User Manual: HotDog
TM
Veterinary Controller Page 17
Guidance and manufacturer’s declaration – electromagnetic immunity (cont’d)
The HotDog Patient Warming System is intended for use in the electromagnetic environment specified below. The customer or
the user of the HotDog Patient Warming System should assure that it is used in such an environment.
Immunity test
IEC 60601
test level
Compliance level
Electromagnetic environment
–
guidance
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
3 Vrms
150 kHz to 80 MHz
10 V/m
80 MHz to 2,5 GHz
3 V
10 V/m
Portable and mobile RF communications equipment
should be used no closer to any part of the HotDog
Veterinary Patient Warming System, including cables, than
the
recommended separation distance calculated from
the equation applicable to the frequency of the transmitter.
Recommended separation distance
80 MHz to 800 MHz
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
is the recommended separation
distance in metres (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.
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
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 HotDog Veterinary Patient Warming
System is used exceeds the applicable RF compliance level above, the HotDog Veterinary Patient Warming System should be
observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as
reorienting or relocating the HotDog Veterinary Patient Warming System.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.