User's Manual

PADECG User Manual EMC Information
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frequency range.
b
Interference may occur in the vicinity
of equipment marked with the
following symbol:
NOTE 1 At 80 MHz and 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.
a
Field strengths from fixed 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 PADECG is used
exceeds the applicable RF compliance level above, the PADECG should be observed to
verify normal operation. If abnormal performance is observed, additional measures may
be necessary, such as reorienting or relocating the PADECG.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
c The ISM (industrial, scientific and medical) bands between 0,15 MHz and 80 MHz are
6,765 MHz to 6,795 MHz; 13,553 MHz to 13,567 MHz; 26,957 MHz to 27,283 MHz;
and 40,66 MHz to 40,70 MHz. The amateur radio bands between 0,15 MHz and 80 MHz
are 1,8 MHz to 2,0 MHz, 3,5 MHz to 4,0 MHz, 5,3 MHz to 5,4 MHz, 7 MHz to 7,3
MHz, 10,1 MHz to 10,15 MHz, 14 MHz to 14,2 MHz, 18,07 MHz to 18,17 MHz, 21,0
MHz to 21,4 MHz, 24,89 MHz to 24,99 MHz, 28,0 MHz to 29,7 MHz and 50,0 MHz to
54,0 MHz.
Table 1 Test specifications for ENCLOSURE PORT IMMUNITY to RF wireless
communications equipment
Test
frequency
(MHz)
Band
a)
(MHz)
Service
a)
Modulation
b)
Maximum
power
(W)
Distance
(m)
Immunity
test level
385
380-390
TETRA
400
Pulse
modulation
b)
18
Hz
1,8
0,3
27
450
430-470
GMRS
460, FRS
460
FM
c)
± 5 kHz
deviation
1 kHz sine
2
0,3
28