Mindray BeneHeart D3, Operator'S Manual

Page: 162 / 186

B-4
a The ISM (industrial, scientific, and medical) bands between 150 kHz and 80 MHz are 6.765 MHz to 6.795 MHz; 13.553 MHz to
13.567 MHz; 26.957 MHz to 27.283 MHz; and 40.66 MHz to 40.70 MHz.
b Compliance level in the ISM frequency bands between 150 kHz to 80 MHz and in the frequency range 80 MHz to 2.5 GHz
are intended to decrease the likelihood that portable/ mobile communication equipment could cause interference if it is
inadvertently brought into patient areas. For this reason, an additional factor of 10/3 is used in calculating the recommended
separation distance for transmitters in these frequency ranges.
c 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 the device is used exceeds the applicable RF compliance level above,
the device should be observed to verify normal operation. If abnormal performance is observed, additional measures may be
necessary, such as reorienting or relocating the device.
d Over the frequency ranges 150 kHz to 80 MHz beyond ISM band, field strengths should be less than 3V/m; within ISM band,
field strengths should be less than 10V/m.
Recommended Separation Distances between Portable and Mobile RF, Communications Equipment and This
Equipment
The equipment is intended for use in an electromagnetic environment in which radiated RF disturbance are controlled. The
customer or the user of the equipment can help prevent electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and the equipment as recommended below,
according to the maximum output power of the communication equipment.
Separation Distance According to Frequency of Transmitter (m) Rated Maximum
Output power of
Transmitter Watts
(W)
150 kHz to 80 MHz
outside ISM bands
P
V
d
⎥⎦
⎤
⎢⎣
⎡
=
1
5 . 3
150 kHz to 80 MHz in
ISM bands
P
V
d
⎥⎦
⎤
⎢⎣
⎡
=
2
12
80 MHz to 800 MHz
P
E
d
⎥⎦
⎤
⎢⎣
⎡
=
1
12
800 MHz to 2.5 GHz
P
E
d
⎥⎦
⎤
⎢⎣
⎡
=
1
23
0.01 0.12 0.12 0.12 0.23
0.1 0.37 0.38 0.38 0.73
1 1.20 1.20 1.20 2.30
10 3.70 3.80 3.80 7.30
100 12.00 12.00 12.00 23.00
For transmitters at a maximum output power not listed above, the recommended separation distanced 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 higher frequency range applies.
Note 2: The ISM (industrial, scientific, and medical) bands between 150 kHz and 80 MHz are 6.765 MHz to 6.795 MHz; 13.553
MHz to 13.567 MHz; 26.957 MHz to 27.283 MHz; and 40.66 MHz to 40.70 MHz.
Note 3: An additional factor of 10/3 is used in calculating the recommended separation distance for transmitters in the ISM
frequency bands between 150 kHz to 80 MHz and in the frequency range 80 MHz to 2.5 GHz to decrease the likelihood that
portable/ mobile communication equipment could cause interference if it is inadvertently brought into patient areas.
Note 4: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection
from structures, objects and people.