121
GENERAL INFORMATION ON USAGE AND MAINTENANCE
Guidance and manufacturer's declaration - electromagnetic immunity
The CT-1P/CT-1 is intended for use in the electromagnetic environment specified below.
The customer or the user of the CT-1P/CT-1 should assure that it is used in such an environ-
ment.
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, con-
crete 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(s) to line(s)
± 2 kV
line(s) to earth
± 1 kV
line(s) to line(s)
± 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% U
t
(>95% dip in U
t
)
for 0.5 cycle
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 cycle
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 or the CT-1P/CT-1
requires continued operation
during power mains interrup-
tions, it is recommended that
the CT-1P/CT-1 be powered
from an uninterruptible power
supply or 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 char-
acteristic of a typical location in
a typical commercial or hospital
environment.
NOTE U
t
is the a.c. mains voltage prior to application of the test level.
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