Mach Power HC-AED7000 Manual Del Usuario página 33

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 AED7000 is used exceeds the applicable RF compliance level above,
the AED 7000 should be observed to verify normal operation. If abnormal performance is observed,
additional measures may be necessary, such as reorienting or relocating the AED 7000.
d. Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3V/m.
7.6.4 Recommended separation distances between portable and mobile RF communications
equipment and the AED7000 (IEC 60601-1-2 Table 205)
The AED7000 is intended for use in an environment in which radiated RF disturbances are control-
led. The customer or the user of the AED7000 can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) mad the AED7000 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.
At 80 MHz and 800 MHz, the separation distance for the higher frequency range ap-
plies.
The ISM (industrial, scientific and medical) bands between 150 kHz and 80 MHz are
6.765 MHz to 6.795 MHz; 13.553 MHz to 13.567 MHz; 26.957 MHz to 27.283 MHz; and 40.66
MHz to 40.70 MHz.
An additional factor of 10/3 is used in calculating the recommended separation distan-
ce for transmitters in the ISM frequency bands between 150 kHz and 80 MHz and in
the frequency range 80 MHz to 2.5 GHz to decrease the likelihood that mobile/portable
communications equipment could cause interference if it is inadvertently brought into
patient areas
These guidelines may not apply in all situations. Electromagnetic propagation is af-
fected by absorption and reflection from structures, objects and people
Separation distance according to frequency of transmitter m
80MHz a 800MHz
d= 0.6 • √P
0.115
0.364
1.15
3.637
11.5
80MHz a 2.5GHz
d= 1.15 • √P
0.115
0.364
1.15
3.637
11.5
33