Welch Allyn Medical Diagnostic Equipment Medical Alarms 8.1x Manual Do Utilizador

Directions for use

Chapter 11   Specifications

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.

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 from an uninterruptible 
power supply or a 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 characteristic of a typical location in 
a typical commercial or hospital 
environment.

Note

t

 is the AC mains voltage prior to application of the test level.