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Application Notes
In any wireless system, interference is found in the wireless channel which may degrade the reception of desired signals. When the received power levels of an interfering signal are large relative to the desired signal, a wireless system will experience degradation or possibly an interruption of service. When multiple wireless systems attempt to coexist across the radio spectrum, it is possible that an “interference event” may occur. The IEEE defines an interference event as “a circumstance in which a quantified threshold level of interference has been exceeded,” and the threshold level can be set as a function of amplitude, frequency, time, and/or system performance. When investigating the types and origins of electromagnetic interference in a dynamic wireless environment, high-performance RF and microwave analyzers such as FieldFox are necessary tools when measuring the power levels of interfering signals as a function of time, frequency and location.
As interference testing often requires measurement and data collection in the environment surrounding a wireless system, a lightweight, battery-operated analyzer provides a convenient method for field testing in these rugged environments.
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