Canon TX-20 Full Auto Tonometer 手册
92
Appendix
Guidance and Manufacturer’s Declaration for Electromagnetic Immunity
The TX-20 is intended for use in the electromagnetic environment specified below.
The customer or the user of the TX-20 should assure that it is used in such an environment.
The customer or the user of the TX-20 should assure that it is used in such an environment.
Immunity Test
IEC 60601
Test Level
Compliance Level
Electromagnetic Environment – Guidance
Electrostatic discharge
(ESD)
EN IEC 61000-4-2
(ESD)
EN IEC 61000-4-2
±(2, 4, 6) kV contact
±(2, 4, 8) kV air
±(2, 4, 6) kV contact
±(2, 4, 8) 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%.
tile.
If floors are covered with synthetic material,
the relative humidity should be at least 30%.
Electrical fast transient/
burst
EN IEC 61000-4-4
burst
EN IEC 61000-4-4
±2 kV for power supply
lines
lines
±1 kV for input/output
lines
lines
±2 kV for power supply
lines
lines
±1 kV for input/output
lines
lines
Mains power quality should be that of a
typical commercial or hospital environment.
typical commercial or hospital environment.
Surge
EN IEC 61000-4-5
EN IEC 61000-4-5
±1 kV differential mode
±2 kV common mode
±1 kV differential mode
±2 kV common mode
Mains power quality should be that of a
typical commercial or hospital environment.
typical commercial or hospital environment.
Voltage dips, short
interruptions and
voltage variations on
power supply input
lines
EN IEC 61000-4-11
interruptions and
voltage variations on
power supply input
lines
EN IEC 61000-4-11
<5% U
T
(>95% dip in
U
T
) for 0.5 cycles
40% U
T
(60% dip in U
T
)
for 5 cycles
70% U
T
(30% dip in U
T
)
for 25 cycles
<5% U
T
(>95% dip in
U
T
) for 5 sec
<5% U
T
(>95% dip in
U
T
) for 0.5 cycles
40% U
T
(60% dip in U
T
)
for 5 cycles
70% U
T
(30% dip in U
T
)
for 25 cycles
<5% U
T
(>95% dip in
U
T
) for 5 sec
Mains power quality should be that of a
typical commercial or hospital environment.
If the user of the TX-20 requires continued
operation during power mains interruptions, it
is recommended that the TX-20 be powered
from an uninterruptible power supply.
typical commercial or hospital environment.
If the user of the TX-20 requires continued
operation during power mains interruptions, it
is recommended that the TX-20 be powered
from an uninterruptible power supply.
Power frequency
(50/60Hz) magnetic
field
EN IEC 61000-4-8
(50/60Hz) magnetic
field
EN 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.
at levels characteristic of a typical location in
a typical commercial or hospital environment.
NOTE: U
T
is the AC mains voltage prior to application of the test level.
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