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Chapter 2
2-8
DX-408/DX-408i Digital Key System Installation
3. Grounding
" The Protective Earth (P.E.) is provided via the GPO socket.
" Ensure that the GPO socket is correctly earthed and is connected to a single phase supply.
" Improper earthing may cause malfunctioning of the DX-408/DX-408i digital key system.
WARNING
Before removing the power lead from the KSU the following must be followed in order to
protect the KSU and service personnel.
Switch off Power
Remove all trunk connections
Remove Power Lead
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