S12 Vet Monitor User’s Manual
33
a
Field strengths from fixed RF 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 monitor is used exceeds the
applicable RF compliance level above, the monitor should be observed to verify normal
operation. If abnormal performance is observed, additional measures may be necessary, such
as re-orienting or relocating the monitor.
b
Over the frequency range 0.15 MHz to 80 MHz, field strengths should be less than 3 V/m.
Table 4
Recommended separation distances between portable and mobile RF communications
equipment and the monitor
The monitor is intended for use in an electromagnetic environment in which radiated RF disturbances
are controlled. The customer or the user of the monitor can help prevent electromagnetic interference
by maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and the monitor.
Rated
maximum
output power of
transmitter (w)
Separation distance according to frequency of transmitter
150kHz
～
80MHz
d =
P
2
.
1
80MHz
～
800MHz
d =
P
2
.
1
80 MHz
～
2.7 GHz
d =
P
3
.
2
0.01
0.12
0.12
0.23
0.1
0.38
0.38
0.73
1
1.20
1.20
2.30
10
3.80
3.80
7.30
100
12.00
12.00
23.00
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 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.