Technical Description - Nissei WS-820 Instruction Manual

TECHNICAL DESCRIPTION

WS-820 complies with the EMC, electromagnetic compatibility, standard, IEC60601-1-2. Refer to the following tables for specifi c
information regarding compliance to the standard. WS-820, as a medical electrical equipment, needs special precautions regarding
EMC and needs to be installed and put into service according to the EMC information provided below.
• Portable and mobile RF communications equipments can aff ect the device.
• The use of accessories other than those specifi ed in this manual may result in increased emissions or decreased immunity of the
device.
• WS-820 should not be used adjacent to or stacked with other equipment.
WS-820 is intended for use in the electromagnetic environment specifi ed below. The customer or the user of WS-820 should assure
that it is used in such an environment.
Emissions test
RF emissions CISPR 11
RF emissions CISPR 11
Harmonic emissions IEC 61000-3-2
Voltage fl uctuations/fl icker emissions
IEC 61000-3-3
WS-820 is intended for use in the electromagnetic environment specifi ed below. The customer or the user of WS-820 should
assure that it is used in such an environment.
Immunity test
Electrostatic discharge (ESD)
IEC 61000-4-2
Electrical fast transient/
burst IEC 61000-4-4
Surge IEC 61000-4-5
Voltage dips , short
interruptions and voltage
variations on power supply
input lines IEC 61000-4-11
Power frequency (50/ 60
Hz) magnetic fi eld IEC
61000-4-8
NOTE U is the a.c. mains voltage prior to application of the test level.
T
Table 1 - Guidance and manufacturer' s declaration - electromagnetic emissions -
Compliance
Group 1
Class B
N/A
N/A
Table 2 - Guidance and manufacturer' s declaration - electromagnetic immunity -
IEC 60601 test level
±6 kV contact
±8 kV air
±2 kV for power supply lines
±1 kV for input/output lines
±1 kV diff erential mode
±2 kV common mode
<5% U (>95% dip in U
T
40% U (60% dip in U
T
70% U (30% dip in U
T
<5% U (>95% dip in U
T
3 A/m
Electromagnetic environment - guidance
WS-820 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.
Note: Operate by DC Power
Compliance
level
±6 kV contact
±8 kV air
N/A
N/A
) for 0,5 cycle N/A
T
) for 5 cycles
T
) for 25 cycles
T
) for 5 sec
T
3 A/m
Electromagnetic environment -
guidance
Floors should be wood, concrete or
ceramic tile.
If fl oors are covered with synthetic
material, the
relative humidity should be at least
30 %.
Note: Operate by DC Power.
Note: Operate by DC Power.
Note: Operate by DC Power.
Power frequency magnetic fi elds
should be at levels characteristic of
a typical location in a typical com-
mercial or hospital environment.