CDR PlusWire User Guide
B1051067 Rev. A
21
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 CDR PlusWire is used exceeds the applicable RF
compliance above, CDR PlusWire should be observed to verify normal operation. If abnormal performance is observed,
additional measures may be necessary, such as reorienting or relocating the CDR PlusWire.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Table 7. Recommended Separation Distance Between Portable and Mobile RF
Communications Equipment and CDR PlusWire
PLEASE NOTE: CDR PlusWire is intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The customer or user of CDR PlusWire can help prevent electromagnetic
interference by maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and CDR PlusWire as recommended below, according to the maximum output power of the
communications equipment.
Rated maximum output power of
the transmitter (W)
Separation distance according to the frequency
of the transmitter (m)
150 kHz to 800 MHz
P
1.2
d
=
800 MHz to 2.5 GHz
P
3
.
2
d
=
0.01 0.12
0.23
0.1 0.38
0.73
1 1.2
2.30
10 3.8
7.3
100 12.0
23.00
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 800 MHz, 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.