The instrument must be stored and used within the specified temperature,
pressure and humidity ranges (see Sections 7 and 9).
Do not attempt to open, modify or service the instrument. Return the
instrument to the manufacturer or distributor for all repair and servicing
requirements. Opening the instrument will void the warranty.
2.2 Electromagnetic compatibility (EMC) considerations
Medical electrical equipment needs special precautions regarding EMC
and needs to be installed and put into service according to the EMC
information provided in Appendix 1. This provides guidance on the
electromagnetic environment in which to operate the instrument.
Portable and mobile radio-frequency (RF) communications equipment can
affect medical electrical equipment. The instrument should not be used
adjacent to or stacked with other equipment; if this is necessary the
instrument should be observed to verify normal operation.
2.3 Power supply options
The audiometer is designed for continuous operation and may be
powered either by a mains adapter (which is supplied, and specified as
part of the equipment) or optional internal batteries.
Battery operation
To fit batteries (if configured for this option), remove the battery
compartment cover on the base of the audiometer, fit the 4 x 1.5V ‘C’
batteries supplied (UK only) according to the indications on the battery
holder and replace the battery cover.
Batteries should only be changed outside the patient
environment. The operator should not touch the
battery connectors and the patient simultaneously.
Note: If using batteries, the instrument will automatically switch off
approximately 90 seconds after the last key was pressed in order to save
battery power. Any test results will be automatically saved.
The display will show “Low Batt” when the battery voltage is low. It is
advisable to change the batteries as soon as this happens. Once the
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