Matrix Vision mvBlueFOX, Technical Manual, Page: 21 / 255

14 CONTENTS
5.1 High-Speed USB design guidelines
If you want to make own High-Speed (HS) USB cables, please pay attention to following design guidelines:
• Route High-Speed (HS) USB signals with a minimum number of vias and sharp edges!
• Avoid stubs!
• Do not cut off power planes VCC or GND under the signal line.
• Do not route signals no closer than 20
∗
h to the copper layer edge if possible (h means height over the
copper layer).
• Route signal lines with 90 Ohm +- 15% differential impedance.
– 7.5 mil printed circuit board track with 7.5 mil distance result in approx. 90 Ohm @ 110 um height over
GND plane.
– There are other rules when using double-ply printed circuit boards.
• Be sure that there is 20 mil minimum distance between High-Speed USB signal pair and other printed circuit
board tracks (optimal signal quality).
5.2 European Union Declaration of Conformity statement
The mvBlueFOX complies with the provision of the following European Directives:
• 2014/30/EU (EMC directive)
• 2014/35/EU (LVD - low voltage directive)
• For EN 61000-6-3:2007, mvBlueFOX-IGC with digital I/O needs the Steward snap-on ferrite
28A0350-0B2 on I/O cable.
• For EN 61000-6-3:2007, mvBlueFOX-MLC with digital I/O needs the Würth Elektronik snap-on
ferrite WE74271142 on I/O cable and copper foil on USB.
MATRIX VISION corresponds to the EU guideline WEEE 2002/96/EG on waste electrical and elec-
tronic equipment and is registered under WEEE-Reg.-No. DE 25244305.
MATRIX VISION GmbH