Samsung DX-408, Installation Manual

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2-1
Chapter
2
DX-408/DX-408i Digital
Key System Installation
Installation Precautions
Selecting Location
Select a location providing sufficient space and good light to facilitate installation and
servicing of the DX-408/DX-408i digital key system.
Minimising Static Electricity
Antistatic precautions should be observed during installation and maintenance on the system.
The DX-408/DX-408I systems must be plugged into a properly earthed mains supply socket.
Correct Cable Requirements
Select a KSU location minimizing the length of the system cable, and ensure that all the lines
or cables from and to the DX-408/DX-408i digital key system are protected from damage. In
addition, be careful to minimise interference from electromagnetic waves by avoiding the
running of cables parallel to an AC power cable.
Refer to the cable requirements shown in the following table.
Equipment Cables
Wire
Dia
(mm)
MAX FEET(ft) MAX METRE(m)
Digital keyset 1PR. Twisted .50 1300 400
Analogue telephone 1PR. Twisted .50 3000 1000
Door phone 2PR. Twisted .50 330 100
DPIM 1PR. Twisted .50 1000 300