Welch Allyn BP100SBP Directions For Use Manual page 31

Directions for use
Note1: 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 Welch Allyn Home Blood Pressure Monitor is used
exceeds the applicable RF compliance level above, the Welch Allyn Home Blood Pressure Monitor should be observed to
verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as
reorienting or relocating the Welch Allyn Home Blood Pressure Monitor.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Recommended separation distances between portable and mobile RF communications
equipment and the Welch Allyn Home Blood Pressure Monitor
The Welch Allyn Home Blood Pressure Monitor is intended for use in an electromagnetic environment in which radiated
RF disturbances are controlled. The customer or user of the Welch Allyn Home Blood Pressure Monitor can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications
equipment (transmitters) and the Welch Allyn Home Blood Pressure Monitor as recommended below, according to the
maximum output power of the communications equipment.
Rated max. output
power of transmitter
(W)
0.01
0.1
1
10
100
For transmitters rated at a maximum output power not listed above, the recommended separation distanced in meters
(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.
Electromagnetic immunity
Separation distance according to frequency of transmitter (m)
150 kHz to 80 MHz 80 MHz to 800 MHz
d= 1,2 d= 1,2
0.12 0.12
0.38 0.38
1.2 1.2
3.8 3.8
12 12
Field strengths from fixed RF transmitters, as
determined by an electromagnetic site survey
should be less than the compliance level in
b
each frequency range . Interference may occur
in the vicinity of equipment marked with the
following symbol:
800 MHz to 2,6 GHz
d= 2,3
0.23
0.73
2.3
7.3
23
Appendix 27
a
,