IFU-001 Rev D June 2014
FDA 510(k) Cleared
a. Field strengths from fixed transmitters, such as based stations for radio (cellular and
cordless) 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 CP Relief Wand® is
used exceeds the applicable RF compliance level above, the CP Relief Wand® should be
observed to verify normal operation. If abnormal performance is observed, additional
measures may be necessary, such as reorienting or relocating the device.
b. Over the frequency range of 150 KHz to 80 MHz, field strengths should be less
than 3 V/m.
Table 4: Recommended separation distances between portable and
mobile RF communication equipment and the CP Relief Wand®.
The CP Relief Wand® is intended to be used in an electromagnetic environment
in which radiated RF disturbances are controlled. The customer or user of the
device can help prevent electromagnetic interference by maintaining a minimum
distance between portable and mobile RF communications equipment
(transmitters) as recommended below, according to the maximum output power
of the communications equipment.
Rated maximum
output power of
transmitter (W)
Separation distance (m) according to frequency of transmitter
0.01
0.12
0.23
0.1
1
10
100
0.38
1.2
3.8
12
0.73
2.3
7.3
23
80 MHz to 800 MHz
d = 1.2 √
P
For transmitters 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 of the transmitter in Watts (W) according to the
manufacturer.
NOTE 1: At 80 MHz to 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.
800 MHz to 2.5 GHz
d = 2.3 √
P
NOTE 1: At 80 MHz to 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.
