Drake EH244 SERIES - Manual (Page 5)

EH244 ENCODER HOST SERIES
INTRODUCTION
General Description
The Drake Digital EH244 Encoder Host is a platform for supporting Drake Digital modular MPEG2
and H.264 video encoders, including the SDE24A, HDE24, and SDI24A. The EH244 Encoder Host
multiplexes the outputs of the Encoder Modules into a digital output (QAM RF, ASI stream, or Internet
Protocol data stream - IP, depending on which EH244 model you have purchased) stream, configurable
via a front panel interface or Ethernet web server. The EH244 Encoder Host also includes provisions
for Emergency Alert System (EAS), using either video replacement or SCTE18 control messages.
The EH244 Encoder Host accepts up to 6 Drake Digital Encoder Modules, and allows each encoder’s
output program to be included or excluded from the outgoing digital QAM RF Channels, IP program
data stream, or the ASI output stream (or a combination of these output formats). The EH244 Encoder
Host Series comes available in two base models that can be ordered with various output format
configurations tailored to your specific application requirements.
Models / Output Configurations
The EH244 Encoder Host Series is available in two standard models:
EH244-Q Quad QAM Encoder Host (Part Number 1002568)
This base unit outputs four (4) sequential Clear QAM RF channels.
EH244-IP (IP Output) Encoder Host (Part Number 1002578)
This base unit outputs a single (1) Internet Protocol (IP) data stream.
From these two base models, you may order alternate or additional output format configurations.
From the base EH244 Quad QAM Encoder Host, you may select the following additional output format
configuration:
EH244-Q-ASI Quad QAM / Quad ASI Encoder Host (Part Number 1002569)
This unit outputs four (4) ASI streams as well as four (4) Clear QAM RF channels.
The second base model in the EH244 Encoder Host Series, is the EH244-IP. The EH244-IP utilizes
a video codec to output MPEG transport streams encapsulated in a stream of IP (Internet Protocol)
packets. From the base model EH244-IP (IP Output) Encoder Host, you may select the following
additional output format configurations:
EH244-IP-ASI Quad ASI / IP Encoder Host (Part Number 1002579)
This unit outputs four (4) ASI streams in addition to a single (1) IP data stream.
EH244-Q-IP
Quad QAM / IP Encoder Host (Part Number 1002580)
This unit outputs four (4) Clear QAM RF channels in addition to the single (1) IP data stream.
EH244-Q-IP-ASI Quad QAM / IP / ASI Encoder Host (Part Number 1002593)
This unit outputs four (4) Clear QAM RF channels in addition to the single (1) IP data stream
and four (4) ASI streams.
*NOTE: All models / Output Configuration Types of the EH244 Encoder Host Series will have a
separate isolated ASI Output Port. This separate ASI Output is a low-data ASI port used
only to output SCTE-18 data for EAS or DTA MODES when daisy-chaining several EH244
Series or EH24 Series models together in a headend (see Chapter 2, INSTALLATION AND
MOUNTING on Page 6 for specific information).
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