RAD DATA COMMUNICATIONS

ASM-45

Modem Type

Data (Synchronous)

Maximum Data Rate

768Kbps

Data Bus

External

Data Modulation Protocol

Proprietary

CONNECTIONS

Purpose

Location

Purpose

Location

V.35/X.21/RS-530

CN1

Fuse

FUSE

AC power

CN2

Digital loopback switch

DIG

Ground

GND

Analog loopback switch

ANA

Receive

RCV

Remote loopback switch

REM

Transmit

XMT

Test pattern

PATT

ANALOG LOOPBACK

Setting

JP5

Enabled

Pins 2 & 3 closed

» Disabled

Pins 1 & 2 closed

BAUD RATE

Setting

JP1/A

JP1/B

JP1/C

JP1/D

JP1/E

768Kbps

Closed

Open

Open

Open

Open

512Kbps

Open

Closed

Open

Open

Open

384Kbps

Open

Open

Closed

Open

Open

» 256Kbps

Open

Open

Open

Closed

Open

128Kbps

Open

Open

Open

Open

Closed

CD SIGNAL

Setting

JP3

CD normal

Pins 2 & 3 closed

» CD forced high

Pins 1 & 2 closed

CHASSIS TO SIGNAL GROUND

Setting

JP9

» Connected

Pins 1 & 2 closed

Disconnected

Pins 2 & 3 closed

CLOCK SOURCE

Setting

JP2/A

JP2/B

JP2/C

External

Closed

Open

Open

» Internal

Open

Closed

Open

Receive

Open

Open

Closed

REMOTE LOOPBACK

Setting

JP6

Enabled

Pins 2 & 3 closed

» Disabled

Pins 1 & 2 closed

TRANSMIT LEVEL

Setting

JP4

» 0dBm

Pins 2 & 3 closed

-6dBm

Pins 1 & 2 closed

V.54 DELAY

Setting

JP7

» Off

Pins 1 & 2 closed

On

Pins 2 & 3 closed

X.21 CLOCK SOURCE

Setting

JP8

External

Pins 1 & 2 closed

» Internal

Pins 2 & 3 closed

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

ERR

Yellow

On

Errors in test pattern

ERR

Yellow

Off

Good test pattern

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