7 “Optimal system”
There one main precondition for “optimal system”: All the single
components should have the same shielding effectiveness. That is, both
components are equivalent far their shielding
effectiveness concerned.
^ The shielding effectiveness deteriorates considerably when
the cable length increased, for example, metres.98: Shielding effectiveness measurements
■=> The measurement results for pre-assembled cables depend on
the shielding effectiveness the connector
The shielding effectiveness pre-assembled cable can only good
as that the "weakest component".6.
^ conclusion, can said that the characteristic curve of
the cable approaches that the connector. However, must taken into account that this only valid for
a cable length metre.
Some cables have greater shielding effectiveness compared standard
connector. Thus over
engineering avoided and total system costs are kept minimum.
Han standard Han standard
LiYCY-cable housing LiYCY-cable
Line-injection method 1MHz 10MHz 100MHz 1GHz
VG 95214-11-12 Frequency
Fig. 3.5.64
3.
