RAD DATA COMMUNICATIONS
FCD-2 (V.35)
Card Type | E1 LTU |
Chip Set | Unidentified |
I/O Options | AC power connector, V.35 DTE port, serial port, E1 network interface via 15-pin connector, BNC connectors (2) |
E1 Transfer Rate | 2.048Mbps |
E1 Protocol | HDB3 |
Frame Type | CRC-4 |
Data Bus | External |
CONNECTIONS | |||
Function | Label | Function | Label |
AC power connector | CN1 | LTU board connector | J3 |
Serial port | CN2 | LTU board connector | J4 |
34-pin V.35 DTE port | CN3 | Power switch | SW2 |
15-pin E1 port | CN4 | BNC connector - receive | RX |
LTU board connector | J2 | BNC connector - transmit | TX |
Note: Jumpers must be installed on pins 1&2 and 3&4 of connectors J3 & J4 to maintain signal path continuity when the LTU board is removed. |
USER CONFIGURABLE SETTINGS | |||
Setting | Label | Position | |
» | Debug self test mode disabled | JP2 | Pins 1 & 2 closed |
Debug self test mode enabled | JP2 | Pins 2 & 3 closed | |
» | Default password enabled. Password=FCD-12 | JP3 | Pins 2 & 3 closed |
User password enabled | JP3 | Pins 1 & 2 closed | |
» | Watchdog timer enabled | JP4 | Pins 1 & 2 closed |
Watchdog timer disabled | JP4 | Pins 2 & 3 closed | |
» | Signal ground is connected to the frame ground | JP12 | Pins 2 & 3 closed |
Signal ground is not connected to the frame ground | JP12 | Pins 1 & 2 closed | |
» | Internal -5V enabled | JP22 | Pins 1 & 2 closed |
Grounded to pin 15 in the main link connector (CN4) | JP22 | Pins 2 & 3 closed | |
» | Transmit side ground reference set for balanced interface | JP23 | Open |
Transmit side ground reference set for unbalanced interface | JP23 | Closed | |
» | Frame ground is connected to main link ground reference | JP24 | Closed |
Frame ground is not connected to main link ground reference | JP24 | Open | |
» | Allows connection of the line controlled by JP22 to pin 15 of main link connector (CN4) for powering external device | JP25 | Closed |
Does not allow connection of the line controlled by JP22 to pin 15 of main link connector (CN4) for powering external device | JP25 | Open | |
» | Allows connection of internal +5V, via resistor, to pin 14 of main link connector (CN4) for powering external device | JP26 | Closed |
Does not allow connection of internal +5V, via resistor, to pin 14 of main link connector (CN4) for powering external device | JP26 | Open | |
» | Receive side ground reference set for balanced interface | JP27 | Open |
Receive side ground reference set for unbalanced interface | JP27 | Closed |
TERMINATION | |||||
Function | JP18 | JP19 | JP20 | JP21 | |
» | Balanced interface compatibility enabled | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
Unbalanced interface compatibility enabled | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | |
Note: Pins designated are in the closed position |
DIAGNOSTIC LED(S) | |||
LED | Color | Status | Condition |
RTS | Unidentified | On | Control input line in V.35 DTE port is high |
RTS | Unidentified | Off | Control input line in V.35 DTE port is low |
DCD | Unidentified | On | Indication output line in V.35 DTE port is high |
DCD | Unidentified | Off | Indication output line in V.35 DTE port is low |
TD | Unidentified | On | Device is detecting pulses from the local DTE |
TD | Unidentified | Off | Device is not detecting pulses from the local DTE |
RD | Unidentified | On | Device is receiving pulses from network |
RD | Unidentified | Off | Device is not receiving pulses from network |
LOC | Unidentified | On | Local synchronization lost |
LOC | Unidentified | Off | Local synchronization OK |
REM | Unidentified | On | Remote synchronization lost |
REM | Unidentified | Off | Remote synchronization OK |
TST | Unidentified | On | Device loopback test active |
TST | Unidentified | Off | device loopback test not running |
LTU BOARD
CONNECTIONS | |||
Function | Label | Function | Label |
Mainboard connector | J5 | Mainboard connector | J7 |
Mainboard connector | J6 |
USER CONFIGURABLE SETTINGS | |||
Setting | Label | Position | |
» | Factory configured - do not alter | JP5 | Open |
» | Factory configured - do not alter | JP6 | Open |
E1 OUTPUT LEVEL SELECTIO | |||
Net build | Label | Position | |
» | 0dB | SW1 | 1 |
-7.5dB | SW1 | 2 | |
-15dB | SW1 | 3 |