TheraTouch® CX2/CX4/EX4
46
EMC TABLE
Theoretically, it is not possible to exactly
predict the field strengths of fixed
transmitters such as base stations for
radio telephones and land mobile radios,
amateur radio stations, AM and FM radio
and TV broadcasting. To determine the
electromagnetic environment in relation to
the fixed transmitters, an electromagnetic
site survey should be considered. If the
measured field strength in the location
where the TheraTouch® device is to be
used exceeds the above compliance
levels, the TheraTouch® device should
be monitored in order to ensure that
it is functioning as intended. If unusual
features are noticed, additional measures
may be necessary such as re-orienting or
relocating the TheraTouch® device.
Above the frequency range from 150 kHz
to 80 MHz, the field strength should be
less than 3 V/m.
Recommended separation distances
between portable and mobile RF
telecommunications 4-series and the
TheraTouch® device are in the
following table.
The TheraTouch® device is intended
for operation in an electromagnetic
environment where RF disturbances
are monitored. The customer or user
of the TheraTouch® Professional Series
device can help prevent electromagnetic
interference by maintaining a minimum
distance between portable and mobile RF
telecommunications 4-series (transmitters)
and the TheraTouch® device – according to
the output power of the communications
device, as indicated in the following table.
Rated Output of
Transmitter W
Separation Distance According to Frequency of Transmitter m
150 kHz to 80 MHz
d= 1.2
√
P
80 MHz to 800 MHz
d= 1.2
√
P
800 MHz to 2.7 GHz
d= 2.3
√
P
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 which is not listed above, the recommended
separation distance d in meters (m) can be determined using the equation applicable
to the respective column, whereby P is the maximum rated output of the transmitter in
Watts (W) according to the transmitter manufacturer.
NOTE 1: At 80 MHz and 800 MHz, the higher frequency range is applicable.
NOTE 2 : These guidelines may not be applicable in all cases. Electromagnetic
propagation is affected by absorption and reflection from structures,
objects and people.
