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<P ALIGN="JUSTIFY">ASM-40 V.35 AND X.21

RAD DATA COMMUNICATIONS

ASM-40 V.35 AND X.21

Modem Type

Data (Synchronous)

Maximum Data Rate

2.048Mbps

Data Bus

External

Data Modulation Protocol

Proprietary

CONNECTIONS

Purpose

Location

Purpose

Location

V.35/X.21/G.703

CN1

Digital loopback switch

DIG

AC power

CN2

Analog loopback switch

ANA

Ground

GND

Remote loopback switch

REM

Receive

RCV

Test pattern

PATT

Transmit

XMT

   

ANALOG LOOPBACK

Setting

JP4

Enabled

Pins 1 & 2 closed

Disabled

Pins 2 & 3 closed

BAUD RATE

Setting

SW1

2.048Mbps

0

1.544Mbps

1

1.535Mbps

2

1.024Mbps

3

756Kbps

4

512Kbps

5

384Kbps

6

256Kbps

7

128Kbps

8

64Kbps

9

CHASSIS TO SIGNAL GROUND

Setting

JP12

Connected

Pins 2 & 3 closed

Disconnected

Pins 1 & 2 closed

CLOCK SOURCE

Setting

JP2/A

JP2/B

JP2/C

Internal

Closed

Open

Open

External

Open

Closed

Open

Loopback

Open

Open

Closed

ENABLE PUSHBUTTONS

Setting

JP8

DIG, ANA, REM, PATT enabled

Pins 1 & 2 closed

Disabled

Pins 2 & 3 closed

ERROR CORRECTION

Setting

JP7/A

JP7/B

JP7/C

Bypass

Closed

Open

Open

Random

Open

Closed

Open

Burst

Open

Open

Closed

LINE CODE

Setting

JP3/A

JP3/B

JP3/C

AMI

Closed

Open

Open

HDB3

Open

Closed

Open

B8ZS

Open

Open

Closed

LINE FREQUENCY

Setting

SW9

2048, 2024/1024, 512, 256, 128, 64

1

1544/1920

2

1536, 768, 384

3

LINE SIDE (coax cable)

Setting

JP11/A

JP11/B

JP11/C

JP11/D

Balanced

Open

Closed

Closed

Open

Unbalanced

Closed

Open

Open

Closed

Note: Non-coax cable, no jumper connections selected.

REMOTE LOOPBACK

Setting

JP5

Enabled

Pins 1 & 2 closed

Disabled

Pins 2 & 3 closed

T1/E1 IMPEDANCE

Setting

SW10

2048/1920

1

1544, 1536

2

V.54 DELAY

Setting

JP6

On

Pins 2 & 3 closed

Off

Pins 1 & 2 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