Q9 Digital Color Doppler Ultrasound System
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3 Guidance and manufacturer’s declaration – electromagnetic immunity
The Q9 is intended for use in the electromagnetic environment specified below. The customer or the
user of the Q9 should assure that it is used in such an environment.
3.1. Immunity
Test
IEC 60601 test
level
IEC 60601 test
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 Q9, including cables, than the
recommended separation distance
calculated from the equation applicable to
the frequency of the transmitter.
Recommended separation distance
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 Q9 is used exceeds the applicable RF compliance level above, the Q9 should
be observed to verify normal operation. If abnormal performance is observed, additional measures may
be necessary, such as reorienting or relocating the Q9.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Recommended separation distances between