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ENV216
Operating Manual
3560.6550.12 -01-
3.5
E-1
Reference ground
The network is connected to the PE grounding connection for the mains power supply through the
mains cable, but this is not adequate for use as a reference ground in HF noise voltage measurement.
The reference ground used can be attached flat to the grounding rail (2) on the side of the device by a
broad sheet metal with three metric M4 screws (1).
Grounding rail on the side of housing
In order to prevent RF interference emitted by the mains grounding conductor from reaching the refer-
ence mass, the grounding conductor and the reference mass are decoupled by a PE-choke. This choke
should not be bridged by the EMI test receiver, which is also connected to the measurement reference
ground. Therefore, either an isolated or a battery-powered receiver must be used, or a PE choke must
also be placed on the PE connection of the receiver.
1
2
2
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