Interacoustics Callisto AC440 Instructions For Use Manual page 9

D-0101246-M – 2020/05
Callisto™ - Instructions for Use - US
Only recorded speech material with a stated relationship with the calibration
signal should be used. In the calibration of the instrument it is assumed that the
calibration signal level is equal to the average level for the speech material. If
this is not the case, the calibration of the sound pressure levels will be invalid
and the instrument needs recalibration.
To establish conformity with the IEC 60645-2 standard, it is important that the
speech input level is adjusted to 0VU. It is equally important that any free field
installation is calibrated at the site where it is used and under the conditions that
exists during normal operation.
Great care should be exercised by the handling of earphones and other
transducers, as mechanical shock may cause change of calibration.
The specification for the instrument is valid if the instrument is operated within
the environmental limits specified in technical specifications.
Supply voltage: USB-powered (USB Type B connector).
To prevent system faults take appropriate precautions to avoid PC viruses and
similar.
Using operating systems where Microsoft have discontinued software and
security support will increase the risk for viruses and malware, which may result
in breakdowns, data loss and data theft and misuse.
Interacoustics A/S cannot be held liable for your data. Some Interacoustics A/S
products support or may work with operating systems unsupported by
Microsoft. Interacoustics A/S recommends you to always use Microsoft
supported operating systems that are kept fully security updated.
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