Welch Allyn Acuity and Mobile Acuity LT Central Monitoring Systems - User Manual - Manual (Page 189)

Directions for use Chapter 11 Specifications 185
Guidance and Manufacturer’s Declaration—Electromagnetic Immunity
The Acuity System is intended for use in the electromagnetic environment specified below. The customer or the user of
the Acuity System should assure 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, 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 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 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.
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 of the Acuity System requires
continued operation during power mains
interruption, it is recommended that the
monitor be powered with reliable AC power.
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 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.