27
Recommended separation distances between portable and mobile RF communications equip-
ment and the CMS70A
The CMS70A is intended for use in an electromagnetic environment in which radiated RF distur-
bances are controlled. The customer or the user of the CMS70A can help prevent electromagnetic
interference by maintaining a minimum distance between portable and mobile RF communications
equipment (transmitters) and the CMS70A 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
80 MHz to 800 MHz
800 MHz to 2.5 GHz
Main power
line
Probe
0,01
0,12
0,35
0,12
0,23
0,1
0,37
1,11
0,37
0,74
1
1,2
3,50
1,17
2,33
10
3,7
11,07
3,69
7,38
100
12
35,00
11,67
23,33
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 max-
imum output power rating of the transmitter in watts (W) according to the transmitter manufacturer.
Note 1:
At 80 MHz and 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.
Recommended separation distances between portable and mobile
RF communications equipment and the EQUIPMENT or SYSTEM – for
EQUIPMENT or SYSTEM that are not LIFE-SUPPORTING
3.5
E
1
√
P
d
=
7
E
1
√
P
d
=
3.5
V
1
√
P
d
=
