Catalog Index » HEADEND DIGITAL VIDEO PROCESSING » Highpass, Lowpass, and Deletion Filters
The 6211LP/HP are a series of lowpass and highpass filters that are factory assembled networks, consisting of channel deletion filters and custom designed lowpass and highpass filters. The combination results in a “brickwall” filter eliminating blocks of channels while preserving adjacent channels of interest. The primary applications include deleting blocks of channels for re-insertion purposes, while maintaining the integrity of close adjacent channels. These networks allow for maximum use of existing cable spectrum. The operating temperature for the 6211 series is from 13 C to 33 C.
The Microwave Filter 3271SUB, 3272 Series & 3271AB Series are analog (CATV) channel deletion filters.
Filter networks for suppressing an arbitrary number of contiguous channels are supplied to order. For only a few channels, a series connection of individual channel deletion filters is used. For a large number of contiguous channels, a special network is used. It’s components consist of a “Brickwall” lowpass and highpass filter and a pair of specially designed bandsplitters. For an intermediate number of contiguous channels, two single channel deletion filters establish the “Brickwall” ends while a less selective network deletes the middle of the specified stopband. Available for channels 2-116.
This bandpass ﬁlter isolates a single digital channel from all other CATV channels – including adjacents. Ideal for signal-conditioning of re-modulated programming.
The 17700 series of channel elimination filters delete entire QAM channel for the purpose of reinserting alternate programming.
The 17900 Series (Contiguous) Multi-Channel Deletion Network deletes a block of consecutive QAM channels – for the purpose of reinserting new programming within that block – without disrupting adjacent QAM (or analog) channels performance.
These filter series’ consist of a combination of “brickwall” channel deletion components and lowpass (or highpass) components. Each combination results in a “brickwall” lowpass (or highpass) filter assembly for adjacent QAM channel operation. The primary application is to delete an existing group of contiguous channel programs for the purpose of reinserting new programming (i.e. – cameras, educational programming, etc.), while preserving adjacent QAM channel programming.