Widex TV-DEX - Page 54

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 s
TV-BASE:
Dips of:
100% (duration
10ms and 20ms)
30% (duration
0.5s) and
10% (duration 5s)
reductions
TV-CONTROLLER:
Not applicable *)
Mains power quality
should be that of a
typical commercial or
hospital environment.
If the user of the
TV-DEX requires
continued operation
during power mains
interruptions, it is
recommended that the
TV-DEX be powered
from an
uninterruptable power
supply.
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 a.c. mains voltage prior to the application of the test level.
*) Battery powered equipment
54