LANGER EMV-Technik ESA1, User Manual

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LANGER
EMV-Technik
DE-01728 Bannewitz
mail@langer-emv.de
www.langer-emv.com
ESA1
2.4 HFA 21 RF bypass
The RF bypass ( Figure 11 ) supplements the RF current transformer by providing another
capacitive or conductive connection from the unit under test to the ground plate if necessary.
Figure 11 HFA 21 RF Bypass
It is mainly used to simulate the data lines connected in normal operation and their capacitance
relative to the surroundings. Instead of the data line, a discrete capacitance is connected to the
signal output via a measuring line within the HFA 21 (
Figure 12 ). Alternative it is possible to
connect each single signal step by step to the capacitance by a Probe tip ( Figure 13 ). Defined RF
currents can thus be diverted to the ground plate. The HFA 21 contains capacitances from 10 pF to
100 nF.
Figure 12
Figure 13