Philips DL8765 Manual page 12

NOTE 1 At 80 MHz and 800 MHz, the higher fre­
quency range applies.
NOTE 2 These guidelines may not apply in all situ­
ations. 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) tele­
phones 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 device is used exceeds the
applicable RF compliance level above, the device
should be observed to verify normal operation. If
abnormal performance is observed, additional
measures may be necessary, such as re-orienting
or relocating the device.
(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
ME equipment or ME system – for ME
equipment and ME systems that are
not life supporting
Recommended separation distances between
portable and mobile RF communications equip­
ment and the device.
The device is intended for use in an electromag­
netic environment in which radiated RF distur­
bances are controlled. The customer or the user of
the device can help prevent electromagnetic inter­
ference by maintaining a minimum distance
between portable and mobile RF communications
equipment (transmittters) and the device as rec­
ommended below, according to the maximum out­
put power of the communications equipment.
Rated
maximum
output
power of
transmitter
(W)
0.01
0.1
1
10
100
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.
NOTE 1 At 80MHz and 800MHz, the separation
distance for the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situ­
ations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects
and people.
Separation distance according to
frequency of transmitter (m)
150 kHz to
80 MHz
Ö
d = 1.167
P
0.117
0.369
1.167
3.690
11.67
80 MHz 800 MHz
to 800 to 2.5 GHz
MHz
d = 1.167
Ö
d = 1.167 P
P
0.117 0.233
0.369 0.738
1.167 2.333
3.690 7.378
11.67 23.33
Ö