...because we can't all be on the bleeding edge...





2703-X.21

PATTON ELECTRONICS COMPANY

2703-X.21

Card Type

E1 Modem

Chip Set

Unidentified

I/O Options

AC power connector, 15-pin DTE connector,

BNC network connectors (2), RJ-45 network connector

Maximum Data Rate

2.048Mbps

Data Bus

External

CONNECTIONS

Function

Label

Function

Label

Power connector

CN1

RJ-45 120Ohm twisted pair connector

CN4

X.21 DTE port (15pin connector)

CN2

BNC 75Ohm coaxial connector

CN5

BNC 75Ohm coaxial connector

CN3

Power switch

SW3

USER CONFIGURABLE SETTINGS

Setting

Label

Position

í 75Ohm transmit shield to ground

LK1

Closed

120Ohm transmit shield to ground

LK1

Open

í 75Ohm receive shield to ground connection broken

LK2

Open

75Ohm receive shield to ground made

LK2

Closed (optional)

í Factory configured - do not alter

LK3

Open

í 1200Ohm shield to ground broken

LK4

Open

120Ohm shield to ground made

LK4

Closed (optional)

í Auto-sense enabled

LK5

Closed

Auto-sense disabled

LK5

Open

í Device is master (clock generated internally)

S1/1

On

Device is slave. (clock recovered from network)

S1/1

Off

í Loopback activated by front panel

S1/4

Off

Continual loopback mode enabled

S1/4

On

í Data inversion disabled

S1/5

Off

Data inversion enabled

S1/5

On

í Factory configured - do not alter

S1/6

Off

í Factory configured - do not alter

S1/7

Off

í Factory configured - do not alter

S1/8

Off

Loopback test activated

SW2

On

Normal mode. Loopback test not activated

SW2

Off

LINE IMPEDANCE

Setting

LK6

LK7

75Ohm operation

Closed

Closed

120Ohm operation

Open

Open

RATE ADAPTATION

Setting

S1/2

S1/3

256Kbps

On

On

512Kbps

Off

On

1.024Mbps

On

Off

í 2.048Mbps

Off

Off

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

PWR

Red

On

Power is on

PWR

Red

Off

Power is off

NET

Green

On

Network connection is good

NET

Green

Off

Network connection is broken

MCL

Green

On

Device is configured as a master clock unit

MCL

Green

Off

Device is configured as a slave unit

LOOP

Green

On

Device is conducting a loopback test

LOOP

Green

Off

Device is not conducting a loopback test