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Local end remote end – Comtech EF Data C5 User Manual

Page 259

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C5/K1/K3 Integrated Satellite Terminal System

Options

Rev. 0

A–15

Before remote ASYNC communications can be implemented, the following must occur:

! At both the local and remote modems, front panel configuration parameters must

be set for each type of configuration.

! Industry-standard cables must be used at both modems.

To implement remote ASYNC operation, use the configuration information found in the
applicable section and perform the following steps:

1. Set the jumpers on the remote modem M&C/Display PCB according to the

information found in the applicable configuration section.

2. Set the local modem front panel controls according to the information found in

the applicable configuration section.

3. Connect the local modem 25-pin ASYNC connection (via breakout panel or Y

cable) to the terminal using the pinout information found in the applicable
configuration section. Refer to Figure A-2.

4. Set the remote modem front panel controls according to the information found in

the applicable configuration section.

5. Connect the remote modem 25-pin ASYNC connection (via breakout panel or Y

cable) to the 9-pin J6 port at the rear of the modem using the pinout information
found in the applicable configuration section. Refer to Figure A-3.

WYSE

REMOTE TERMINAL

(OR EQUIVALENT)

ASYNC INTERFACE

ASYNC INTERFACE

V.35

DATA

CONNECTOR

25-PIN

ASYNC

CONNECTOR

REMOTE EIA-485

(4-WIRE)

CABLE

(9-PIN TO 25-PIN)

J8

J6

TX -30 dBm

RX

RX

TX -30 dBm

J8

V.35

DATA

CONNECTOR

25-PIN

ASYNC

CONNECTOR

LOCAL EIA-485

(4-WIRE)

CABLE

(9-PIN TO 25-PIN)

EIA-485

25-PIN CONNECTOR

TO

9-PIN CONNECTOR

(INDUSTRY STANDARD)

CA/4056

CA/4056

LOCAL END

REMOTE END

BENCH TEST

50-PIN

50-PIN

Figure A-2. Remote ASYNC Connection Diagram for Y Cable

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