78
SPIRO PD 2.0 User Manual
Immunity test IEC 60601 Compliance level Electromagnetic environment -
test level guidance
Field strengths from fixed RF
transmitters, as determined by
an electromagnetic site survey,
a should be less than the
compliance level in each
frequency range.
b
Interference may occur in the
vicinity of equipment marked
with the following symbol:
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 structures, objects and people.
a 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.
b The compliance levels in the ISM frequency bands between 150 kHz and 80 MHz and in the frequency range 80 MHz to 2,5
GHz are intended to decrease the likelihood that mobile/portable communications equipment could cause interference if
it is inadvertently brought into patient areas. For this reason, an additional factor of 10/3 has been incorporated into the
formulae used in calculating the recommended separation distance for transmitters in these frequency ranges.
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 Spiro PD is used exceeds the applicable RF compliance level above,
the Spiro PD should be observed to verify normal operation. If abnormal performance is observed, additional measures
may be necessary, such as re-orienting or relocating the Spiro PD.
d Over the frequency range 150 kHz to 80 MHz, field strengths should be less than [V1] V/m.