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5 Before starting source/measurement
Operating Precautions
Precautions for Safe Use of the Instrument
When using the instrument for the first time, be sure to read the instructions given in Section Four
“Precautions for Safe Use of the Instrument.”
Do not open the instrument’s case.
Contact the vendor from which you purchased the instrument, for a service of inspecting or
adjusting the internal assembly.
In case of failure
Should the instrument begin to emit smoke, give off an unusual odor, or show any other anomaly,
immediately turn off the POWER key. If you are using an Charger, disconnect the plug from the
wall outlet. Also cut off power to the object under test that is connected to the input terminals.
Then, contact the vendor from which you purchased the instrument.
Charger
Use an Charger dedicated to the instrument. Avoid placing any load on the Charger, or prevent any
heat-emitting object from coming into contact with the adapter.
General Handling Precautions
Before carrying around the instrument turn off power to the object under test, and then the POWER
key of the instrument. If you are using an Charger, disconnect the power cord from the wall outlet.
Finally, detach all lead cables from the instrument. Use a dedicated carry case when transporting
the instrument.
Do not bring any electrified object close to the input terminals, since the internal circuit may be
destroyed.
Do not apply any volatile chemical to the instrument’s case or operation panel. Do not leave the
instrument in contact with any product made of rubber or vinyl for a prolonged period. Be careful
not to let a soldering iron or any other heat-emitting object come into contact with the operation
panel, as the panel is made of thermoplastic resin.
Before cleaning the instrument’s case or operation panel disconnect the power cord plug from the
wall outlet if you are using an Charger. Use a soft, clean cloth soaked in water and tightly
squeezed to gently wipe the outer surfaces of the instrument. Ingress of water into the instrument
can result in malfunction.
If you are using an Charger with the instrument and will not use the instrument for a prolonged
period, disconnect the power cord plug from the wall outlet.
For handling precautions regarding the batteries, see “Installing or Replacing the Batteries”.
Never use the instrument with the cover of the battery holder opened.
Environmental Requirements
Use the instrument in locations that meet the following environmental requirements:
Ambient temperature and humidity
Ambient temperature range: 0 to 50℃
Ambient humidity range: 30 to 80% RH. Use the instrument under non-condensing condition.
Flat and level locations
Do not use the instrument in locations that are
Exposed to direct sunlight or close to any heat source.
Exposed to frequent mechanical vibration.
Close to any noise source, such as high-voltage equipment or motive power sources.
Close to any source of intensive electric or electromagnetic fields.
Exposed to large amounts of greasy fumes, hot steam, dust or corrosive gases.
Exposed to unstable or a risk of explosion due to the presence of flammable gases.