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MA-21DC

WESTERMO TELEINDUSTRI AB

MA-21DC

Card Type

Modem (asynchronous)

Chip Set

Unidentified

I/O Options

DC power, RS-232-C, 20 mA current loop via 5-pin terminal block

Maximum Modem Rate

19.2Kbps

Data Modulation Protocol

C/CCITT V.24/V.28

Error Correction/Compression

Unidentified

Data Bus

External

CONNECTIONS

Function

Label

Function

Label

Power connector (terminal block)

CN1

RS-232-C port

CN3

Terminal block

CN2

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

? 115V AC enabled

S5

On

230V AC enabled

S5

Off

TRANSMITTED SIGNAL SELECTION

Setting

S1/1

S1/2

S1/3

S1/4

?? TD pin 2

On

Off

Off

Off

AUX pin 11

Off

On

Off

Off

SRS pin 19

Off

Off

On

Off

DTR pin 20

Off

Off

Off

On

CTS CONRTOL SELECTION

Setting

S1/5

S1/6

S1/7

S1/8

S1/9

? RTS

On

Off

On

On

Off

RD

Off

On

Off

On

Off

Always High

On

Off

Off

On

On

TRANSMITTER/RECEIVER SELECTION

Transmitter Setting

Receiver Setting

S2/1

S2/2

S2/3

S2/4

? Normal

Normal

On

Off

On

Off

Inverted

Normal

Off

On

On

Off

Normal

Inverted

On

Off

Off

On

Inverted

Inverted

Off

On

Off

On

RECEIVER ACTIVE/PASSIVE SELECTION

Setting

S3/1

S3/2

S3/3

S3/4

S3/5

S3/6

? Passive

On

On

Off

Off

Off

Off

Active

Off

Off

On

On

On

On

TRANSMITTER ACTIVE/PASSIVE SELECTION

Setting

S4/1

S4/2

S4/3

S4/4

S4/5

S4/6

? Passive

On

On

Off

Off

Off

Off

Active

Off

Off

On

On

On

On

*DIAGNOSTIC LED(S)

LED

Color

Status

Condition

LED1

Unidentified

On

Power is on

LED1

Unidentified

Off

Power is off

LED2

Unidentified

On

Data is being transmitted

LED2

Unidentified

Off

Data is not being transmitted

LED3

Unidentified

On

Data is being received

LED3

Unidentified

Off

Data is not being received