Micro Direct MicroLoop Operating Manual page 33

Immunity Test
Voltage dips,
short
interruptions and
voltage
variations on
power supply
input lines
IEC61000-4-11
Power frequency
(50/60 Hz)
Magnetic field
IEC61000-4-8
NOTE U is the a.c. mains voltage prior to application of the test level.
T
Guidance and Manufacturer's Declaration – Electromagnetic Immunity
The MicroLoop is intended for use in the electromagnetic environment specified
below. The customer or the user of the MicroLoop should assure that it is used in
such an environment.
Immunity
Test
Conducted RF
IEC61000-4-6
IEC 60601 Test
Level
< 5% U
T
(> 95% dip in U
For 0.5 cycle
40% U
T
(60% dip in U )
T
for 5 cycles
70% U
T
(30% dip in U )
T
for 25 cycles <5%
U (> 95% dip in
T
U ) for 5 s
T
3 A / m
IEC 60601 Compliance
Test Level
3 Vrms 150
kHz to 80
MHz 3 Vrms
Compliance
Level
< 5% U
T
) (> 95% dip in U
T
For 0.5 cycle
40% U
T
(60% dip in U
for 5 cycles
70% U
T
(30% dip in U
for 25 cycles <5%
U (> 95% dip in
T
U ) for 5 s
T
3 A / m
Electromagnetic Environment -
Level Guidance
Portable and mobile RF
communications equipment should
be used no closer to any part of the
MicroLoop, including cables, than
the recommended separation
distance calculated from the
equation applicable to the
frequency of the transmitter.
Recommended separation
distance (d)
d = 1.2√P
30
Electromagnetic
Environment -
Guidance
Mains power quality
) should be that of a
T
typical commercial or
hospital environment.
) If the user of the
T
MicroLoop requires
continued operation
) during power mains
T
interruptions, it is
recommended that
the MicroLoop be
powered from an
uninterruptible power
supply or a battery
If incorrect operation
occurs, it may be
necessary to position
the MicroLoop further
from sources of
power frequency
magnetic fields or to
install magnetic
shielding. The power
frequency magnetic
field should be
measured in the
intended installation
location to assure that
it is sufficiently low.