Widex UNI-DEX User Manual

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a. Field strengths from fixed transmitters, such as base stations for radio (cellular/

cordless) telephones and land mobile radios, amateur radio, AM and FM radio

broadcast and TV broadcast cannot be predicted theoretically with accuracy. To

assess the electromagnetic environment due to fixed RF transmitters, an electro-

magnetic site survey should be considered. If the measured field strength in the

location in which the UNI-DEX is used exceeds the applicable RF compliance level

above, the UNI-DEX should be observed to verify normal operation. If abnormal

performance is observed, additional measures may be necessary, such as re-ori-

enting or re-locating the UNI-DEX.

b. Over the frequency range 150 kHz to 80 MHz, field strengths should be less

than 3 V/m.

Recommendedseparationdistances

Recommended separation distances between portable and mobile RF

communicationequipmentandtheUNI-DEX

The UNI-DEX is intended for use in the electromagnetic environment in

whichRFdisturbancesarecontrolledThecustomerortheuseroftheUNI-

DEXcanhelppreventelectromagneticinterferencebymaintainingamini-

mumdistancebetweenportableandmobileRFcommunicationsequipment

(transmitters)andtheUNI-DEXasrecommendedbelowaccordingtothe

maximumoutputpowerofthecommunicationsequipment

Rated maximum

output power of

transmitter

Separation distance according

to frequency of transmitter

150 kHz to

80 MHz

d = 1.2

√P

80 MHz to

800 MHz

d = 1.2 √P

800 MHz to 2.5 GHz

d = 2.3

√P

0.01 0.12 0.12 0.23

0.1 0.38 0.38 0.73

1 1.2 1.2 2.3

10 3.8 3.8 7.3

100 12 12 23

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Widex UNI-DEX Audio and Phone Adapter