MediSono P12 - Page 192

Digital Color Doppler Ultrasound System
183
Basic User Manual
Electromagnetic immunity
The EQUIPME NT is intended for use in the electromagnetic environm ent specified below. The
customer or the user of the EQUIPMENT 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
±2 kV, ±4 kV, ±6
kV Contact
±2 kV, ±4 kV, ±8
kV Air
±2 kV, ±4 kV, ±6
kV Contact
±2 kV, ±4 kV, ±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
transient/burst
IEC 61000-4-4
±2 kV for power
port
±2 kV for power
port
Mains power quality should be
that of a typical commercial or
hospital environment.
Surge
IEC 61000-4-5
±1 kV line to line
±2 kV line to earth
±1 kV line to line
±2 kV line to earth
Mains power quality should be
that of a typical commercial or
hospital environment.
Voltage dips and
Short
interruptions
IEC 61000-4-11
<5 % U
T
(>95 % dip
in U
T
) for 0.5 period
40 % U
T
(60 % dip
in U
T
) for 5 periods
70 % U
T
(30 % dip
in U
T
) for 25
periods
<5 % U
T
(>95 % dip
in U
T
) for 250
periods
<5 % U
T
(>95 %
dip in U
T
) for 0.5
period
40 % U
T
(60 % dip
in U
T
) for 5
periods
70 % U
T
(30 % dip
in U
T
) for 25
periods
<5 % U
T
(>95 %
dip in U
T
) for 250
periods
Mains power quality should be
that of a typical commercial or
hospital environment. If the
user of the EQUIPMENT
requires continued operation
during power mains
interruptions, it is
recomm ended for the
EQUIPMENT to be powered
from an unint erruptible power
supply.
Power frequency
(50Hz)
magnetic field
IEC 61000-4-8
3 A/m
3 A/m
Power frequency magnetic
fields should be at levels
characteristic of a typical
location in a typical commercial
or hospital environment.
NOTE: U T is the a.c. mains voltage prior to application of the test level.