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Itamar Medical Ltd.
Recommended Separation Distances
The WatchPAT is intended for use in an electromagnetic environment in which radiated
radiofrequency disturbances are controlled.
The user and/or installer of the unit can help prevent electromagnetic interference
by maintaining a minimum distance between portable and mobile radiofrequency
communications equipment (emitters) and the WatchPAT, according to the maximum output
power of the equipment, as recommended in the table below.
Precaution: To help prevent adverse events, one should follow the recommended separation
distances between RF communications equipment and the WatchPAT.
Rated
maximum
output
power of
150kHz to 80MHz
transmitter
outside ISM Bands
Watts [W]
d = 1.17√P
0.01
0.1
1
10
100
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 powerrating 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.
WatchPAT™ONE System
TABLE 4 - FROM IEC 60601-1-2:2014
Recommended separation distances between
portable and mobile RF communications equipment and the WatchPAT
Separation distance according to frequency of transmitter
150kHz to 80MHz
inside ISM Bands
d = 2√P
0.12
0.37
1.17
3.7
11.7
(in meters)
Meters [m]
80MHz to
800MHz
d = 1.2√P
0.2
0.12
0.63
0.37
2.0
1.17
6.32
3.7
20
11.7
64
800MHz to
2.7GHz
d = 2.3√P
0.23
0.73
2.3
7.3
23
Operation Manual
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