FujiFilm SonoSite M-Turbo User Manual page 124

Guidance and Manufacturer's Declaration - Electromagnetic Immunity (Continued)
The M-Turbo ultrasound system is intended for use in the electromagnetic environment specified
below. The customer or the user of the M-Turbo ultrasound system should assure that it is used in
such an environment.
Immunity Test
Radiated RF
IEC 61000-4-3
Note: U is the AC mains voltage prior to application of the test level.
T
At 80 MHz and 800 MHz, the higher frequency range applies.
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 SonoSite ultrasound system is used exceeds the
applicable RF compliance level above, the SonoSite ultrasound system should be observed to verify normal operation. If
abnormal performance is observed, additional measures may be necessary, such as re-orienting or relocating the
SonoSite ultrasound system.
b. Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
112
IEC 60601 Test Level
3 Vim
80 MHz to 2.5 GHz
Electromagnetic
Compliance Level
Environment
3 V/m
d = 1.2
80 MHz to 800 MHz
d = 2.3
800 MHz to 2,5 GHz
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
the compliance level in each
frequency range
Interference may occur in the
vicinity of equipment marked
with the following symbol:
P
P
a
, should be less than
b .