Cordis MOBISERV FP7 248434, Manual, Page: 37 / 42

D5.4: Multi-sensor system integrated into wearable fabrics 37/42
MOBISERV FP7 248434
IMMUNITY test
IEC 60601
test level Compliance
level
Electromagnetic environment
– guidance
Radiated RF
IEC 61000-4-3
3 V/m
80 MHz to 2.5 GHz 3 V/m From 80MHz and 800MHz
From 800MHz and 2.7MHz
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 survey
(a)
,
should be less than the
compliance level in each
frequency range.
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 location in which
the MOBISERV data logger is used exceeds the applicable RF compliance level above, the
MOBISERV data logger should be observed to verify normal operation. If abnormal performance is
observed, additional measures may be necessary, such as re-orienting or relocating the MOBISERV
data logger.
7.4 Recommended separation distances
The MOBISERV data logger is intended for use in an electromagnetic environment in which
radiated RF disturbances are controlled. The customer or the user of the MOBISERV data
logger can help prevent electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and the
MOBISERV data logger as recommended below, according to the maximum output power of
the communications equipment