Advantech HIT-W121, User Manual, Page: 28 / 28

Information on potential electromagnetic interference and advice on
how to avoid or minimize such interference (IEC/EN 60601-1-2:2007)
Guidance and manufacturer’s declaration – electromagnetic immunity
The model HIT-W121 is intended for use in the electromagnetic environment specified below. The customer or the user of
the model HIT-W121 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 model HIT-W121, including cables, than
the recommended separation distance calculated
from the equation applicable to the frequency of
the transmitter.
Recommended separation distance
d = 1,2
P
d = 1,2
P
80 MHz to 800 MHz
d = 2,3
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,
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 model HIT-W121 is used exceeds the applicable RF
compliance level above, the model HIT-W121 should be observed to verify normal operation. If abnormal performance is
observed, additional measures may be necessary, such as reorienting or relocating the model HIT-W121.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
FCC Caution: Any changes or modifications not expressly approved by the party responsible
for compliance could void the user's authority to operate this equipment.
FCC RF Radiation Exposure Statement:
1.•This Transmitter must not be co-located or operating in conjunction with any other antenna or
transmitter.
2.•This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled
environment. This equipment should be installed and operated with a minimum distance of 20
centimeters between the radiator and your body.