624074/07 A-45
Radiated RF
IEC 61000-
4-3
10 V/m
80 MHz to
2.5 GHz
10 V/m 80 MHz to 800 MHz
d = 1.2 √P
800 MHz to 2.5 GHz
d = 2.3 √P
where P is the maximum out-
put power rating of the trans-
mitter in watts (W) according
to the transmitter manufac-
turer and d is the recom-
mended separation distance
in meters (m).
3
Field strengths from fixed RF
transmitters, as determined by
an electromagnetic site sur-
vey
4
, should be less than the
compliance level in each fre-
quency range
5
. Interference
may occur in the vicinity of
equipment marked with the
symbol
1. UT is the AC mains voltage before application of the test level.
2. 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.
3. 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 is used in calculating the
recommended separation distance for transmitters in these frequency ranges.
4. 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 consid-
ered. If the measured field strength in the location in which the HAMILTON-G5 ventilator is
used exceeds the applicable RF compliance level above, the HAMILTON-G5 ventilator should
be observed to verify normal operation. If abnormal performance is observed, additional
measures may be necessary, such as re-orienting or relocating the HAMILTON-G5 ventilator.
5. Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 10 Vrms.
Table A-15. Guidance and manufacturer's declaration – electro-
magnetic immunity
1
Immunity
test
IEC 60601
test level
Compli-
ance level
Electromagnetic environ-
ment – guidance
To Next Page
Loading...