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Banggood 50 ohm BNC feed-through terminator - a quick review
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MaxPi:
Here is my modification P57 for scope input.
It looks like the input capacity (or line length) differs in different ranges (<=100mV and >=200mV) in SDS1000X-E, as can be seen in the Smith diagram.
shapirus:
Interesting. What was the idea behind connecting the ground with that coiled wire? And same for placing the resistors at the farthest possible point from the scope input rather than the nearest.
MaxPi:
This is an inductance coil is approximately 13nH. It is needed to compensate for the drop in the input resistance with an increase in frequency, gradually reducing the influence of the parallel resistor.
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