Air Techniques PRO VECTA HD, Руководство по эксплуатации

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Page 27
Air Techniques, Inc.
Recommended safety distances between portable and mobile HF communications devices
and the appliance
The appliance is designed for operation in one of the electromagnetic environments as outlined below
in which the HF interference is controlled The customer/operator of the appliance can help to prevent
electromagnetic interference by maintaining minimum distances as recommended between portable
and mobile HF communications devices (transmitters) and the appliance as outlined below according
to the maximum output of the communications device
Rated power of
transmitter (W) Safety distance dependent on transmission frequency (m)
150 kHz to 80 MHz
d = 1.2
⋅√
P
80 MHz to 800 MHz
d = 1.2
⋅√
P
800 MHz to 2.5 GHz
d = 2.3
⋅√
P
001 012 012 023
01 038 038 073
1 12 12 23
10 38 38 73
100 12 12 23
Table 4: Recommended safety distances between portable and mobile HF communications devic-
es and the appliance
For transmitters whose maximum rated current is not included in the table above the recommended
safety distance d in metres (m) can be calculated using the following mathematical formula and the
appropriate column, where P is the maximum rated current of the transmitter in watts (W) according
to the information of the manufacturer of the transmitter
Note 1
Where 80 MHz and 800 MHz are present, the higher frequency range becomes
valid
Note 2 These guidelines are not applicable to all possible situations The exact amount
of electro-magnetic transmissions can be considerably influenced by the rate of
absorption and reflection within the building and the presence of objects and
people
Annex