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Appendix 4
Tips for Establishing an HDBaseT Compliance Environment
and Ethernet Cable Selection
Tips for Establishing an HDBaseT Compliance Environment
HDBaseT alliance defines the maximum number of cables in a bundle use case to be six cables per
bundle. Table below defines the maximum number of cables in a bundle as a function of cable type &
the overlapping length.
HDBaseT Cabling-Permissible Number of Cables in a Bundle
Type
30m
50m
70m
100m
CAT5e/6
6
4
2
1
CAT6a/7
6
6
6
6
The following installation practices can help to withstand the external interference when using
CAT5e/6 cables:
。
A ) Do not “comb” or “pinstripe” cables in the first 20 meters.
B
）
Use separate patch and equipment cords in the first 20 meters.
C
）
Avoid use of tie-wraps.
D
）
Use horizontal wire management techniques. For example, route odd ports to upper management
and even ports to lower management.
E
）
Loosely place cables in vertical wire management.
F
）
Reduce maximum conduit fill density to 40%.
G
）
It is recommended to roll the cable around a fixed radius drum in an orderly manner. This is
shown on the left hand side of below. When the turns are ordered, the electromagnetic coupling
between the various sections that occurs in a randomly rolled cable is reduced. The FEXT impairment
level measured when rolling an Ethernet cable around a 70 cm fixed diameter plastic drum is only
slightly higher than that of a fully stretched cable.
