WatchPAT
™
ONE System
47
Operation Manual
Table 4 - from IEC 60601-1-2:2014
Radiated RF
IEC 61000-4-3
10 V/m
80 MHz to 2,7 GHz
10 V/m
d
= 1.2
√
P 80 M Hz t o 800 MHz
d=
2.3
√
P 800 MHz t o 2,7 GHz
where
P
i s the maximum output power rating of
the
transmitter in watts (W)according to the transmitter
manufacturer and
d
i s the recommended
separation
Distance in meters (m).
Field strengths from fixed R F transmitters, as
determined by an electromagnetic site survey ,
a
should be less than the compliance level in each
frequency
range .
b
Interference may occur in the vicinity of equipment
marked with the following symbol:
NOTE 1 At 80 MHz and 800 MHz, 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.
a.
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
WatchPAT
is used exceeds the applicable RF
compliance level above, the
WatchPAT
should be observed to verify normal operation. If abnormal performance is
observed, additional measures may be necessary, such as re-orienting or relocating the
WatchPAT
.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 10 V/m.