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SDS2000X HD Series Digital Oscilloscope User Manual
2 3 4 i n t . s i g l e n t . c o m
Limit Value (RMS) -- Limits specified by the selected standard
Margin (%) --The margin specified by selected standard parameters. The margin value is (standard
value - measured value) / standard value * 100%
Pass/Fail State -- Determine whether the measured value is passed or failed according to the
selected standard. The rows in the table or the bars in the bar chart are rendered in different colors
based on the pass / fail state. When the value is greater than 85% of the limit but less than 100% of
the limit, it is defined as a critical state.
Total Harmonic Distortion（
THD）=100%
X
+X
3
++X
X
， where X
n
is the nth harmonic, and X
1
is
the basic component.
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