EMC Guidance and Manufacturer
’
s Declaration
Guidance and manufacturer
’
s declaration
–
electromagnet emissions.
The M-640 is intended for use in the electromagnetic environment specified below. The customer or user of
this scale should ensure that it is used in such environment.
Emission Test
Compliance
Electromagnetic environment-
guidance
RF emissions
CISPR 11
Group 1
This scale uses RF energy only for
its internal function. Therefore, its
RF emissions are very low and not
likely to cause any interference in
nearby electronic equipment.
RF emissions
CISPR 11
Class B
This scale 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
Compliance
Guidance and manufacturer
’
s declaration
–
electromagnetic immunity.
The M-640 is intended for use in the electromagnetic environment specified below. The customer or the user
of this scale should ensure 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
6 kV contact
8 kV air
6 kV contact
8 kV air
Floors should be wood,
cement 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 not applicable
Mains power quality should be
that of a typical commercial or
hospital environment.
Surge IEC 61000-4-5
1kV line(s) to line(s)
2 kV line(s) to earth
1 kV differential mode
not applicable
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% 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
Mains power quality should be
that of a typical commercial or
hospital environment. If the
user of this scale requires
continued operation during
power mains interruptions, it is
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