Introduction
Instruction Manual: evolution 5000 E5500 Mobile Contribution Encoder
Page 1-5
ST.TM.E10033.3
Hardware Configuration
Each piece of hardware has a specific reference number. These are linked
to give a hardware configuration number (see Figure 1.4) for the whole
unit. The first part of the number refers to the enclosure and any
mandatory modules, and each subsequent part refers to an option module.
Refer to Table 1.7 for the positions of each option module.
Build Revision
The build revision number (see Figure 1.4) refers to the physical status of
the enclosure and any option modules at the time the equipment was
shipped from the factory.
Firmware / Software Versions
This manual has been written to cover the functionality of the firmware
versions which are contained within the build standard identified on the
information label (see the rear of the Encoder and also Figure 1.4).
This manual continues to be relevant to subsequent build standards where
the functionality of the equipment has not changed. Where the build
standard changes the functionality, a new issue of this manual is provided.
1.2
Role of the MCE
1.2.1
Typical System
The Mobile Contribution Encoder (MCE) is a transportable digital exciter
designed specifically for mobile contribution applications. It is compact and
lightweight, fully MPEG-2 and DVB compliant, and has high performance
for the transmission of studio-quality video material. The equipment is
designed to be suitable for both flyaway use (within an appropriate flight
case) and truck installation.
The Encoder comprises a single video encoder, two stereo audio encoders
(dual standard MPEG-1 (layer 2)/Dolby Digital) and general purpose VBI
extraction and encoding circuitry.
High quality video encoding is ensured by the inclusion of digital noise
reduction techniques and many other proprietary algorithms as well as
standard MPEG compression techniques. Hierarchical motion estimation is
also used.
Video is input to the unit in Composite, Component or serial digital (SDI)
format. There is also a logo overlay facility allowing broadcasters to
trademark material.
Transponder bandwidth can be traded with video quality by operating the
video compression bit-rate in the range 1.5 – 45 Mbit/s. Over this
operating range, encoded video resolution can be controlled in order to
optimise subjective encoding performance.
The MCE encodes up to four channels of audio, which may be configured
as four mono channels or two stereo pairs, input as either analogue or
AES/EBU digital audio.
