Inventis TRUMPET User Manual page 10

The Trumpet has been tested under the following ambient
conditions:
Temperature between 18 °C and 28 °C
Relative humidity between 20% and 80%
Atmospheric pressure between 81.3 kPa and 106.3 kPa.
The Trumpet is designed for use after being positioned on a
stable work surface (such as a desk) or a suitable supporting
structure (such as a stand).
The Trumpet must be installed and operated taking account of
the information regarding electromagnetic compatibility (EMC)
provided in Appendix D of this manual
The proximity of portable and mobile appliances used for RF
communications can affect the operational efficiency of the
Trumpet
electromagnetic compatibility (EMC) provided in Appendix D of
this manual.
1.4.2 Calibration
The calibration of the audiometer and the REM probes is
dependable only for the transducers supplied with the
instrument. If a transducer is replaced, the instrument must be
recalibrated.
The calibration of the audiometer and the REM probes is
dependable for transducers supplied with the product, if
connected directly to the instrument, without any interposition
of extension leads and without the passage from connectors to
panel (as habitually occurs in soundproof booth installations).
If the transducers are not connected directly to the Trumpet , a
new calibration procedure will be required before the
instrument is used.
Calibration of the output in free field conditions can be
considered dependable as long as the acoustic properties of the
surroundings are not altered significantly. If this condition
cannot be maintained, or the instrument is moved, a fresh
calibration procedure will be required.
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box. Refer to the information regarding