Appendix
35
Immunity test
Test level for
professional
healthcare facility
environments
Compliance level
Electromagnetic environment -
Guidance
Portable and mobile RF
communications equipment
should be used no closer to any
part of the RadiForce series,
including cables, than the
recommended separation
distance calculated from the
equation applicable to the
frequency of the transmitter.
Recommended separation
distance
Conducted
disturbances induced
by RF fields
IEC / EN61000-4-6
3 Vrms
150 kHz to 80 MHz
3 Vrms
d = 1.2√P
6 Vrms
ISM bands between
150 kHz and 80 MHz
6 Vrms
Radiated RF fields
IEC / EN61000-4-3
3 V/m
80 MHz – 2.7 GHz
3 V/m
d = 1.2√P, 80 MHz – 800 MHz
d = 2.3√P, 800 MHz – 2.7 GHz
Where "P" is the maximum
output power rating of the
transmitter in watts (W)
according to the transmitter
manufacturer and "d" is the
recommended separation
distance in meters (m). Field
strengths from fixed RF
transmitters, as determined by an
electromagnetic site survey
*1
,
should be less than the
compliance level in each
frequency range
*2
.
Interference may occur in the
vicinity of equipment marked with
the following symbol.
Note
• U
T
is the a.c. mains voltage prior to application of the test level.
• At 80 MHz and 800 MHz, the higher frequency range applies.
• Guidelines regarding conducted disturbances induced by RF fields or radiated RF fields may not
apply in all situations. Electromagnetic propagation is affected by absorption and reflection from
structures, objects and people.
• The ISM 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.
*1
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 RadiForce series is used exceeds the applicable RF
compliance level above, the RadiForce series should be observed to verify normal operation. If
