31
Electromagnetic immunity – Ultravision Generator
The Ultravision generator is intended for use in the electromagnetic environment of a a professional healthcare facility. The
customer or the user of the Ultravision generator should assure that it is used in such an environment.
I
MMUNITY
test
IEC 60601-1-2
TEST
LEVEL
Compliance
level
Electromagnetic environment
–
guidance
Conduct-
ed RF
IEC 61000-
4-6
Radiated
RF IEC
61000-4-3
Inclu
ding
immunity to
RF wireless
comms
equipment
3 V
rms
150 kHz to 80 MHz
6 V in ISM bands
between 0,15 MHz
and
80 MHz
80 % AM at 1 kHz
3 V/m
80 MHz to 2.7 GHz
80% AM at 1kHz
3V
6V
3V/m
Portable and mobile RF communications equipment should be used
no closer to any part of the Ultravision generator, including cables,
than the recommended separation distance calculated from the
equation applicable to the frequency of the transmitter.
Recommended separation distance
80MHz to
800MHz
800MHz
to 2.7GHz
where
P
is the maximum output power rating of the transmitter in watts
(W) according to the transmitter manufacturer and
d
is the recom-
mended separation distance in metres (m).
Field strengths from fixed RF transmitters, as determined by an elec-
tromagnetic 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
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 lo-
cation in which the Ultravision generator is used exceeds the applicable RF compliance level above, the Ultravision generator should be
observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as re-orienting
or relocating the Ultravision generator.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Recommended separation distances between portable and mobile RF communications equipment and the Ultravi-
sion Generator
The Ultravision generator is intended for use in an electromagnetic environment in which radiated RF disturbances are con-
trolled. The customer or the user of the Ultravision generator can help prevent electromagnetic interference by maintaining a
minimum distance between portable and mobile RF communications equipment (transmitters) and the
Ultravision generator as recommended below, according to the maximum output power of the communications equipment.
Rated maximum output
power of transmitter
W
Separation distance according to frequency of transmitter
m
150 kHZ to 80 MHz
80 MHz to 800 MHz
800 MHz to 2.7 GHz
0.01
0.12
0.12
0.23
0.1
0.37
0.37
0.74
1
1.17
1.17
2.33
10
3.68
3.68
7.37
100
11.66
11.66
23.33