Specification
● 35
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 Nox T3 device is used
exceeds the applicable RF compliance level above, the Nox T3 device should be observed to verify normal
operation. If abnormal performance is observed, additional measures may be necessary, such as reorienting or
relocating the Nox T3 device.
b
Over the frequency range 150kHz to 80MHz, field strengths should be less than 3V/m.
Recommended Separation Distance between Portable and Mobile
RF Communications Equipment and the Nox T3 Device
Recommended separation distance between portable and mobile RF communications equipment and the
Nox T3 device
The Nox T3 device is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or the user of the system can help prevent electromagnetic interference by maintaining
a minimum distance between portable and mobile RF communications equipment (transmitters) and the Nox T3
device 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
150kHz to
80MHz
d = 1.2√P
80MHz to
800MHz
d = 1.2√P
800MHz to 2.5GHz
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 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 80MHz and 800MHz, 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.
