EDAN iSE-301 User Manual - page 64
SE-301 Series Electrocardiograph User Manual EMC Information
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environment due to fixed RF transmitters, an electromagnetic site survey should be
considered. If the measured field strength in the location in which the Electrocardiograph
is used exceeds the applicable RF compliance level above, the Electrocardiographshould
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 3 V/m.
Recommended separation distances between portable and mobile RF communications
equipment and the EQUIPMENT or SYSTEM
Recommended separation distances between
portable and mobile RF communications equipment and electrocardiograph
The electrocardiograph is intended for use in an electromagnetic environment in which radiated
RF disturbances are controlled. The customer or the user of the electrocardiographcan help
prevent electromagnetic interference by maintaining a minimum distance between portable and
mobile RF communications equipment (transmitters) and the electrocardiograph 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
P
d
2
.
1
=
80 MHz to 800 MHz
P
d
2
.
1
=
800 MHz to 2.5
GHz
P
d
3
.
2
=
0.01
0.12 0.12 0.23
0.1
0.38 0.38 0.73
1
1.2 1.2 2.3
10
3.8 3.8 7.3
100
12 12 23
For transmitters rated at a maximum output power not listed above, the recommended
separation distance d in meters (m) can be estimated 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
affected by absorption and reflection from structures, objects and people.