Non-Invasive Testing Methods to Determine the RF Performance of Consumer DTV Receiving Appliances

The author of the paper proposes that the entire range of usable DTV desired signals should be explored, non-invasively to determine the receiver´s robustness to interference from first adjacent channel DTV signals, and DTV signals on 2^nd, 3^rd, 4^th adjacent channels with one undesired signal involved. Here the interference mechanism is primarily cross-modulation a form of 3^rd order inter-modulation. In addition, the author proposes tests for true inter-modulation between two undesired DTV signals on those channel pairs known to produce a 3^rd order intermodulation product falling in the desired channel.