Case Study Analyzing DTF and VSWR Efficiently with the CellAdvisor JD720C Alternate DTF band feature enables simultaneous measurements Selecting the appropriate frequency range is not as obvious as it may seem. For return loss measurements, the specification usually calls out the frequency range over which the data is to be taken. For distance to fault (DTF) analysis, the resolution and maximum distance range are dependent upon the frequency sweep range, the number of frequency data points, and the relative propagation velocity of the cable being tested. Therefore, the frequency range must be chosen carefully. For checking DTF on transmission lines, a large frequency span is desirable to highlight potential faults or areas of performance degradation (better resolution). However,

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