iHealth Wireless Blood Pressure Monitor - Manual (Page 17)

17
portable and mobile RF communications equipment and the Wireless Blood
Pressure Monitor
The Wireless Blood Pressure Monitor is intended for use in an electromagnetic
environment in which radiated RF disturbances are controlled. The customer
or the user of the Wireless Blood Pressure Monitor can help prevent
electromagnetic interference by maintaining a minimum distance between
portable and mobile RF communications equipment (transmitters) and the MONITOR
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 determined 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.