Important safety considerations
Vscan Extend – User Manual 2-17
5721203-100 Rev. D
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
ultrasound unit is used exceeds the applicable RF compliance level above, the ultrasound unit should be
observed to verify normal operation. If abnormal performance is observed, additional measures may be
necessary, such as re-orienting or relocating the ultrasound unit.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Table 2-3: Electromagnetic immunity (Part 2) (Continued)
Guidance and manufacturer’s declaration – electromagnetic immunity – for all medical
electrical equipment and medical electrical systems that not life-supporting
The Vscan Extend is intended for use in the electromagnetic environment below. The
customer or the user of the Vscan Extend should assure that it is used in such an
environment.
Immunity test
IEC 60601 test
level
Complianc
e level
Electromagnetic
environment – guidance
c
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