SBM 50 User Manual

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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 envi-

ronmentduetoﬁxedRFtransmitters,anelectromagneticsitesurveyshouldbeconsidered.Ifthemeasuredﬁeldstrengthinthelocationin

whichtheSBM50isusedexceedstheapplicableRFcompliancelevelabove,theSBM50shouldbeobservedtoverifynormaloperation.

If abnormal performance is observed, additional measures may be necessary, such as re-orienting or relocating the SBM 50.

Overthefrequencyrange150kHzto80MHz,ﬁeldstrengthsshouldbelessthan3V/m.

Table 4

For ME EQUIPMENT and ME SYSTEMS that are not LIFE-SUPPORTING

Recommended separation distances between portable and mobile RF communications equipment and the SBM 50

The SBM 50 is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the

user of the SBM 50 can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF

communicationsequipment(transmitters)andtheSBM50asrecommendedbelow,accordingtothemaximumoutputpowerofthecom-

munications equipment.

Rated maximum output

power of transmitter

(W)

Separation distance according to frequency of transmitter

(m)

150 kHz to 80 MHz

d = 1.2

80 MHz to 800 MHz

d = 1.2

800 MHz to 2.5 GHz

d = 2.3

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

Fortransmittersratedatamaximumoutputpowernotlistedabove,therecommendedseparationdistanced in meters (m) can be

determined using the equation applicable to the frequency of the transmitter, where Pisthemaximumoutputpowerratingofthetrans-

mitter in watts (W) according to the transmitter manufacturer.

NOTE 1 At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.

NOTE 2Theseguidelinesmaynotapplyinallsituations.Electromagneticpropagationisaectedbyabsorptionandreﬂectionfrom

structures, objects and people.

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User Manual - Page 77