Emc Precautions - TensCare TouchTENS XL-Y1 Instructions For Use Manual

21. EMC PRECAUTIONS

Use special precautions regarding EMC according to the
information provided below.
Other portable and mobile RF communications equipment can
affect performance. Do not use when adjacent to or stacked with
other electrical equipment. Use of leads or probes other than
those listed in section 18 may affect EMC performance.
Guidance and manufacturer's declaration - electromagnetic
emissions
The Touch TENS is intended for use in the electromagnetic
environment specified below.
The customer or the user of the Touch TENS should assure that it is
used in such an environment.
Emissions test Compliance
RF emissions Group 1
CISPR 11
RF emissions Class B
CISPR 11
Harmonic emissions Not applicable
IEC61000-3-2
Voltage fluctuations/ flicker Not applicable
emissions IEC 61000-3-3
Electromagnatic environment - guidance
The model itouch uses RF energy only for its
internal function. Therefore, its RF emissions
are very low and are not likely to cause any
interference in nearby electronic equipment
The model itouch is suitable for used in
domestic establishment and in establishment
directly connected to a low voltage power
supply network which supplies buildings used
for domestic purposes.
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The Touch TENS is intended for use in the electromagnetic
environment specified below. The customer or the user of the
Touch TENS should assure that it is used in such an environment.
Immunity IEC 60601 test Compliance
test level level
Conducted 3 Vrms 3 Vrms
RF 150 kHz to 80
IEC 61000- MHz
4-6
Radiated RF 3 V/m 3 V/m
IEC 61000-4 80 MHz to 2,5
-3 GHz
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 itouch is used
exceeds the applicable RF compliance level above, the model itouch should be observed
to verify normal operation. If abnormal performance is observed, additional measures may
be necessary, such as re-orienting or relocating the model itouch.
b.Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Electromagnetic environment – guidance
Portable and mobile RF communications
equipment should be used no closer to any
part of the model itouch, including cables,
than the recommended separation distance
calculated from the equation applicable to
the frequency of the transmitter
Recommended separation distance 3V
d = 1.2√ P 80M Hz to 800MHz
d = 2.3√ pt P 800MHz to 2.5GHz
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 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 symbol on the
left of this box
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