E30 Digital Electrocardiograph User’s Manual
26
Recommended separation distances between portable and mobile
RF communications equipment and the EQUIPMENT or SYSTEM –
for EQUIPMENT or SYSTEM that are not LIFE-SUPPORTING
Recommended separation distances between
portable and mobile RF communications equipment and the E30 Digital Electrocardiograph
The E30 Digital Electrocardiograph is intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of the E30 Digital Electrocardiograph can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications
equipment (transmitters) and the E30 Digital 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
V
d
⎥
⎦
⎤
⎢
⎣
⎡
=
1
5.3
80 MHz to 800 MHz
P
E
d
⎥
⎦
⎤
⎢
⎣
⎡
=
1
5.3
800 MHz to 2.5 GHz
P
E
d
⎥
⎦
⎤
⎢
⎣
⎡
=
1
7
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 metres
(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.
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