Hioki 9279, Instruction Manual, Page: 42 / 54

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Chapter 2 Measurement Procedure
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NOTE
To measure small current levels, multiple
windings may be used to increase the relative
sensitivity. 10 windings multiplies the
measured current by about a factor of 10.
However, in this case the diameter of the
winding should be 20 cm or more, and radial.
This product has a resistance in series with the
signal output circuits. Therefore, if measuring
an output signal directly, ensure that the input
resistance of the measuring instrument is
sufficiently high.