| The Commander 8 Upconverter (model C8U) is a next generation headend upconverter that builds on the award winning success of the Commander 6 Upconverter. The C8U leads the upconverter industry in performance and features, and is an ideal solution for both analog and digital headend and hub locations. Two frequency agile models, the C8U-L (50 to 600 MHz) and the C8U-H (550 to 1000 MHz), cover all current and future broadband frequency requirements up to 1 GHz, with a convenient 50 MHz frequency overlap between models. A C8U-LH model (one independent L and one independent H upconverter) is also available for special applications.
The C8U consists of dual independent upconverters in a reliable single rack unit (1RU) package, avoiding thermal and mating problems while providing space efficiency. A bright, wide, two-line vacuum fluorescent display (VFD) provides access to all upconverter controls and is accessed via a convenient menu system. Front panel access to independent RF and IF test points is provided. Easy rear panel fuse access is also provided.
Each independent upconverter in the C8U incorporates three switchable IF inputs for redundancy, emergency alert, or programming purposes, providing operational flexibility. These IF sources may be switched automatically or manually.
The C8U is network management ready, and is compatible with SNMP Network Management Systems via the LIFEnet proxy as well as with the Headend Control Software (HCS).
In a digital system, the C8U can accept any digital IF signal between 41.0 and 47.0 MHz. The C8U continues the C6U legacy of handling many types of digital signals including 64 QAM, 256 QAM, 8-VSB and QPSK signals.
In an analog system, the C8U supports addressable channels. An encoded composite IF signal is received from a scrambler such as Motorola’s MVP II, and upconverted to the desired RF channel for transmission.
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