Guidance and manufacturer’s declaration – electromagnetic immunity
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) tele-
phones 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 ET-9090/ET-1313/ET-7070 is used exceeds the applicable RFcompliance
level above, the ET-9090/ET-1313/ET-7070 should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such as re-orienting or relocating
the ET-9090/ET-1313/ET-7070.
b.) Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
The ET-9090/ET-1313/ET-7070 is intended for use in the electromagnetic environ-
ment specified below. The customer or the user of the ET-9090/ET-1313/ET-7070
should assure that it is used in such an environment.
Immunity test
Conducted RF IEC
61000-4-6
Conducted RF IEC
61000-4-6
Compliance level
3 Vrms
3 Vrms
IEC 60601
test level
3 Vrms
150 kHz
to 80 MHz
3 Vrms
150 kHz
to 80 MHz
Electromagnetic environment
— guidance
Portable and mobile RF communi-
cations equipment should be used
no closer to any part of the
ET-9090/ET-1313/ET-7070, including
cables, than the recommended sep-
aration distance calculated from the
equation applicable to the frequency
of the transmitter. Recommended
separation distance
Where P is the maximum output
power rating of the transmitter in
watts (W) according to the trans-
mitter 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.
Interference may occur in the vicinity
of equipment marked with the
following symbol:
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