Fresenius Medical Care Liberty Select User Manual page 258

The Liberty Cycler is intended for use in the electromagnetic environment specified below.
The customer or the user of the Liberty Cycler should assure that it is used in such an
environment.
Immunity test
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
NOTE 1
NOTE 2
propagation is affected by absorption and reflection from structures, objects, and people.
a
b
256
Guidance and manufacturer's declaration – electromagnetic immunity
IEC 60601
test level
3 Vrms
150 kHz to
80 MHz
3 V/m
80 MHz to
2.5 GHz
At 80 MHz and 800 MHz, the higher frequency applies.
These guidelines may not apply in all situations. Electromagnetic
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 Liberty Cycler is used exceeds the applicable RF compliance
level above, the Liberty Cycler should be observed to verify normal operation. If
abnormal performance is observed, additional measures may be necessary, such as
re-orienting or relocating the Liberty Cycler.
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3
V/m.
P/N 480145 Rev A
Compliance Electromagnetic environment –
level guidance
Portable and mobile RF communications
equipment should be used no closer to
any part of the Liberty Cycler, including
cables, than the recommended
separation distance calculated from the
equation applicable to the frequency of
the transmitter.
Recommended separation distance
d = 1.2 P
d = 1.2 P 80 MHz to 800 MHz
3 Vrms
d = 2.3 P 800 MHz to 2.5 GHz
150 kHz to 80
where P is the maximum output power
MHz
rating of the transmitter in watts (W)
3 V/m
according to the transmitter manufacturer
80 MHz to 2.5
and d is the recommended separation
GHz
distance in meters (m).
Field strengths from fixed RF
transmitters, as determined by an
electromagnetic site survey,
less than the compliance level in each
frequency range.
Interference may occur in the
vicinity of equipment marked
with the following symbol:
Liberty Select Cycler User's Guide
a
should be
b