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SWR-584C Instruction Manual
HF/VHF/220MHz SWR Analyzer
[ ] Press Gate again for 1.0-sec gate time:
Gate Time 1.0s
146.7000MHz 1.0s
Freq. Counter
To return to the 0.1-sec default speed, press Gate again. Note that response time to
commands entered in the 1.0-sec gate setting is very slow. It may take several seconds for the
function to come up initially and several more seconds before it will respond to the command
to return to default.
5.0 Advanced Measurements
5.1 Introduction: The Advanced Menu provide accurate Distance to Fault measurement for
pinpointing transmission line problems in Feet. It also provides Resonance detection, useful for
quickly identifying the exact frequencies where X=0. In addition, it measures Impedance
Magnitude (Z, ) as the primary display function -- eliminating the requirement to press and
hold down the Gate switch when making those measurements.
Finally, Advanced mode measures Return Loss, Reflection Coefficient, and Match Efficiency,
all engineering parameters directly related to SWR. Note that, for general antenna work, SWR
remains the most universally applied measure of array performance -- and it is really the only
data needed to get most jobs done. Advanced terms address SWR from different technical
perspectives and applying them correctly usually requires a deeper understanding of RF
engineering principles. For reference purposes, the chart below illustrates how these and other
advanced engineering concepts all equate directly to the basic SWR measurement:
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