Overview..................................................................................................................................................xv

Related Documents..................................................................................................................................xv

About Marks Used in This Manual ........................................................................................................xvi

Chapter 1. Requirements ........................................... 1-1

Model Numbers ..................................................................................................................................... 1-1

FCC Requirements................................................................................................................................. 1-1

Environmental Requirements ................................................................................................................ 1-4

Cleaning................................................................................................................................................. 1-5

Chapter 2. System Overview ..................................... 2-1

Cabinet Description ............................................................................................................................... 2-1

Cabinet Configurations.......................................................................................................................... 2-3

Circuit Cards.......................................................................................................................................... 2-4

Circuit Card Configuration ................................................................................................ 2-4

Card Descriptions ............................................................................................................... 2-5

Chapter 3. Cabinet Installation.................................. 3-1

Installation Location .............................................................................................................................. 3-1

Removing and Replacing Covers .......................................................................................................... 3-2

Front Cover ........................................................................................................................ 3-3

Side cover ........................................................................................................................... 3-4

Top Cover (Base Cabinet Only) ......................................................................................... 3-5

Cabinet Installation................................................................................................................................ 3-6

Grounding .............................................................................................................................................. 3-8

Battery Backup (VB-44025).................................................................................................................. 3-9

-48 Volt Power Supply (VB-44022).................................................................................................... 3-11

Card Installation................................................................................................................................... 3-13

576-13-300

DBS 576 (USA), issued 6/2/98

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