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2140

MOTOROLA, INC.

2140

Card Type

Modem (synchronous/asynchronous)

Chip Set

Unidentified

Maximum Data Rate

2400bps

Data Bus

External

Data Modulation Protocol

Unidentified

CONNECTIONS

Function

Label

Function

Label

Line out

CN1

Talk/data switch

SW1

Line in

CN2

Power switch

SW2

RS-232/422

CN3

Volume

R1

AC power in

CN4

   

USER CONFIGURABLE SETTINGS

Setting

Label

Position

í Chassis ground connected to signal ground

JP1

Pins 2 & 3 closed

Chassis ground not connected to signal ground

JP1

Pins 1 & 2 closed

í Transmit level set to -9 (permissive)

JP3

Pins 2 & 3 closed

Transmit level set to programmable

JP3

Pins 1 & 2 closed

í Internal clock source

S2/1

Off

External clock source

S2/1

On

í 511 scrambler disabled

S2/2

Off

511 scrambler enabled

S2/2

On

í 200ms answer-back tone echo suppression enabled

S2/3

On

200ms answer-back tone echo suppression disabled

S2/3

Off

í RTS/CTS synchronization delay set to 150ms

S2/4

On

RTS/CTS synchronization delay set to 25ms

S2/4

Off

í CD signal level set to -30dBm

S2/5

Off

CD signal level set to -45dBm

S2/5

On

í Modem will disconnect immediately on low DTR

S2/6

Off

Modem will disconnect after 60 seconds of low DTR

S2/6

On

í Do not squelch receiver during carrier detection

S2/7

Off

Squelch receiver during carrier detection

S2/7

On

í Auto-answer enabled

S2/8

On

Auto-answer disabled

S2/8

Off

í Wait for dial tone before dialing; comma modifier pause time normal

S3/1

Off

Dial without waiting for dial tone; comma modifier pause time set to 2s

S3/1

On

í Modem will not disconnect when CD and RTS are idle

S3/2

Off

Modem will disconnect after 20 seconds of idle CD and RTS

S3/2

On

HANDSET POLARITY

Setting

JP2

í Normal

Pins 1 & 2, 3 & 4 closed

Reversed

Pins 1 & 3, 2 & 4 closed

COMMAND SET

Setting

S3/3

S3/4

í UDS proprietary

Off

Off

V.25bis Bisync mode

On

Off

V.25bis HDLC mode

Off

On

V.25bis SDLC mode

On

On

DISCONNECT DETECTION TIME

Setting

S4/1

S4/2

í Disabled

Off

Off

8ms disconnect

On

Off

90ms disconnect

Off

On

200ms disconnect

On

On

SPEAKER

Setting

S4/3

S4/4

í On until connection

On

Off

Always off

Off

Off

On 30 seconds after connection

Off

On

Always on

On

On

LINE EQUALIZATION

Setting

S4/5

S4/6

No equalization

Off

On

Normal equalization

Off

Off

í Normal equalization

On

On

Maximum equalization

On

Off

DISCONNECT DETECTION TIME

Setting

S4/7

S4/8

í DSR follows DTR with 120ms delay

On

Off

DSR normal

Off

Off

DSR forced high

Off

On

DSR follows RTS

On

On

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

MR/RI

Red

On

Power is on

MR/RI

Red

Off

Power is off

MR/RI

Red

Blinking

Phone is ringing

TR

Red

On

DTR signal is high

TR

Red

Off

DTR signal is low

RS

Red

On

RTS signal is high

RS

Red

Off

RTS signal is low

CS

Red

On

CTS signal is high

CS

Red

Off

CTS signal is low

CD

Red

On

Carrier signal has been detected

CD

Red

Off

Carrier signal has not been detected

RD

Red

On

Modem is receiving data

RD

Red

Off

Modem is not receiving data

TD

Red

On

Modem is transmitting data

TD

Red

Off

Modem is not transmitting data

Note: The function of PR/TM is unidentified.