Wegener Communications 4422 - Manual (Page 11)

Page 11
Page 11 of 72 UTY4422-002
SECTION 1
GENERAL INFORMATION
1.1 GENERAL
The purpose of this manual is to describe the proper installation and operation of the Wegener
Communications UNITY4422
MPEG Video Decoder.
1.2 INTRODUCTION
The UNITY 4422 unit is an MPEG decoder designed to receive its input from a DVB-ASI input
source. These inputs include the new 4:2:0 and 4:2:2 chroma formats, as well as the traditional
4:3 and new 16:9 aspect ratios. The input is a DVB-compliant signal, which is processed to
produce
NTSC or PAL video, audio, e-mail (front panel text) output, and electronic-relay cueing
signals. The unit is fully network-controlled via the Wegener Communications, Inc. (WCI)
COMPEL  control system.
The optional decryption feature allows for use of WCI COMPEL Conditional Access
( COMPEL-CA ™). Authorization of each unit is under network control.
In addition to network control, the unit features a front-panel LCD interface, for unit control and
viewing local status information. In addition, limited control of the unit (if allowed by the
COMPEL
 network) may be implemented via serial port, connecting either to a local terminal
or (via phone modem) to a remote terminal.
The UNITY4422 normally has expansion ports for two add-in modules. This unit, the DVB-
ASI Input model, has the DVB-ASI Input board mounted as Module 1. Therefore, there is only
room for one additional add-in module. Contact the Wegener Sales Department about available
options.
1.3 UNPACKING AND INSPECTION
Carefully unpack the unit and inspect it for obvious signs of physical damage that might have
occurred during shipment. Any damage claims must be reported to the carrier immediately. Be
sure to check the package contents carefully for important documents and materials.
1.4 INSTALLATION INSTRUCTIONS
To avoid damage to this and other equipment, or personal injury, the following items should be
strictly observed.
1.4.1 Elevated Operating Ambient
If equipment is installed in a closed or multi-unit rack assembly, the operating ambient of the
rack may be greater than the room ambient. Therefore, considerations should be given to the
TMRA , or Temperature inside the Mounting Rack, and not just inside the room.