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The AM Series are professional quality, agile audio/video modulators. They are equipped with the Emergency Alert System (EAS) feature,which can also be used as an alternate IF input. These units provide audio and video modulated RF carrier on any channel in 54 to550/750 MHz frequency range. The AM Series is ideal placing audio and video onto any unused channel (broadcast CATV, includingHRC and IRC assignments). Any standard audio/video source can be used, such as satellite receivers, television cameras, video taperecorders, or television demodulators. Agile channel selection permits on-the-fly channel changes and reduces the need for large inventories of channelized products. Channelselection is accomplished with the use of simple to use front panel accessible dip switches. These modulators have a wide range of standard and optional features that make them very suitable for advanced CATV systems. Fourmodels are available with different output levels, frequency ranges and a variety of options. All models feature rock solid, synthesized frequency control, with a tuning increment of 250 kHz. A custom SAW filter is employed toprovide true vestigial sideband selectivity with built-in FCC group delay pre-distortion. These modulators have an external IF loop, whichallows interfacing with video all-call and signal scrambling systems. The EAS Alternate IF feature allows the choice between manual andautomatic selection of EAS/ALT IF input signal. This is done through a 3 position terminal strip on the rear of the unit. The AM Series meets FCC Docket 21006 aeronautical frequency offset requirements (5 kHz video carrier accuracy). These modulatorsprovide extremely clean output signals with distortion products (-60 dB or better). An exceptionally low broadband noise floor (-76 dBcor better) makes the AM Series ideal for large, multiple channel headends without the need for additional filtering

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