The Drake Digital™ EH24 platform is a 19” rack-mountable 2RU chassis that accepts up to six real-time Drake Digital™ SDE24 MPEG2/MPEG4 video encoder modules. The Drake Digital™ SDE24 MPEG encoders contain two video encoders each, enabling the Drake Digital™ EH24 to accept 12 different video input sources/channels to be multiplexed after encoding (when populated with six SDE24 modules). The EH24 accepts any number of SDE24 modules (1-6) adding two video programs per module.
The Drake Digital™ EH24 Contains a multiplexer that can multiplex from two to twelve programs, encoded in user-selectable MPEG2 or MPEG4 datacompression by the Drake Digital™ SDE24 module, into a multiple program transport stream (MPTS). This MPTS is then output via an ASI output port on the rear panel of the EH24 and the stream is also directed to an internal QAM modulator. After QAM modulation, the QAM modulated IF signal is internally upconverted to any desired RF output frequency specified by CATV or off-air frequency plans, in the 54 to 1002 MHz spectrum.
The Drake Digital™ SDE24 is a MPEG Encoder. It has 2 inputs, both of which can be either a composite video or a S-video input. These analog inputs are encoded to a digital transport stream using either MPEG2 or MPEG4 encoding. User-selectable parameters include: encoding bitrate, brightness level, contrast, and a few others. The Drake Digital™ EH24 provides the front panel to do the setup of the SDE24s, and then takes the MPEG-encoded transport stream outputs of the SDE24’s and multiplexes them together to either a QAM or an ASI output.
The unit is powered by a built-in nominal 120 VAC/47-63 Hz supply.