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ASM-11

RAD DATA COMMUNICATIONS

ASM-11

Modem Type

Data (synchronous/asynchronous)

Maximum Data Rate

19.2Kbps

Data Bus

External

Data Modulation Protocol

Proprietary

CONNECTIONS

Purpose

Location

Purpose

Location

Line in

CN1

Fuse

FUSE

RS-232/422

CN2

ANA/NOR/REM switch

SW1

AC power

CN3

   

AGC

Setting

JP10

Forced high

Pins 2 & 3 closed

Normal

Pins 1 & 2 closed

ANALOG LOOPBACK

Setting

JP6

Enabled

Pins 1 & 2 closed

Disabled

Pins 2 & 3 closed

ASYNCHRONOUS LENGTH - bits

Setting

SW3/S3

SW3/S4

8bits

Off

Off

9bits

Off

On

10bits

On

Off

11bits

On

On

ASYNCHRONOUS LENGTH - Characters

Setting

SW3/S2

12.5%

Off

25%

On

BAUD RATE

Setting

SW2

19.2Kbps

0

14.4Kbps

1

9600bps

2

7200bps

3

4800bps

4

3600bps

5

2400bps

6

1200bps

7

CD SIGNAL

Setting

JP2

CD normal

Pins 1 & 2 closed

CD forced high

Pins 2 & 3 closed

CHASSIS TO SIGNAL GROUND

Setting

JP9

Connected

Pins 1 & 2 closed

Disconnected

Pins 2 & 3 closed

ENABLE TOGGLE SWITCH

Setting

JP8

ANA, REM enabled

Pins 2 & 3 closed

Disabled

Pins 1 & 2 closed

RECEIVE IMPEDANCE

Setting

JP5

150 Omhs

Pins 2 & 3 closed

High

Pins 1 & 2 closed

REMOTE LOOPBACK

Setting

JP7

Enabled

Pins 1 & 2 closed

Disabled

Pins 2 & 3 closed

RTS/CTS DELAY

Setting

JP1/A

JP1/B

JP1/C

0ms

Closed

Open

Open

8ms

Open

Closed

Open

64ms

Open

Open

Closed

TRANSMIT IMPEDANCE

Setting

JP4

150omhs

Pins 2 & 3 closed

Low

Pins 1 & 2 closed

TRANSMIT LEVEL

Setting

JP3

0dBm

Pins 1 & 2 closed

-6dBm

Pins 2 & 3 closed

USER CONFIGERABLE SETTINGS

Function

Jumper/Switch

Position

Factory configured - Do not alter

SW3/S1

Not used

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

PWR

Green

On

Power is on

PWR

Green

Off

Power is off

RTS

Yellow

On

Request to Send enabled

RTS

Yellow

Off

Request to Send disabled

TD

Yellow

On

Modem is transmitting steady SPACE

TD

Yellow

Off

Modem is not transmitting data

TD

Yellow

Blinking

Modem is transmitting data

RD

Yellow

On

Modem is receiving steady SPACE

RD

Yellow

Off

Modem is not receiving data

RD

Yellow

Blinking

Modem is receiving data

DCD

Yellow

On

Carrier signal detected

DCD

Yellow

Off

Carrier signal not detected

TEST

Red

On

Modem in test mode

TEST

Red

Off

Modem not in test mode