8.2 Test Environment: Ambient Noise
Excessive sounds or noises in the chosen test
environment can produce a masking effect and
therefore affect test results. The selected site should
be away from conversations, hallway traffic, outside
auto traffic, and other noise producing
environments.
The lower test frequencies are most affected by
these types of noise. In some instances it may be
necessary to treat the test site acoustically to achieve
the necessary quietness for testing purposes.
Commercially available sound rooms, which are
designed to provide an acoustically treated testing
environment, are recommended where baseline or
threshold audiometry is required. These rooms are
available in a variety of sizes and isolation
capabilities. Audiocup(TM) earphone enclosures fit
over the DD-45 earphones and provide
supplementary attenuation to noise. These can be
used instead of, or in addition to, a sound room.
4.0
INSPECTION AND ACCESSORIES
4.1
External Inspection
Your MA1 was currently inspected and packaged
for shipping; however, it is good practice to
thoroughly inspect the outside of the shipping
container for signs of damage. If any damage is
noted after unpacking, notify your carrier
immediately.
4.2
Unpacking
Open the top of the shipping carton and pull the
foam packing from the top of the instrument.
Carefully remove your MA1 from the shipping
carton. Remove the plastic bag from the instrument
and inspect the case for any damage. Notify the
carrier immediately if any visual damage is noted.
This will assure that a proper claim can be made.
Save all packing material so the claim adjuster can
inspect it as well. Notify Maico as soon as the
adjuster has completed the inspection.
SAVE ALL THE ORIGINAL PACKING MATERIAL AND THE
SHIPPING CONTAINER SO THE INSTRUMENT CAN BE WELL
PACKED IF IT NEEDS TO BE RETURNED FOR SERVICING OR
CALIBRATION.
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