8
INFORMATION OF ELECTROMAGNETIC COMPATIBILITY
Table 1
Guidance and manufacturer
’s declaration of electromagnetic emissions
The IT-903 is intended for use in the electromagnetic environment specified below. The customer
or the user of the IT-903 should assure that it is used in such an environment.
Emissions test
Compliance Electromagnetic environment-guidance
RF emissions
CISPR 11
Group 1
The IT-903 uses RF energy only for its internal function.
Therefore, its RF emissions are very low and are not likely
to cause and interference in nearby electronic equipment.
RF emissions
CISPR 11
Class B
The IT-903 is suitable for use in all establishments other
than domestic 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
N/A
Voltage fluctuations
/flicker emissions
IEC 61000-3-3
N/A
Table 2
Guidance and manufacturer
’s declaration-electromagnetic immunity
The IT-903 is intended for use in the electromagnetic environment specified below.The customer or
the user of the IT-903 should assure that it is used in such an environment.
Immunity test
IEC60601 test
level
Compliance
level
Electromagnetic
environment
–guidance
Electrostatic
discharge
(ESD)
IEC 61000-4-2
±2,±4,±6kV for
Contact discharge
±2,±4,±8kV
air
discharge
±2,±4,±6kV for
Contact discharge
±2,±4,±8kV
air
discharge
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 a.c.
power lines
±1
kV
for d.c.
power lines
N/A
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
N/A
Mains power quality should be that of a typical
commercial or hospital environment.
