Treaton MV200, User Manual

Page: 198 / 222

Appendix 3 Electromagnetic environment
App.3-2
Immunity test IEC 60601 test level Compliance level
Electromagnetic
environment – guidance
Power frequency
(50/60 Hz)
magnetic field
IEC 61000-4-8:2009 3 A/m 3 A/m Power frequency magnetic
fields should be at levels cha-
racteristic of a typical location
in a typical commercial or hos-
pital environment.
N o te . U
T
is th e a .c . m a ins v o l ta g e pr i or to a pp l ic at i on of t he t es t l ev e l .
Conducted RF
IEC 61000-4-6:2008 3 Vrms
150 kHz to 80 MHz
Outside industrial,
scientific and medical
(ISM) bands
1)
10 Vrms
150 kHz to 80 MHz
in ISM bands
1)
3 V
10 V
Portable and mobile RF com-
munications equipment should
be used no closer to any part
of the ventilator, including
cables, than the recommended
separation distance calculated
from the equation applicable to
the frequency of the transmit-
ter.
Recommended separation
distance
d = 1.2
P
d = 1.2
P
Radiated RF
IEC 61000-4-3:2008
3 V/m
80 MHz to 2.5 GHz
3 V/m
d = 1.2
P
(80 to 800 MHz);
d = 2.3
P
(800 MHz to 2.5 GHz),
where
P is the maximum out-
put power rating of the
transmitter in watts (W) accord-
ing to the transmitter
manufacturer and
d is the rec-
ommended separation dis-
tance in metres (m).
Field strengths from fixed RF
transmitters, as determined by
an electromagnetic site sur-
vey,
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 mo-
bile radios, amateur radio, AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with ac-
curacy. 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 ventilator is used exceeds the appli-
cable RF compliance level above, the ventilator should be observed to verify normal operation. If abnormal perfor-
mance is observed, additional measures may be necessary, such as re-orienting or relocating the ventilator.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.