Nuvo invu User Manual page 81

Conducted immunity to disturbances induced by radio frequency field
Immunity IEC 60601 Test Level
Test
IEC 61000-4-3 Frequency
range:
Field
strength:
a 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.
b 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 [ME EQUIPMENT or ME SYSTEM] is used exceeds the applicable RF compliance level above, the [ME EQUIPMENT or
ME SYSTEM] should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary,
such as re-orienting or relocating the [ME EQUIPMENT or ME SYSTEM].
c Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
NV-UMLS-0001
Compliance Level
80–2700 Frequency
MHz range:
10 V/m Field
strength:
Invu by Nuvo™User Manual
Electromagnetic
Environment Guidance
d=0.58 √��
80–2700
MHz d=1.2 √��
d=1.2 √�� 80 MHz to 800
10 V/m
MHz
d=2.3 √�� 800 MHz to 2.5
MHz
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
b
survey , should be less than
the compliance level in each
frequency range
Interference may occur in
the vicinity of equipment
marked with the following
symbol:
Appendices
a
.
c
75