AT&T Definity 6402D Dokumentacja Pobierz pdf (Strona 676)

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101

Data Modules

21-18 Issue 11 December 1999

Power Supply Unit

An individual power supply unit is required with the 7400D data module only when

it is used as a stand-alone module. When the 7400D is rack-mounted in a 77A

rack-mount, the rack-mount provides powering capabilities for up to eight units.

The power supply unit connects a grounded AC outlet and the “POWER”

connector at the rear of the data module. This power supply unit provides the

necessary operating voltages for the data module.

Test s

The 7400D data module supports only the Self- test.

Data Module Features

You can control the following operations via the 7400D’s front panel:

■ Option settings

■ Self-Test and Reset Options features

■ Adjustment of the contrast on the display

■ Answer/disconnect and busyout

The following features are also available:

■ Automatic or manual answering of incoming data calls

■ Synchronous full-duplex operation

■ Data rates of 300, 1200, 2400, 4800, 9600, and 19,200 bits per second

1 2 ... 671 672 673 674 675 676 677 678 679 680 681 ... 797 798

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