WatchPAT™300 System
60
Operation Manual
Recommended Separation Distances
The WP300
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 WP300,
according to the maximum output power of the equipment, as recommended in the table below.
Table 6 - from IEC 60601-1-2:2014
Recommended separation distances between
portable and mobile RF communications equipment and the WP300
Rated maximum output
power of transmitter
Watts [W]
Separation distance according to frequency of transmitter (in
meters)
Meters [m]
150kHz to 80MHz
outside ISM Bands
d
= 1.17
√
P
150kHz to 80MHz
inside ISM Bands
d
= 2
√
P
80MHz to 800MHz
d
= 1.2
√
P
800MHz to 2.7GHz
d=
2.3
√
P
0.01
0.12
0.2
0.12
0.23
0.1
0.37
0.63
0.37
0.73
1
1.17
2.0
1.17
2.3
10
3.7
6.32
3.7
7.3
100
11.7
20
11.7
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.
