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Chapter 9: Technical Reference

NOTE 2: These guidelines may not apply in all situations. Electromagnetic propagation is aected by adsorption

and reection from structures, objects and people.

a. Field strengths from xed transmitters such as base stations for radio, cellular/cordless telephones

and land mobile radios, amateur radios, AM and FM radio broadcasts and TV broadcasts cannot be

predicted theoretically with accuracy. To assess the electromagnetic environment due to xed RF

transmitters, an electromagnetic site survey should be considered. If the measured eld strength in

the location in which the BiliSoft Phototherapy unit is used exceeds the applicable RF compliance

level above, the BiliSoft Phototherapy unit should be observed to verify normal operation. If

abnormal performance is observed, additional measures may be necessary, such as reorienting or

relocating the BiliSoft Phototherapy unit.

b. Over the frequency range 150 KHz to 80 MHz eld strengths should be less than 3 V/m.

Table 3

Recommended separation distance between portable and mobile RF communications equipment and

the BiliSoft Phototherapy System

The BiliSoft Phototherapy System is intended for use in an electromagnetic environment in which radiated

RF disturbances are controlled. The customer or the user of the BiliSoft Phototherapy System can help

prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF

communica¬tions equipment (transmitters) and the BiliSoft Phototherapy System as recommended below,

according to the maximum output power of the communications equipment.

Rated maximum output

power of transmitter W

Separation distance according to frequency of transmitter m

150 kHz to 80 MHZ 80 MHz to 800 MHz 800 MHz to 2.5 GHz

0.01 0.12 0.12 0.23

0.1 0.38 0.38 0.73

1.0 1.2 1.2 2.3

10.0 3.8 3.8 7.3

100.0 12.0 12.0 23.0

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 transmitter 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 reection from structures, objects and people.

GE BiliSoft Service Manual

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