MN009-940-S0 EN
BOWA SHE SHA smoke evacuation unit
21
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 structure, objects and people.
Recommended Separation Distance Between Portable and Mobile RF Communications
Equipment and the Model @ 3 Vrms
The model SHE SHA is intended for use in the electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of the model SHE SHA can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the model SHE SHA 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
d
= 3.5
√P
v
1
80 kHz to 800 MHz
d
= 3.5
√P
E
1
800 kHz to 2.5 GHz
d
= 7
√P
E
1
0.01
0.12
0.12
0.23
0.1
0.34
0.34
0.74
1
1.7
1.7
2.3
10
3.7
3.7
7.4
100
11.7
11.7
23.3
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 rating of the transmitter in watts (W) according to the
transmitter manufacturer.
