Stephan EVETR, Instructions For Use Manual, Page: 238 / 254

12 Electromagnetic emissions and immunity
238 GA-070T-0518V2.7-HAO-EN

Fritz Stephan GmbH
Immunity test IEC60601 test
level Compliance level Electromagnetic environment
guideline
Radiated RF
IEC 61000-4-3
(without docking
station)
Without docking station
20 V/m
80 MHz to 2.5 GHz
20 V/m
P d 2 , 1

for 800 MHz to 2.5 GHz
where P is the maximum output power
rating of the transmitter in watts (W)
according to the transmitter
manufacturer and d the recommended
separation distance in meters (m).
b
Field strengths from fixed RF
transmitters, as determined by an
electromagnetic site survey,
c
should be
less than the compliance level in each
frequency range.
d
Interference may occur in the vicinity of
equipment marked with the following
symbol.
At 80 MHz and 800 MHz, the higher frequency range applies.
These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and
reflection from structures, objects, and people.
a 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.
b 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 in these frequency
ranges.
c
Field strengths from fixed transmitters, such as base stations for mobile telephones, mobile terrestrial radio
equipment, amateur radio stations, AM and FM radio stations, and TV stations cannot theoretically be
predicted 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
EVE
ventilator is used exceeds the compliance levels above, the
EVE
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
EVE
ventilator.
d
Over the frequency range 150 kHz to 80 MHz, field strength is less than 10 V/m.