Electromagnetic immunity
Immunity test
Electrostatic discharge (ESD)
IEC 61000-4-2
Electrical fast transients/bursts
IEC 61000-4-4
Surge
IEC 61000-4-5
Voltage dips, short interruptions
and voltage variations on power
supply lines
IEC 61000-4-11
Power frequency (50/60 Hz)
magnetic field IEC 61000-4-8
U
is the AC mains voltage prior to application of the test level. EUT is the Unit Under Test
T
Immunity test IEC 60601
test level
Conducted RF -
3 Vrms
IEC 61000-4-6
150 kHz to
80 MHz
Radiated RF -
3 V/m
IEC 61000-4-3
80 MHz to
2.5 GHz
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 be absorption and
reflection from structures, objects and people.
a
Field strengths from fixed transmitters, such as base stations for ratio (cellular/cordless) telephones and land
mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast cannot be predicated 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 Dual Move is used exceeds the
applicable RF compliance level above, the Dual Move should be observed to verify normal operation. If abnormal
10
IEC 60601 test level
±6 kV contact
±8 kV air
±2 kV for power supply lines
±1 kV for input/output lines
±1 kV line(s) to line(s)
±2 kV line(s) to earth
<5% UT (>95% dip in UT) for 0.5 cycle
40% UT (60% dip in UT) for 5 cycles
70% UT (30% dip in UT) for 25 cycles
<5% UT (>95% dip in UT) for 5s
3 A/m
Compliance
Electromagnetic environment - guidance
level
3V
Portable and mobile RF communications equipment should be used no closer to any part of
the medical device, including cables, than the recommended separation distance calculated
from the equation applicable to the frequency of the transmitter.
Recommended separation distance
d=1.2√
P
d=1.2√
800 MHz ~ 800 MHz
P
d=2.3√
800 MHz ~ 2.5 GHz
3.5 V/m
P
Where
is the maximum output power rating of the transmitter in watts (W) according to the
P
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, should be
less than the compliance level in each frequency range.**
Interference may occur in the vicinity of equipment marked with the following symbol:
Compliance level
Electromagnetic environment -
guidance
±2, 4, 6 kV contact
Floors should be in wood, concrete or
±2, 4, 8 kV air
ceramic tile. If covered by synthetic
material, the relative humidity should
be at least 30 %.
Not applicable
The test is applicable since the EUT
Not applicable
does not have AC/DC power plugs
and signal / interconnecting cable
longer than 3m.
Not applicable
The test is not applicable since the
Not applicable
EUT does not have AC power plug.
Not applicable
The test is not applicable since the
Not applicable
EUT does not have AC power plug.
Not applicable
Not applicable
3 A/m
Power frequency magnetic field
should be at levels characteristic
of a typical location in a typical
commercial or hospital environment.