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FCD-E1/1

RAD DATA COMMUNICATIONS

FCD-E1/1

Card Type

E1 CSU/DSU

Chip Set

Unidentified

I/O Options

AC power connector, 25-pin port (RS-530), BNC connectors (2),

9-pin serial ports (2 RS-232), E1 network interface via RJ-45 connector

E1 Transfer Rate

2.048Kbps

E1 Protocol

HDB3

Frame type

CRC-4

Data Bus

External

CONNECTIONS

Function

Label

Function

Label

AC power connector

CN1

Header connector to CH2 interface board

CN8

DTE serial port

CN2

Header connector to CH2 interface board

CN9

25-pin connector - channel 1

CN3

DCE serial port

CN10

Network port via RJ-48 connector

CN4

Power switch

SW2

Header connector to sub interface board

CN5

BNC connector - receive

RX

Header connector to CH2 interface board

CN6

BNC connector - transmit

TX

Header connector to CH2 interface board

CN7

   

USER CONFIGURABLE SETTINGS

Setting

Label

Position

Signal ground is connected to the frame ground

JP8

Closed

 

Signal ground is not connected to the frame ground

JP8

Open

Transmit side ground reference set for balanced interface

JP9

Open

 

Transmit side ground reference set for unbalanced interface

JP9

Closed

Receive side ground reference set for balanced interface

JP10

Open

 

Receive side ground reference set for unbalanced interface

JP10

Closed

Front panel push-buttons enabled

JP77

Open

 

Front panel push-buttons disabled

JP77

Closed

Supervisor ports operate according to user-defined parameters

S1/1

Off

 

CSU/DSU uses default parameters stored in its EPROM

S1/1

On

Default password enabled. Password=RAD

S1/2

On

 

User password enabled

S1/2

Off

Loads user-selected parameters from NVRAM on power-up

S1/3

Off

 

Loads default parameters stored in its EPROM on power-up

S1/3

On

Factory configured - do not alter

S1/4

Off

MAIN LINK INTERFACE

Function

JP7

JP12/A

JP12/B

JP12/C

JP12/D

JP33

JP35

Balanced interface

Open

Open

Closed

Open

Open

2 & 3

2 & 3

 

Unbalanced interface

Closed

Open

Open

Open

Closed

1 & 2

1 & 2

Note: Pins designated are in the closed position

ALARM RELAY

Function

JP51

JP52

Alarm relay disconnected. DTE port (CN2) provides full functionality

2 & 3

2 & 3

 

Alarm relay connected instead of DCD and CTS lines

1 & 2

1 & 2

Note: Pins designated are in the closed position

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

LOC1

Unidentified

On

Local synchronization lost on main link

LOC1

Unidentified

Off

Local synchronization OK on main link

REM1

Unidentified

On

Remote synchronization lost on main link

REM1

Unidentified

Off

Remote synchronization OK on main link

LOC2

Unidentified

On

Local synchronization lost on sub link

LOC2

Unidentified

Off

Local synchronization OK on sub link

REM2

Unidentified

On

Remote synchronization lost on sub link

REM2

Unidentified

Off

Remote synchronization OK on sub link

ALM

Unidentified

On

Alarm condition detected on network

ALM

Unidentified

Off

Alarm condition not detected on network

TST

Unidentified

On

Device loopback test active

TST

Unidentified

Off

Device loopback test not running

VER. X.21

CONNECTIONS

Function

Label

15-pin connector - channel 1

CN11

VER. V.35

CONNECTIONS

Function

Label

34-pin connector - channel 1

CN12

MISCELLANEOUS TECHNICAL NOTE

CN11 and CN12 are modules which can be used to replace CN3, allowing for various DTE/DCE interfaces.