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FCD-1L

RAD DATA COMMUNICATIONS

FCD-1L

Card Type

T1 CSU/DSU

Chip Set

Unidentified

I/O Options

AC power connector, 25-pin connector (RS-530),

T1 network interface via RJ-48 connector

Wiring Type

RJ-48 120ohm shielded twisted pair

T1 Transfer Rate

1536Kbps (supports multiples of 56Kbps or 64Kbps)

T1 Protocol

AMI, B8ZS, B7ZS

Frame Type

ESF, D4SF

Data Bus

External

CONNECTIONS

Function

Label

Function

Label

Analog loopback activation push-button

ANA

Digital loopback activation push-button

DIG

Alarm clear push-button

CLR

Maintenance connector

J1

AC power connector

CN1

Test pattern activation push-button

PATT

DTE/DCE serial port (25-pin connector)

CN2

Remote digital loopback activation push-button

REM

Network interface via RJ-48 connector

CN3

Power switch

SW2

Note: FCD-1L also available with DC power connector

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

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

Multiframe ESF mode enabled

S7/5

Off

 

Multiframe D4 (SF) mode enabled

S7/5

On

Factory configured - do not alter

S7/8

Unidentified

Nx64 mode

S11/1

Off

 

Nx56 mode

S11/1

On

Loopback timing mode enabled

S11/2

On

 

Internal clock mode enabled

S11/2

Off

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 20x64

2

0

Operational baud rate set to 21x64

2

1

Operational baud rate set to 22x64

2

2

Operational baud rate set to 23x64

2

3

Operational baud rate set to 24x64

2

4

Note:

Multiples of 56Kbps or 64Kbps, up to 24 may be selected, for a maximum of 1344Kbps for multiples of 56Kbps or a maximum of 1536Kbps for multiples of 64Kbps. 25-99 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

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.

LOOP ACTIVATION

Setting

JP16

JP17

Loop activation enabled

Pins 2 & 3 closed

Pins 2 & 3 closed

 

Loop activation disabled

Pins 1 & 2 closed

Pins 1 & 2 closed

PORT TIMING

Setting

S7/1

S7/2

 

DTE1 port timing

On

On

DCE port timing

On

Off

 

DTE2 port timing

Off

On

SOUND CONFIGURATION

Net build

S12

0dBm

0

 

-7.5dBm

1

 

-15dBm

2

 

-22.5dBm

3

ZERO SUPPRESSION MODE

Setting

S7/6

S7/7

 

Transparent suppression

On

On

 

B7ZS

On

Off

B78S

Off

On

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

RED

Unidentified

On

Red alarm condition detected by local FCD-1L

RED

Unidentified

Off

Red alarm condition not detected by local FCD-1L

YEL

Unidentified

On

Yellow alarm condition detected by remote FCD-1L

YEL

Unidentified

Off

Yellow alarm condition not detected by remote FCD-1L

SES

Unidentified

On

Severe error second detected

SES

Unidentified

Off

Severe error second not detected

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