7
Safety, Care and Maintenance
Keep the unit away from heat sources such as radiators, heaters, or other appliances that
produce heat�
Do not expose the unit to direct sunlight�
Do not use the unit near water�
Avoid objects or liquids getting into or onto the unit�
Clean only with a damp cloth� Do not use abrasive cleaners�
Do not remove screws from or open the unit casing� This will invalidate the calibration and
any warranty�
Damage to hearing can occur with consistent exposure to high volume when using
headphones� Always check the volume level before using headphones�
Calibration
The unit is calibrated in three points, (-12dB, -6dB, and 0dB) to meet IEC6 60118-4
requirements� If measurement accuracy is critical the instrument should be recalibrated
annually� Have the calibration rechecked if the instrument is dropped or otherwise
damaged�
Batteries
Press and slide battery cover to remove�
Orientate the battery as shown in the battery compartment molding� No harm will occur if
the battery is reversed but the instrument will not work�
Rechargeable batteries are not recommended for infrequently used equipment due to
self-discharge but can be used in the instrument� Operating life will be shorter from a
rechargeable battery than from the alkaline battery�
Replace the battery as soon as convenient aer the red range indicator(s) start to flash�
Switch off the meter when not in use to prolong the working life of the battery�
Remove the battery if not required for an extended period of time and remove an
exhausted battery as soon as possible to prevent leakage�
Dispose of the old battery according to the local regulations�