GE Giraffe, Руководство по обслуживанию

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Appendix B: Electromagnetic Compatibility
International Electronic Commission (IEC) Guidance and Manufacturer’s Declaration Regarding Electronic Immunity
Service Manual B-3
B.4 International Electronic Commission (IEC) Guidance and Manufacturer’s
Declaration Regarding Electronic Immunity
The Giraffe/Panda Warmer is intended for use in the electronic environent specified below. The user of the
Giraffe/Panda Warmer should ensure that it is used in such an environment.
Note 1: Portable and mobile equipment can affect medical electronic equipment.
Note 2: At 80 MHz and 800 MHz, the higher frequency range applies. These guidelines may not apply in all
situations.
Electromagnetic Immunity
Immunity Test
IEC 60601 Test
Level
Compliance Level Electromagnetic Environment Guidance
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
IEC 60601-2-21 3 Vrms
150 KHz to 80 MHz
3 V/m
80 MHz to 2.5 GHz
3 V/m
26 MHz to 1 GHz
10 V/m
26 MHz to 1 GHz 3V
3 V/m
3 V/m
normal operation
10 V/m
no hazard
Portable and mobile RF communications
equipment should be used no closer to any
part of the Giraffe/Panda Warmer,
including cables, than the recommended
separation distance calculated from the
equation applicable for the frequency of
the transmitter.
Recommended Separation Distance
d = 1.2 √ P
Radiated RF can affect the accuracy of in-
bed-scale readings. However, the in-bed-
scale is not critical to the performance of
the Giraffe/Panda Warmer unit. (Refer to
“NOTE 1” on
page B-3 .)
d = 1.2 √ P= 26 MHz to 800 MHz
d = 2.3 √ P= 800 MHz to 2.5 GHz
where P is the maximum output power
rating of the transmitter in watts (W)
according to the transmitter manufacturer
and d is the recommended separation
distance in meters (m).
Field strengths for fixed RF transmitters as
determined by an electromagnetic site
survey (refer to “NOTE a” on
page B-4 )
should be less than the compliance level in
each frequency range (refer to “NOTE b” on
page B-4 ).
Interference may occur in the vicinity of
equipment. Marked with the following
symbol: