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CMN-C8H/V.24, CMN-C8H/V.35, CMN-C8H/X.21, CMN-C8H/530

RAD DATA COMMUNICATIONS

CMN-C8H/V.24, CMN-C8H/V.35, CMN-C8H/X.21, CMN-C8H/530

Card Type

Modem (synchronous/asynchronous)

Chipset

Unidentified

Data Rate

56Kbps/64Kbps

Data Modulation

Unidentified

Data Bus

Serial

CONNECTIONS

Function

Label

Function

Label

V.24, V.35, X.21, or RS-530 serial port via DB-25 connector

CN1

Unidentified

CN3

Telephone line out

CN2

Loopback test switch

SW6

Note: Standard V.35 or X.21 connector is provided on an included adapter cable.

USER CONFIGURABLE SETTINGS

Setting

Label

Position

í Line speed set to 64Kbps

SW1/4

Off

Line speed set to 56Kbps

SW1/4

On

í Stop bit shortening for asynchronous mode set to 25%

SW1/5

Off

Stop bit shortening for asynchronous mode set to 12.5%

SW1/5

On

í DCD forced high

SW2/2

On

DCD follows RTS

SW2/2

Off

í Pin 18 of CN1 has no function

SW2/3

Off

Pin 18 of CN1 begins local analog loopback test

SW2/3

On

í Pin 21 of CN1 has no function

SW2/4

Off

Pin 21 of CN1 begins remote digital loopback test

SW2/4

On

CLOCK SOURCE SELECTION

Setting

SW1/1

SW1/2

SW1/3

í Internal clock source

Off

Off

Off

External clock source

On

Off

Off

Received clock source

Off

Off

On

Asynchronous mode

Off

On

Off

DATA LENGTH SELECTION

Setting

SW1/6

SW2/1

8 bits

Off

Off

9 bits

Off

On

í 10 bits

On

Off

11 bits

On

On

SERIAL PORT CONFIGURATION

Setting

SW3

SW4

SW5

í DCE

On

On

On

DTE

Off

Off

Off

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

PWR

Green

On

Power is on

PWR

Green

Off

Power is off

XMT

Yellow

On

Modem is transmitting data

XMT

Yellow

Off

Modem is not transmitting data

RCV

Yellow

On

Modem is receiving data

RCV

Yellow

Off

Modem is not receiving data

DCD

Yellow

On

Carrier signal detected

DCD

Yellow

Off

Carrier signal not detected

TST

Red

On

Modem is in test mode

TST

Red

Off

Modem is not in test mode

MISCELLANEOUS TECHNICAL NOTE

This card is intended for use in the CMN-16 rack-mount system. The bus is used only for supplying power for the card. All other card functions are accessed through the serial port.