Harvest Healthcare WOBURN COMMUNITY 1200, Общее руководство пользователя и инструкции по безопасности

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EMC STATEMENT
Field strengths from fixed transmitters, such as base stations of mobile telephones and land mobile radios,
amateur radio, AM and FM radio and TV broadcast can not be predicted theoretically with accuracy. To
assess the electromagnetic environment due to fixed RF transmitters, an electromagnetic site survey is
recommended. If the field strength at the location of the care bed exceeds the specified compliance level
above, then the care bed should be monitored with respect to its normal operation. If abnormal performance
is observed, it may be necessary to take additional measures, such as reorienting or relocating the care bed.
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
a.
b.
Recommended working clearances between portable and mobile RF communications
equipment and the care bed
The care bed is intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The customer or user of the care bed can help to prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile RF.
800 MHz to 2.5 GHz at
3 V/m
For transmitters not rated in the list above, the working clearance can be determined using the equation,
which belongs to the transmitter, where P is the nominal output of the transmitter in watts (W) according to
specifications of the transmitter manufacturer.
NOTE 1: An additional factor of 10/3 is applied when calculating the recommended working clearance between
transmitters in the 80 MHz to 2.5 GHz frequency range in order to reduce the probability that a mobile/portable
communication device unintentionally brought into the patient area could lead to interference.
NOTE 2: These guidelines may not apply in all situations. Propagation of electromagnetic waves is affected by
absorption and reflection from structures, objects and persons.
80 MHz to 800 MHz at
3 V/m
150 kHz to 80 MHz at
3 V/m
0.23 0.12 0.12 0.01
0.73 0.38 0.38 0.1
2.3 1.2 1.2 1
7.3 3.8 3.8 10
23 12 12 100
P
E
d ]
5 , 3
[
1
=
P
E
d ]
7
[
1
=
P
V
d ]
5 , 3
[
1
=
OUTPUT POWER OF
TRANSMITTER - W
WORKING CLEARANCE ACCORDING TO TRANSMISSION
FREQUENCY - M
All parts and data continually undergo further development and may
therefore deviate from the details given.