The hardware measures describe means to improve EMC which can be realized with the use of hardware. Among these are, e.g.:
| | Filtration and protection wiring of inputs and outputs and supply conductions
|
| | Shielding measures
|
| | Printed circuit board layout
|
| | Integration of anti-interference capacitors
|
| | Influence of the different modes of operation (e.g. 2-wire-CAN)
|
| | Selection of quartzes
|
| | others
|
Figure 61: Structure of EMC hardware measures
Example for content:
Representation example for forbidden frequency ranges for the use as oscillating circuit frequency, data transmission frequency or working frequency
Frequency
|
Distance
|
Function
|
4.6 MHz
|
50 kHz
|
Duplex distance in the 2m band
|
5.0 MHz
|
+ 50 kHz
|
Duplex distance in the 70 cm band
|
5.5 MHz
|
+ 50 kHz
|
TV-picture-sound carrier distance
|
9.8 MHz
|
+ 50 kHz
|
Duplex distance in the 4m band
|
10.0 MHz
|
+ 50 kHz
|
Duplex distance in the 2m band
|
10.7 MHz
|
+ 50 kHz
|
Intermediate frequencies in case of wireless equipments, radio sets
|
21.4 MHz
|
+ 50 kHz
|
Intermediate frequencies in case of wireless equipments
|
45.0 MHz
|
+ 50 kHz
|
Duplex
|
auto-defined
|
auto-defined
|
auto-definable frequencies
|
The description of the requirements can be given in textual or in graphical form.
|