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Immunity test
IEC60601-1-2 test
level
Surge
±1 kV differential
IEC 61000-4-5
mode
±2 kV common mode
Voltage dips,
<5% Ut (>95% dip in
short
Ut) for 0.5 cycle
interruptions
40% Ut (60% dip in
and voltage
Ut) for 5 cycles
variations on
70% Ut (30% dip in
power supply
Ut) for 25 cycles
input lines
<5% Ut (>95% dip in
IEC 61000-4-11
Ut) for 5 sec
Power
3 A/m
frequency
(50/60 Hz)
magnetic field
IEC 61000-4-8
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
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 device is used exceeds the applicable RF compliance level above,
the device should be observed to verify normal operation. If abnormal performance is observed, additional measures may
be necessary, such as reorienting or relocating the device.
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
b
Notes:
•
Ut is the AC mains voltage prior to application of the test level.
•
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.
26
Compliance level
±1 kV differential
mode
±2 kV common mode
100V
240V
30 A/m
3 Vrms
150 kHz to 80 MHz
10 V/m
80 MHz to 2.5 GHz
Electromagnetic environment — guidance
Mains power quality should be that of a typical
commercial or hospital environment.
Mains power quality should be that of a typical
commercial or hospital environment.
If the user of the device requires continued operation
during power mains interruptions, it is recommended
that the device be powered from an uninterruptible
power source.
Power frequency magnetic fields should be at levels
characteristic of a typical location in a typical
commercial or hospital environment.
Portable and mobile RF communications equipment
should be used no closer to any part of the device,
including cables, than the recommended separation
distance calculated from the equation applicable to the
frequency of the transmitter.
Recommended separation distance
d = 0.35 √P
d = 0.35 √P 80 MHz to 800 MHz
d = 0.70 √P 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,
a
should be less than the compliance level in
b
each frequency range.
Interference may occur in the
vicinity of equipment marked with the following
symbol:
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