APPENDIX 2 – EMC GUIDANCE AND MANUFACTURER’S DECLARATION
44
OM033-4 - CA850 Series 5 Operating Manual
Recommended separation distances between portable and mobile RF communications equipment
and the CA850 Audiometer
T
HE
CA850
A
UDIOMETER IS INTENDED FOR USE IN AN ELECTROMAGNETIC ENVIRONMENT IN WHICH RADIATED
RF
DISTURBANCES ARE CONTROLLED
.
T
HE CUSTOMER OR THE USER OF THE
CA850
A
UDIOMETER CAN HELP
PREVENT ELECTROMAGNETIC INTERFERENCE BY MAINTAINING A MINIMUM DISTANCE BETWEEN PORTABLE AND
MOBILE
RF
COMMUNICATIONS EQUIPMENT
(
TRANSMITTERS
)
AND THE
CA850
A
UDIOMETER 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
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
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 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 situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
