OPTIKON CRYO-LINE - Page 19

CRYO-LINE Manual for installation and use
OPTIKON 2000
Code 131002 EN 2014-02-06 Rev.F
5-5
NOTE:
U
T
is the a.c. mains voltage prior to application of the test level
Note 1:At 80 MHz and 800 MHz, the higher frequency range applies.
Note2: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) and land
mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast cannot be predicted
theoretically with accuracy. To access 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 Cryo-Line is used exceeds the applicable RF compliance level above, the Cryo-Line should
be observed to verify normal operation. If abnormal performance is observed, additional measures
may be necessary, such as re-orienting or relocating the Cryo-Line unit.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
5.4.3 RECOMMENDED SEPARATION DISTANCES BETWEEN PORTABLE AND MOBILE
RF COMMUNICATION EQUIPMENT AND CRYO-LINE
Cryo-Line is intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of Cryo-Line can help preventing
electromagnetic interference by maintaining a minimum distance between portable and
mobile RF communications equipment (transmitters) and Cryo-Line 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 rates at maximum output power not listed above, the recommended
separation distance 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:
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.