ECGMAC EM-301, Руководство пользователя

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62
P
E
d
⎥⎦
⎤
⎢⎣
⎡
=
1
5 . 3
80MHz-800MHz
P
E
d
⎥⎦
⎤
⎢⎣
⎡
=
1
7
800MHz-2.5GHz
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 metres
(m).Field strengths from fixed RF
transmitters, as determined by an
electromagnetic site survey, should be less
than the compliance level in each frequency
range.
Interference may occur in the vicinity of
equipment marked with the following symbol:
Note 1: At 80 MHz and 800 MHz, the higher frequency range applies.
Note 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects, and people.
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
electromagnetic site survey should be considered. If the measured field strength in the location in which
EM-301
、 EM-601 electrocardiograph is used exceeds the applicable RF compliance level above, the
electrocardiograph should be observed to verify normal operation. If abnormal performance is observed,
additional measures may be necessary, such as reorienting or relocating the electrocardiograph.
B Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 1 V/m.
Recommended separation distances between portable and mobile RF communications equipment and equipments
or systems
-
For non-life-support equipment and system
Recommended separation distances between portable and mobile RF communications equipment and
EM-301
、 EM-601 electrocardiograph
EM-301
、
EM-601 electrocardiograph s intended for use in an electromagnetic environment in which
radiated RF disturbances are controlled. The customer or user of EM-301
、
EM-601 electrocardiograph can
help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile
RF communications equipment (transmitters) and EM-301
、
EM-601 electrocardiograph h as recommended
below, according to the maximum output power of the communications equipment.
Rated max. output power of
Separation distance according to frequency of transmitter (m)