T
echnical manual OT-600-060/1
Page 21
Guidance and manufacturer’s declaration - electromagnetic immunity
The OT600 warming system is intended for use in the electromagnetic environment specified below. The customer or the
user of the OT600 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
3 V/m
80 MHz to 2,5 GHz
3 Vrms
3 V/m
Portable and mobile RF communications
equipment should be used no closer to any
part of the OT600 system, including
cables, than the recommended separation
distance calculated from the equation
applicable to the frequency of the
transmitter.
Recommended separation distance
d =
1,17
√
P
d =
1,17
√
P
80 MHz to 800 MHz
d =
2,33
√
P
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*, 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.
* 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
access 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 OT600 is used exceeds the applicable RF compliance level above, the
OT600 system should be observed to verify normal operation. If abnormal performance is observed, additional measures
may be necessary, such as reorienting or relocating the OT600.
** Over the frequency range of 150 kHz to 80 MHz, field strength should be less than 3 V/m.
