NOTE 1 At 80MHz and 800MHz, 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.
a. The ISM (industrial, scientific and medical) bands between 150kHz and 80MHz
are 6.765MHz to 6.795MHz; 13.553MHz to 13.567MHz; 26.957MHz to 27.283 MHz;
and 40.66MHz to 40.70MHz.
b. An additional factor of 10/3 is used in calculating the recommended separation
distance for transmitters in the ISM frequency bands between 150kHz and 80MHz
and in the frequency range 80MHz to 2.5GHz to decrease the likelihood that
mobile/portable communications equipment could cause interference if it is
inadvertently brought into patient area.
c. 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 HeartPlus™ is used exceeds the applicable RF compliance
level above, the HeartPlus™ should be observed to verify normal operation. If
abnormal performance is observed, additional measures may be necessary, such as
re-orienting or relocating the HeartPlus™.
3) Recommended separation distances between portable and mobile RF
communications equipment and the HeartPlus™ defibrillator.
The HeartPlus™ is intended for use in an electromagnetic environment in which
radiated RF disturbances are controlled. The customer or the user of the
To Next Page
Loading...
