Beurer FT90 - Page 25

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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 mea-
sured field strength in the location in which
the FT90 is used exceeds the applicable RF compliance level above, the FT90 should be
observed to verify normal operation. If abnormal performance is observed, additional measures
may be necessary, such as reorienting or relocating the FT90.
b. Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Table 3
Guidance and manufacturer’s declaration – electromagnetic immunity
The FT90 is intended for use in the electromagnetic environment specified below. The customer
or the user of the FT90 should assure that it is used in such an environment.
Immunity test IEC 60601 test
level
Compliance
level
Electromagnetic environment –
guidance
Electrostatic
discharge (ESD)
IEC 61000-4-2
6 kV contact
8 kV air
6 kV contact
8 kV air
Floors should be wood, concrete
or ceramic tile. If floors are covered
with synthetic material, the relative
humidity should be at least 30 %.
Electrical fast tran-
sient/burst
IEC 61000-4-4
2 kV for power
supply lines
1 kV for input/ output
lines
Not applicable Mains power quality should be that
of a typical commercial or hospital
environment.
Surge
IEC 61000-4-5
1 kV line(s) to line(s)
2 kV line(s) to earth
Not applicable Mains power quality should be that
of a typical commercial or hospital
environment.