Saadat Dena 640 User Manual page 79

Portable and mobile RF communications equipment and the Electrocardiograph
The Dena Electrocardiograph is intended for use in the electromagnetic environment in which
radiated RF disturbances are controlled. The customer or the user of the Dena can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the Dena as recommended below, according to the
maximum output power of the communications equipment.
Rated maximum
output power of
transmitter
W
0.01
0.1
1
10
100
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.
Recommended separation distances between
Separation distance according to frequency of transmitter
150 kHz to 80 MHz
P
d = 1.17
0.12
0.37
1.17
3.70
11.7
m
80 MHz to 800 MHz
P
d = 1.17
0.12
0.37
1.17
3.70
11.7
11
800 MHz to 2.5 GHz
P
d = 2.33
0.23
0.74
2.33
7.37
23.3