ATL ATU Telex Unit Panduan Pengoperasian dan Pemasangan - Halaman 6

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1. INTRODUCTION

The ATL Telex Unit (ATU) enables a computer, word processor, or other

intelligent device to operate as a telex terminal, and thus send and

receive messages over the national and international telex network.

The computer or word processor to which the Telex Unit is connected

is referred to as the Host equipment. The interface to the Host

equipment is CCITT V24/V28 (equivalent to EIA RS 232-C).

The Telex Unit can operate with a variety of different Host software

applications and across a range of Host equipment. Since there are

variations in the pin connections on the interface of the Host

equipment, it is the responsibility of the installer to provide the

connection cable between the Telex Unit and the Host equipment.

These instructions should also be read in conjunction with any

installation instructions issued by the Host equipment manufacturer.

There is only one control on the Telex Unit, the RESET button that

allows the user to execute a hardware reset of the Telex Unit.

Commands from the Host carry out any other necessary changes in its

operating mode. These include a reset command, which must be

entered each time the Telex Unit is powered up, or the RESET button

is pressed and each time a reset (fault) condition is indicated.

Five LEDs on the Telex Unit give indications of Run/Reset condition and

of transfers in each direction on the telex line and on the host

interface.

The physical characteristics of the ATL Telex Unit are as follows: -

Size: 250mm x 275mm x 60mm (W x D x H)

Weight: 2.8 Kg.

The unit can accept a mains voltage variation of ± 10% from the

nominal value stated on the unit. The power consumption is between

5W and 15W.

If any doubts arise concerning the operation of the Telex Unit,

reference should be made to the host equipment supplier.