2L |
LOC | Unidentified | Off | Synchronization not lost on local FCD-2L |
REM | Unidentified | On | Synchronization lost on remote FCD-2L |
REM | Unidentified | Off | Synchronization not lost on remote FCD-2L |
10 | Unidentified | On | BER on the network link exceeds 10 |
10 | Unidentified | Off | BER on the network link does not exceed 10 |
MIN | Unidentified | On | Minor alarm condition detected. Remains lit until fault condition disappears, or CLR button is pushed |
MIN | Unidentified | Off | Minor alarm condition not detected |
MAJ | Unidentified | On | Major alarm condition detected. Remains lit until fault condition disappears, or CLR button is pushed |
MAJ | Unidentified | Off | Major alarm condition not detected |