Bionet Cardio7e - Page 167

V 1.31
2021. 05 167 / 171 Doc. # : BN-OP-C7
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 Cardio7e/Cardio7 is used exceeds the
applicable RF compliance level above, the Cardio7e/Cardio7 should be observed to verify normal
operation. If abnormal performance is observed, additional measures may be necessary, such as
re-orienting or relocating the Cardio7e/Cardio7.
b
Over the frequency range 150 kHz to 80 MHz, field strength should be less than 3 V/m
Recommended separation distances between
portable and mobile RF communications equipment and the Cardio7e/Cardio7
The Cardio7e/Cardio7 is intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of the Cardio7e/Cardio7 can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the Cardio7e/Cardio7 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
80 MHz to 800 MHz
800 MHz to
2,5 GHz
V1=3 Vrms
E
1
= 3 V/m
E1=3 V/m
0.01
0.12
0.12
0.23
0.1
0.37
0.37
0.74
1
1.17
1.17
2.33
10
3.69
3.69
7.38
100
11.67
11.67
23.33
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.