CDN THD2FE - Page 13

13
MANUFACTURER’S DECLARATION
ELECTROMAGNETIC IMMUNITY
The THD2FE is intended for use in the electromagnetic environment (for
home healthcare) specied below. The customer or the user of the THD2FE
should assure that it is used in such an environment.
Immunity Test
IEC 60601
Test Level Compliance Level
Electromagnetic Environment
– Guidance
(for home healthcare environment)
Radiated RF
IEC 61000-4-3
10 V/m
80 MHz – 2,7 GHz
80 % AM at 1 kHz
10 V/m
80 MHz – 2,7 GHz
80 % AM at 1 kHz
Recommended separation
distance:
d = 1,2 √P
d = 1,2 √P 80MHz to 800 MHz
d = 2,3 √P 800MHz to 2,7 GHz
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 xed RF
transmitters, as determined
by an electromagnetic 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 reection from structures, objects and people.
Field strengths from xed 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 xed RF transmitters, an electromagnetic site survey should be considered. If the measured
eld strength in the location in which the THD2FE is used exceeds the applicable RF compliance
level above, the THD2FE should be observed to verify normal operation. If abnormal performance
is observed, additional measures may be necessary, such as re-orienting or relocating the
THD2FE.