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AUTO LINK 1200

U.S. ROBOTICS, INC.

AUTO LINK 1200

Card Type

Modem (asynchronous)

Chip Set

U.S. Robotics

Maximum Data Rate

1200bps

Data Bus

External

Data Modulation Protocol

Bell 212A

V2254

CONNECTIONS

Function

Label

Function

Label

Line out

CN1

Analog loopback switch

SW1

Line in

CN2

Originate mode switch

SW2

RS-232/422

CN3

Power switch

SW3

DC power

CN4

   

USER CONFIGURABLE SETTINGS

Setting

Label

Position

Auto answer disabled

SW4/A

Off

Auto answer enabled

SW4/A

On

Local echo disabled

SW4/B

Off

Local echo enabled

SW4/B

On

Equalize for dial-up phone lines

SW4/C

Off

Equalize for dedicated phone lines

SW4/C

On

DTR normal

SW4/D

Off

DTR forced high

SW4/D

On

RS232C

Setting

SW5/A

SW5/B

SW5/C

SW5/D

Pin 2 receive/Pin 3 send

On

On

Off

Off

Pin 2 send/Pin 3 receive

Off

Off

On

On

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

OH

Red

On

Modem is off-hook

OH

Red

Off

Modem is on-hook

CD

Red

On

Carrier signal detected

CD

Red

Off

Carrier signal not detected

ON

Red

On

Power is on

ON

Red

Off

Power is off

AL

Red

On

Modem is in analog loopback test mode

AL

Red

Off

Modem is not in analog loopback test mode

TR

Red

On

DTR signal is high

TR

Red

Off

DTR signal is low

SD

Red

On

Modem is transmitting data

SD

Red

Off

Modem is not transmitting data

RD

Red

On

Modem is receiving data

RD

Red

Off

Modem is not receiving data

AN

Red

On

Auto-answer enabled

AN

Red

Off

Auto-answer disabled

RI

Red

On

Modem is receiving ring signal

RI

Red

Off

Modem is not receiving ring signal

MISCELLANEOUS TECHNICAL NOTES

Note: Diagram not available.