GUIDANCE AND MANUFACTURE’S DECLARATION – ELECTROMAGNETIC IMMUNITY
The Digital Blood Pressure Monitor is intended for use in the electromagnetic environment specified below. The
customer or the user of Digital Blood Pressure Monitor should assure that it is used in such an environment.
Immunity test
Electromagnetic environment - guidance
Radiated RF
IEC 61000-4-3
3A/m
80 MHz to 2.5
GHz
3A/m
Portable and mobile RF communications equipment
should be used no closer to any part of the Digital
Blood Pressure Monitor, including cables, than the
recommended separation distance calculated from the
equation applicable to the frequency of the transmitter.
Recommended separation distance
d=1.167
80 MHz to 800 MHz
d=2.333
800 MHz to 2.5 GHz
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 meters (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 Digital Blood Pressure
Monitor is used exceeds the applicable RF compliance level above, the Digital 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
Digital Blood Pressure Monitor.
b
Over the frequency range 150 KHz to 80 MHz, field strengths should be less than 3V/m.
RECOMMENDED SEPARATION DISTANCES BETWEEN
PORTABLE AND MOBILE RF COMMUNICATIONS EQUIPMENT AND THE DIGITAL BLOOD PRESSURE
Pressure Monitor is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or the user of the Digital Blood Pressure Monitor can help prevent electromagnetic
interference by maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and the Digital Blood Pressure Monitor as recommended below, according to the maximum
output power of the communications equipment.
Output power of transmitter
Separation distance according to frequency of transmitter(m)
80 MHz to 800 MHz
d=1.167
800 MHz to 2.5 MHz
d=2.333
For transmitters rated at a maximum output power not listed above, the recommended separation distance d 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 l: 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.
871125208143.indd 18 14-03-18 14:53
To Next Page
Loading...