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Analog Signal Processing
Commander 6® Dual Upconverter [C6U-*]
* 1 GHz Frequency Agile Tuning
* Frequency selection in 12.5 kHz steps or by HRC, IRC, EIA or GI(STD) channel maps
* User Friendly Front Panel Interface
* Network Management Capable
* Dual independent upconverters in 1RU
* Internal sensors for IF and RF signals
* Automatic IF source switching
* DC Power Capable
The Commander 6 Upconverter (model C6U) is a flexible downstream communications link used in analog and digital headends and hubs. The C6U consists of dual independent upconverters which are frequency agile from 50 MHz to 1 GHz in a single rack unit (1U) package, using the latest technology in switching power supplies to minimize heat and increase power efficiency.
The C6U provides control of most parameters from the large eight-digit alpha-numeric LED display on its front panel. All parameters are microprocessor controlled for precision, accuracy, stability and reliability. In addition to the standard rear panel connections, a 0 dBmV IF test port and a -20 dB RF test port are available on the front panel for easy testing access.
In an analog system, the C6U supports addressable channels. An encoded composite IF signal is received from a scrambler, such as a GI MVP-II, and upconverted to the proper RF channel for transmission.
In a digital system, the C6U can accept any digital IF signal that is in the normal analog television IF frequency range. Using a GI Integrated Receiver Transcoder (IRT 1000), a 64 QAM signal is input to the C6U for upconversion to the desired downstream frequency.
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