User Manual: HotDog
TM
Patient Warming System Controller
Page 22
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 Patient Warming System, including
cables, than the recommended separation
distance calculated from the equation applicable
to the frequency of the transmitter.
Recommended separation distance
P
2
,
1
d
80 MHz to 800 MHz
P
35
,
0
d
800 MHz to 2,5 GHz
P
7
,
0
d
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 Patient Warming System is
used exceeds the applicable RF compliance level above, the HotDog 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 Patient Warming System.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
