Conducted RF
3 Vrms:
IEC 61000-4-6
0,15 MHz – 80
MHz
6 Vrms:
in ISM and
amateur
radio bands
between
0,15 MHz and 80
MHz
Radiated RF
80 % AM at 1 kHz
IEC 61000-4-3
10 V/m
80 MHz – 2,7
GHz
80 % AM at 1 kHz
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 TD-3128 is used
exceeds the applicable RF compliance level above, the TD-3128 should be observed to
verify normal operation. If abnormal performance is observed, additional measures may be
necessary, such as re-orienting or relocating the TD-3128.
b) Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
3 Vrms:
Portable and mobile RF
0,15 MHz – 80
communications
MHz
equipment should be used no
6 Vrms:
closer to any part of the TD-
in ISM and
3128 including cables, than the
amateur
recommended separation distance
radio bands
calculated from the equation
between
applicable to the frequency of the
0,15 MHz and
transmitter.
80 MHz
Recommended separation
distance:
80 % AM at 1
d = 1,2 √P
kHz
d = 1,2 √P 80 MHz to 800 MHz
d = 2,3 √P 800 MHz to 2,7 GHz
10 V/m
80 MHz – 2,7
Where P is the maximum output
GHz
power rating of the transmitter
80 % AM at 1
in watts (W) according to the
kHz
transmitter manufacturer and d
is the recommended separation
distance in metres (m).
Interference may occur in the
vicinity of equipment marked with
the following symbol:
24