27
28
POTENTIAL FOR ELECTROMAGNETIC
INTERFERENCE
To avoid inaccurate results caused by electromagnetic interference between
electrical and electronic equipment, do not use the device near a cell
phone or microwave oven. For most wireless
communication devices, it is recommended to
maintain a distance of 10.8 feet (3.3m) in order to
avoid electromagnetic interference.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference,
and (2) this device must accept any interference
received, including interference that may cause
undesired operation.
FEDERAL COMMUNIATIONS COMMISSION COMPLIANCE STATEMENT
Changes or modifications to this equipment not expressly approved by the
manufacturer could void the user’s authority to operate the equipment.
This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference
in a residential installation. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or
more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
ELECTROMAGNETIC COMPATIBILITY (EMC)
• Guidance and manufacturer’s declaration – electromagnetic emissions
The device is intended for use in the electromagnetic environments listed below, and should only be
used in such environments:
Emissions test
Compliance
Electromagnetic environment – guidance
RF emissions CISPR 11
Group 1
RF energy is used only to maintain device’s operation.
Therefore, its RF emissions are so low that it’s not likely to
cause any interference in nearby electronic equipment.
RF emissions CISPR 11
Class B
Harmonic emissions IEC
61000-3-2
Class A
The device is suitable for use in all establishments,
including domestic establishments, and those directly
connected to the public low-voltage power supply network
that supplies buildings used for domestic purposes.
Voltage fluctuations/ flicker
emissions IEC 61000-3-3
Complies
• Guidance and manufacturer’s declaration – electromagnetic immunity
The device is intended for use in the electromagnetic environments listed below, and should only be used in
such environments:
Immunity test
IEC 60601 test level
Compliance level
Electromagnetic environment–
guidance
Electrostatic
discharge (ESD)
IEC 61000-4-2
± 6 kV contact
± 8 kV air
± 6 kV contact
± 15 kV air
The relative humidity should be at
least 5 %.
Power frequency
(50/60 Hz)
magnetic field
IEC 61000-4-8
3 A/m
30 A/m
Power frequency magnetic fields
should be at levels characteristic of
a typical location in a typical com-
mercial or hospital environment.
I
r = --------- (m)
188
where I is the current in amperes in
a power bus or an appliance wire
and r is the recommended sepera-
tion distance between your device
and the power bus or application
wire, in meters (m).
Electrical fast
transient/burst
IEC 61000-4-4
± 2 kV for power supply
lines
± 1 kV for input/output
lines
± 2 kV for power sup-
ply lines
± 1 kV for input/out-
put lines
Mains power quality should be that
of a typical commercial or hospital
environment.
Surge
IEC 61000-4-5
± 1 kV line(s) to line(s)
± 2 kV line(s) to earth
± 1 kV line(s) to
line(s)
± 2 kV line(s) to earth
Mains power quality should be that
of a typical commercial or hospital
environment.
interruptions and
voltage variations
on power supply
input lines
IEC 61000-4-11
<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 5 sec
<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 5 sec
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 supply or a battery.
