RAD DATA COMMUNICATIONS
FCD-2 (X.21)
|
Card Type |
E1 LTU |
|
Chip Set |
Unidentified |
|
I/O Options |
AC power connector, X.21 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 |
|
15-pin X.21 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 X.21 DTE port is high |
|
RTS |
Unidentified |
Off |
Control input line in X.21 DTE port is low |
|
DCD |
Unidentified |
On |
Indication output line in X.21 DTE port is high |
|
DCD |
Unidentified |
Off |
Indication output line in X.21 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 - transmit side ground reference |
JP5 |
Open |
| » |
Factory configured - do not alter - receive side ground reference |
JP6 |
Open |
|
E1 OUTPUT LEVEL SELECTIO | |||
|
Net build |
Label |
Position | |
| » |
0dB |
SW1 |
1 |
|
-7.5dB |
SW1 |
2 | |
|
-15dB |
SW1 |
3 | |
