SE-2003&SE-2012 Holter System Recorder User Manual
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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 transmitter, an electromagnetic site survey should be
considered. If the measured field strength in the location in which the model recorder is
used exceeds the applicable RF compliance level above, the model recorder should be
observed to verify normal operation. If abnormal performance is observed, additional
measures may be necessary, such as reorienting or relocating the model recorder.
b
Over the frequency range 150 kHz to 80MHz, field strengths should be less than 3V/m.
Recommended separation distances between portable and mobile
RF communications equipment and the EQUIPMENT or SYSTEM -
for EQUIPMENT or SYSTEM that are not LIFE-SUPPORTING
Recommended separation distances between
portable and mobile RF communications equipment and Holter System Recorder
Holter System Recorder is intended for use in an electromagnetic environment in which
radiated RF disturbances are controlled. The customer or the user of Holter System Recorder
can help prevent electromagnetic interference by maintaining a minimum distance between
portable and mobile RF communications equipment (transmitters) and Holter System Recorder
as recommended below, according to the maximum output power of the communications
equipment.
Rated maximum
output power of
transmitter (W)
Separation distance according to frequency of transmitter(m)
150 kHz to 80
MHz
Pd 2.1=
80 MHz to 800
MHz
Pd 2.1=
800 MHz to 2.5 GHz
Pd 3.2=
0.01
0.12 0.12 0.23
0.1
0.38 0.38 0.73
1
1.2 1.2 2.3
10
3.8 3.8 7.3
100
12 12 23
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 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.
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