Orbegozo TES 4650, Инструкция по эксплуатации, Страница: 39 / 79

TES 4650
39
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 Monitor.
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
√
P
80 MHz to 800 MHz
d=2.333
√
P
0.01 0.117 0.233
0.1 0.369 0.738
1 1.167 2.333
10 3.689 7.379
100 11.667 23.333
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.