Hioki 2304-20, Instruction Manual, Page: 10 / 40

Notes on Use
6
To avoid damage to the instrument, protect it
from physical shock when transporting and
handling.
Be especially careful to avoid physical shock from
dropping.
Do not obstruct the ventilation holes.
Ventilation holes for heat radiation are provided on
the top and rear panels of the instrument. Leave
sufficient space around the ventilation holes and
install the instrument with the holes unobstructed.
Installation of the instrument with the ventilation
holes obstructed may cause a malfunction or fire.
When using the instrument in the case, drill
ventilation holes.
Drill ventilation holes or install a ventilation fan to
prevent heat buildup.
Correct measurement may be impossible in the
presence of strong magnetic fields, such as near
transformers and high-current conductors, or in
the presence of strong electromagnetic fields such
as near radio transmitters.