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Guidance and manufacturer’s declaration – electromagnetic emissions
The Model 775 warming unit is intended for use in the electromagnetic environment specified below. The customer or the user of the Model
775 warming unit should assure that it is used in such an environment.
Emissions test
Compliance
Electromagnetic environment - guidance
RF emissions
CISPR 11
Group 1
The Model 775 warming unit uses RF energy only for its internal function. Therefore, its
RF emissions are very low and are not likely to cause any interference in nearby electronic
equipment.
RF emissions
CISPR 11
Class B
The Model 775 warming unit 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.
Harmonic emissions
IEC 61000-3-2
Class A
Voltage fluctuations/
Flicker emissions
IEC 61000-3-3
Complies
Guidance and manufacturer’s declaration – electromagnetic immunity
The Model 775 warming unit is intended for use in the electromagnetic environment specified below. The customer or the user of the
Model 775 warming unit 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
±8 kV contact
±15 kV air
±8 kV contact
±15 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 supply
lines
±1 kV for input/
output lines
±2 kV for power
supply lines
±1 kV for input/
output lines
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(s) to earth
±1 kV line to line
±2 kV line(s) to earth
Mains power quality should be that of a typical commercial or
hospital environment.
Voltage dips, short
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 Model 775 warming
unit requires continued operation during power mains
interruptions, it is recommended that the Model 775 warming
unit be powered from an uninterruptible power supply or a
battery.
Power frequency
(50/60 Hz) 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
UT is the a.c. mains voltage prior to application of the test level.
