Rion NL-42A, Инструкция по эксплуатации, Страница: 12 / 154

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Precautions
Operate the unit only as described in this manual.
The NL-42A/NL-52A is a precision instrument. Protect it from shocks
and vibrations. Take special care not to touch the microphone diaphragm.
The diaphragm is a very thin metal fi lm which can easily be damaged.
Use only the microphone/preamplifi er assembly with the number as shown
on the name plate of the unit.
Do not use the preamplifi er of this unit with sound level meters of other
models. It may cause the preamplifi er to fail.
Ambient conditions for operation of the unit are as follows: temperature
range −10°C to +50°C, relative humidity 10% to 90% RH. Protect the
unit from water, dust, extreme temperatures, humidity, and direct sunlight
during storage. Also keep the unit away from air with high salt or sulphur
content, gases, and stored chemicals during storage and use.
If it starts raining while using the unit outside, stop the measurement and
protect the unit from getting wet. In case the unit gets wet, wipe it with
a dry cloth and let it dry in a well-ventilated place.
The power cord used to connect the optional AC adapter to an AC outlet
is a 100 V AC cord for domestic use in Japan, which is compliant with
Japanese laws and electrical safety standards. Do not use this power cord
outside Japan or with any voltage other than 100 V AC. Otherwise, RION
cannot guarantee the safety of the equipment. Use a power cable that is
compliant with the laws and electrical safety standards of your location.
If you notice any sign of a problem during use, disconnect the AC adapter,
remove the battery, and contact your supplier.
Always turn the unit off after use. Remove the batteries from the unit
if it is not to be used for a long time. Otherwise battery fl uid may leak,
posing a risk of corrosion and damage. Also disconnect the AC adapter
or battery pack.
When disconnecting cables, always grasp the plug and do not pull the
cable.
Before using the unit and before putting it away, always check that the
microphone and microphone grid has not become loose. If this has happened,
refasten the microphone grid fi rmly and then use or store the unit.
Store this unit in the right place in the supplied storage case.