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Walgreens WGNBPA-755BT User Manual page 20

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interruptions
<5 % UT (>95 % dip in
and voltage
UT) for 0,5 cycle
variations on
40 % UT (60 % dip in
power supply
UT) for 5 cycles
input lines
70 % UT (30 % dip in
IEC 61000-4-11
UT) for 25 cycles
<5 % UT (>95 % dip in
UT) for 5 sec
• Recommended separation distances between portable and mobile RF communication equipment
and the device.
The device is intended for use in an electromagnetic environment where radiated RF disturbances are
under control. User can help prevent electromagnetic interference by keeping the device at a minimum
distance from portable and mobile RF communications equipment (transmitters). Below table details the
maximum output power of transmitter:
Rated maximum
Separation distance according to frequency of transmitter m
output power of
150 kHz to 80 MHz
transmitter W
d = 1.2
0.01
0.12
0.1
0.38
1
1.2
10
3.8
100
12
For transmitters rated at a maximum output power not listed above, the recommended separation
distance d in metres (m) can be estimated using the equation applicable to the frequency of the
transmitter, where P is the maximum output power rating of the transmitter in watts (W) according to
the transmitter manufacturer.
NOTE 1 At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
<5 % UT (>95 % dip
Mains power quality should be that
in UT) for 0,5 cycle
of a typical commercial or hospital
40 % UT (60 % dip in
environment. If the user of the de-
UT) for 5 cycles
vice requires continued operation
70 % UT (30 % dip in
during power mains interruptions,
UT) for 25 cycles
it is recommended that the device
<5 % UT (>95 % dip
be powered from an uninterruptible
in UT) for 5 sec
power supply or a battery.
80 MHz to 800 MHz
800 MHz to 2.5 GHz
d = 1.2
d = 2.3
0.12
0.23
0.38
0.73
1.2
2.3
3.8
7.3
12
23
38
• Guidance and manufacturer's declaration – electromagnetic immunity
The device is intended for use in the electromagnetic environments listed below, and should only be
used in such environments:
Immunity
IEC 60601
Compliance
test
test level
level
Conducted
3 Vrms
6 Vrms
Portable and mobile RF communications equipment should
RF
150 kHz to
be used no closer to any part of the device, including cables,
IEC 61000-
80 MHz
10 V/m
than the recommended separation distance calculated from
4-6
the equation applicable to the frequency of the transmitter.
3 V/m
Recommended separation distance
Radiated
80 MHz to
d = 1.2
RF
2.5 GHz
d = 1.2 80 MHz to 800 MHz
IEC 61000-
4-3
d = 2 .3 800 MHz to 2.5 GHz
where P is the maximum output power rating of the transmit-
ter in watts (W) according to the transmitter manufacturer
and d is the recommended separation distance in metres
(m).
Field strengths from fixed RF transmitters, as determined by
an electromagnetic site survey, a should be less than the
compliance level in each frequency range.b
Interference may occur in the vicinity of equipment marked
with the following symbol:
NOTE 1 At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
a Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and
land mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast cannot be predicted
theoretically with accuracy. To assess the electromagnetic environment due to fixed RF transmitters, an
electromagnetic site survey should be considered. If the measured field strength in the location in which
the device is used exceeds the applicable RF compliance level above, the device should be observed to
verify normal operation. If abnormal performance is observed, additional measures may be necessary,
such as reorienting or relocating the device.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Electromagnetic environment – guidance
39

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