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EN-24
Kendall SCD 700 Series
Guidance and manufacturer’s declaration - electromagnetic emissions
The SCD 700 Series controller is intended for use in the electromagnetic environment specified below. The customer or the user of the SCD 700 Series
should assure that it is used in such an environment.
Immunity test
IEC 60601
Test level
Compliance
Level
Electromagnetic environment - guidance
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
3 Vrms
150 kHz to 80 MHz
3 V/m
80 MHz to 2.5 GHz
3 Vrms
3 V/m
Portable and mobile RF communications equipment should be used no
closer to any part of the SCD 700 Series controller, including cables, than
the recommended separation distance calculated from the equation
applicable to the frequency of the transmitter.
Recommended separation distance
d = [1.17] √P
d = [1.17] √P 80 MHz to 800 MHz
d = [2.33] √P 800 MHz to 2.5 GHz
where
P
is the maximum output power rating of the transmitter in
watts (W) according to the transmitter manufacturer and
d
is the
recommended separation distance in metres (m).
Field strengths from fixed RF transmitters, as determined by an
electromagnetic site survey,
a
should be less than the compliance level in
each 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 SCD 700 Series
controller is used exceeds the applicable RF compliance level above, the SCD 700 Series should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such as reorienting or relocating the SCD 700 Series controller.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Recommended separation distance between
Portable and mobile RF communications equipment and the SCD 700 Series @ 3Vrms
The SCD 700 Series controller is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer
or the user of the SCD 700 Series can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the SCD 700 Series controller 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
0.24
0.1
0.37
0.37
0.74
1
0.86
0.86
1.7
10
3.7
3.7
7.4
100
8.6
8.6
17.0
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in meters (m) can be estimated using
the equation applicable to the frequency of the transmitter, where P is the maximum output 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.