LEX-2000

Digital Encoder and Statistical multiplexer

Drake EH24A Encoder Host (6 module capacity)

The Drake model EH24A Encoder Host is a platform for supporting modular MPEG2 and MPEG4 H.264 video encoders, including the SDE24, HDE24, and SDI24A. The EH24A multiplexes the encoder outputs into a single Clear QAM RF Channel with up to 12 subprograms, configurable via a front panel interface or remotely over a network by Ethernet web server via an Ethernet port located on the rear of the chassis. The EH24A includes provisions for emergency alert services, using either video replacement or SCTE 18 control messages and is fully compatible with Drake’s “Bandwidth Recovery Solution”.

The EH24A’s sophisticated transport stream multiplexer can combine any or all of the program streams from the Encoder Modules. The operator may select what programs to include in the QAM output channel and, independent of the QAM output, what programs to output via the DVB-ASI port. The QAM RF output can be specified for either off-air or CATV frequency plans in the 54 to 1002 MHz spectrum. The EH24A and installed Encoder Modules are powered by a highly efficient, integrated switching power supply.

SDE24 & SDE24A Standard Definition Encoder Modules

The SDE24 module can encode up to two input sources, source 1 and source 2 in real-time. The module may be configured to encode source 1 in either MPEG2 or MPEG4 (H.264) transport streams. Source 2 may be encoded in MPEG2 only. Thus each Encoder Module can output one MPEG2 stream, two MPEG2 streams, one MPEG4 stream, or one MPEG2 and one MPEG4 stream.

Each SDE24 module provides two sets of input connectors for NTSC composite with stereo audio. Audio is encoded using Dolby AC-3 encoding.

The SDE24A module can encode up to two input sources, source 1 and source 2 in real-time. The module may be configured to encode both sources 1 & 2 in either MPEG2 or MPEG4 (H.264) transport streams. Thus each Encoder Module can output one MPEG2 stream, two MPEG2 streams, one MPEG4 stream, or two MPEG2 and one MPEG4 stream.

Each SDE24A module provides two sets of input connectors for NTSC composite with stereo audio. Audio is encoded using Dolby AC-3 encoding.

HDE24 & HDE24A High Definition Encoder Modules

The Drake HDE24 high-definition encoder module generates an MPEG2 or MPEG4 (H.264) video stream, with Dolby® AC3 or MPEG1 layer 2 audio. This module is designed to be installed into Drake's EH24 or MEQ1000-style chassis which provides the control and output interface to the unit. This configuration of encoder module and host chassis provides the ultimate in bandwidth management and economy by allowing multiple HD and SD streams to be multiplexed together dependent upon the limitations of the bandwidth of the chosen output: QAM and/or ASI.

The HDE24 high-definition encoder accepts non-encrypted HDMI or component video inputs and can inject closed-captioning data from a synchronized composite video source (typically provided by the same decoder that produces the HD video stream). Composite analog audio inputs provide the audio source when component video inputs are used. Typically HDMI has embedded audio but if the HDMI is derived from a source converter that does not provide audio, such as DVI-to-HDMI, then the analog composite inputs may be used.

The Drake HDE24A high-definition encoder module generates an MPEG2 or MPEG4 (H.264) video stream, with Dolby® AC3 or MPEG1 layer 2 audio. This module is designed to be installed into Drake’s EH24A or MEQ1000A-style chassis which provides the control and output interface to the unit. This configuration of encoder module and host chassis provides the ultimate in bandwidth management and economy by allowing multiple HD and SD streams to be multiplexed together dependent upon the limitations of the bandwidth of the chosen output: QAM and/or ASI (see EH24A and MEQ1000A manuals for more information on multiplexing). The HDE24A high-definition encoder accepts non-encrypted HDMI or component video inputs and can inject closed-captioning data from a synchronized composite video source (typically provided by the same decoder that produces the HD video stream). Composite analog audio inputs provide the audio source when component video inputs are used. Typically HDMI has embedded audio but if the HDMI is derived from a source converter that does not provide audio, such as DVI-to-HDMI, then the analog composite inputs may be used.