17
When an RF tag cannot be read/written correctly
Cause
Measure
Effect of metal When an RF tag is placed on a
metal plate, it may not be
read/written.
Keep an RF tag 15 cm or more away from
a metal plate.
Effect of
electromagnetic
noise
If you use the scanner near electric
appliances which generate
electromagnetic noise, including an
inverter fluorescent light,
microwave oven, and
electromagnetic cooking device,
etc., it may not be able to read and
write RF tags.
Do not use the scanner near electric
appliances which generate
electromagnetic noise, including an
inverter fluorescent light, microwave
oven, and electromagnetic cooking device,
etc.
Radio
interference
If there is any other RFID device
near the scanner, it may not be able
to read/write RF tags.
If the scanner is used near other
radio devices such as a personal
radio station or an amateur radio
station, it may not be able to
read/write RF tags.
Do not use the scanner near other RFID
devices.
Do not use the scanner near other radio
devices such as a personal radio station or
an amateur radio station.
Distance from
an RF tag
If the distance from an RF tag is too
close or too far, the scanner may not
be able to read/write it. The writable
distance may be shorter than the
readable distance.
The readable and writable distances vary
according to the RF tag type. Slowly move
the scanner toward and away from an RF
tag to find the readable and writable
distances.
