Welch Allyn ProBP 2400 User Manual page 37

Guidance and manufacturer's declaration – electromagnetic immunity –
for EQUIPMENT and SYSTEM that are not LIFE-SUPPORTING
Guidance and manufacturer's declaration – electromagnetic immunity
The ProBP 2400 Digital Blood Pressure Device is intended for use in the electromagnetic environment specified below. The
customer or the user of the ProBP 2400 Digital Blood Pressure Device should assure that it is used in such an environment.
Immunity test IEC 60601 test Compliance
level
Conducted RF 3 Vrms 3V
IEC 61000-4-6 150 kHz to 80
MHz
Radiated RF 3 V/m 3 V/m
IEC 61000-4-3 80 MHz to 2.5 GHz
NOTE 1 At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic is affected by absorption and reflection from structures,
objects and people.
Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios,
a
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 ProBP 2400 Digital Blood Pressure Device is used exceeds the applicable RF compliance level
above, the ProBP 2400 Digital Blood Pressure Device should be observed to verify normal operation. If abnormal performance is
observed, additional measures may be necessary, such as re orienting or relocating the ProBP 2400 Digital Blood Pressure Device .
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3V/m.
Welch Allyn ProBP 2400 digital blood pressure device
Electromagnetic environment - guidance
level
Portable and mobile RF communications equipment
should be used no closer to any part of the ProBP
2400 Digital Blood Pressure Device, including cables,
than the recommended separation distance calculated
from the equation applicable to the frequency of the
transmitter.
Recommended separation distance
3 5 .
d [ ] P
=
V
1
3 5 .
80 MHz to 800 MHz
d [ ] P
=
E
1
7
800 MHz to 2.5 GHz
d [ ] P
=
E
1
where p is the maximum output power rating of the
transmitter in watts (W) according to the transmitter
manufacturer and d is the recommended separation
distance in metres (m).
b
Field strengths from fixed RF transmitters, as
determined by an electromagnetic site survey,
be less than the compliance level in each frequency
range.
b
Interference may occur in the vicinity of equipment
marked with the following symbol:
Recommended separation distances between portable and mobile
RF communications equipment and the EQUIPMENT or SYSTEM -
for EQUIPMENT and SYSTEMS that are not LIFE-SUPPORTING
portable and mobile RF communications equipment and the ProBP 2400 Digital Blood Pressure
The ProBP 2400 Digital Blood Pressure Device is intended for use in an electromagnetic environment
in which radiated RF disturbances are controlled. The customer or the user of the ProBP 2400 Digital
Blood Pressure Device can help prevent electromagnetic interference by maintaining a minimum
distance between portable and mobile RF communications equipment (transmitters) and the ProBP
2400 Digital Blood Pressure Device as recommended below, according to the maximum output
power of the communications equipment
Rated maximum
output of transmitter
W
0.01
0.1
1
10
100
For transmitters rated at a maximum output power not listed above the recommended
a should 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.
Recommended separation distances between
Device
Separation distance according to frequency of transmitter
m
150 kHz to 80 MHz 80 MHz to 800 MHz
3 5 . 3 5 .
d [ ] P d [ ]
= =
V E
1 1
0.12 0.12
0.38 0.38
1.2 1.2
3.8 3.8
12 12
800 MHz to 2.5 GHz
7
P d [ ] P
=
E
1
0.23
0.73
2.3
7.3
23
37
EN