Welch Allyn 6702 Mode D'emploi page 33

Directions for use
Voltage dips, short
interruptions and
voltage variations on
power supply input
lines
IEC 61000-4-11
Power frequency (50/
60 Hz) magnetic field
IEC 61000-4-8
Note: U is the a.c. mains voltage prior to application of the test level.
T
The Welch Allyn Masted Scale is intended for use in the electromagnetic environment specified below. The customer or
the user of the Welch Allyn Masted Scale should assure that it is used in such an environment.
Immunity test
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
Electromagnetic immunity
<0 % U (>100 % dip in <0 % U
T T
U ) for 1 cycle @ 0° U ) for 1 cycle @ 0°
T T
70 % U (30 % dip in 70 % U
T T
U ) for 25/30 cycles @ U ) for 25/30 cycles @
T T
0° 0°
<0 % U (>100 % drop <0 % U
T T
in U ) for 0.5 cycles @ in U ) for 0.5 cycles @
T T
0°, 45°, 90°, 135°, 0°, 45°, 90°, 135°,
180°, 225°, 270°, & 180°, 225°, 270°, &
315° 315°
0% for 250/300 cycles 0% for 250/300 cycles
@ 0° @ 0°
30 A/m 30 A/m
Electromagnetic immunity
IEC 60601 test level Compliance level
3 Vrms 3 V
150 kHz to 80 MHz
6Vrms 6V
ISM Band frequency
(MHz) : 6.675 – 6.795,
13.553 – 13.567, 26.
957 – 27.284 & 40.66
– 40.70
3 V/m 3 V/m
80 MHz to 2.7 GHz
Mains power quality should be that of a typical
(>100 % dip in
commercial or hospital environment. If the user
of the Welch Allyn Masted Scale requires
(30 % dip in
continued operation during power mains
interruptions, it is recommended that the
Welch Allyn Masted Scale be powered from an
uninterruptible power supply or a battery.
(>100 % drop
Power frequency magnetic fields should be at
levels characteristic of a typical location in a
typical commercial or hospital environment.
Electromagnetic environment - guidance
Portable and mobile RF communications
equipment should be used no closer to any part
of the Welch Allyn Masted Scale, including
cables, than the recommended separation
distance calculated from the equation
applicable to the frequency of the transmitter.
Recommended separation distance
d= (1.17)
d= (1.17)
d= (2.33) 800 MHz to 2.7 GHz
where P is the maximum output power rating of
the transmitter in watts (W) according to the
transmitter manufacturer and d is the
Appendices 29
80 to 800 MHz