1.3 Measurement Example
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This section provides a measurement example using this tester.
Measurement location :
Anechoic chamber*1
Device under test
:
exposure level (general public) of magnetic
fields generated by an electric rice cooker
Measurement location, distance
*2
:
around, 30 cm
*3
State of device under test *2
: Half-filled with water, and maxi-
mum heat setting
Measurement time
:
a few seconds at each measurement point
Storage of measurement data :
tester memory and PC memory
Required equipment
:
FT3470-50
100 cm
2
or 3 cm
2
Magnetic field sensor
Batteries or AC adapter
PC
USB cable
*1: A location where magnetic fields other than that generated by the DUT is minimal
and where there are no magnetic fields or metal objects in the vicinity that could be
affected by the measurements. An anechoic chamber is not required if the above
conditions can be met.
Measurements performed in an anechoic chamber should be performed at a cer-
tain distance from the walls, which are made of a magnetic material.
*2 : Since these parameters depend on the measurement target, it is necessary to refer
to IEC/EN62233 or other relevant specifications.
*3 : This value comes from IEC62233 Ed.1.0. Note that it may change when the stan-
dard is revised.
1.3 Measurement Example
Objective: to measure magnetic field exposure generated by products to determine
whether they pass or fail the requirements to obtain a CE marking.
Be sure to measure areas that
generate maximum exposure to
magnetic fields.
In this example, r1 = 30 cm.
DUT (device under test)
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