Symbol Technologies MC3574 Users Manual

Addendum

MC35 EDA User Guide

FCC Hearing Aid Compatibility

Your device is compliant with the FCC Hearing Aid Compatibility (HAC) requirements.
When some wireless devices are used near hearing devices (such as hearing aids and
cochlear implants), a buzzing, humming, or whining noise may be detected. Some
hearing devices may be more immune than others to this interference, and wireless
devices also vary in the amount of interferences they generate.

The FCC rules governing hearing aid compatibility requires wireless devices to fulfill the
telephone near field category M3 or higher categor y. The M-rating generally indicates a
wireless device has a lower radio frequency (RF) emissions level or interference with
hearing devices. Some hearing aids may be more immune than others are to
interference. Consult your hearing health-care professional to determine the rating of
your hearing aid and whether the hearing aid will work with this device,

Using the hearing aid compatible feature

MC35 has predefined profiles that are set. Some, for example, home, office, portable
hands free, HAC and other options may be adjusted to suit a certain environment or an
accessory.

The HAC mode optimizes audio performance for some hearing aids. To activate the HAC
mode:

NOTE: Make sure your device is turned on. Refer to the MC35 EDA User Guide for more information.

1 Tap > Settings .

2 On the System tab, tap Phone Profiles .

Addendum

3Tap HAC.

4Tap Menu > Active.

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