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FCD-2L (DC)

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