TM
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COMSPHERE 3900 Series Modems
Models 3920
Plus and 3921Plus
Government Requirements for the United Kingdom
Document Number 3920-A2-GK45-10
November 1996
Overview
This document highlights government requirements, safety warnings, installation procedures, and functions that
are unique to COMSPHERE 3900 Series modems installed within the United Kingdom. This document is
intended to be used in conjunction with the COMSPHERE 392xPlus Modems, Models 3920Plus and 3921Plus,
Installation and Operation Manual, Document No. 3920-A2-GN31. Please consult this Installation and
Operation Manual for overall operation of the 3900 Series modem.
Government Requirements for the United Kingdom
Connection to Supply Mains
IMPORTANT: The wires in the mains lead supplied with this equipment are coloured in accordance with the
following code:
Green and Yellow — Earth
Blue
— Neutral
Brown
— Live
As the colours of the cores in the mains lead of this equipment may not correspond with the coloured markings
identifying the terminals in your plug, proceed as follows:
•
The core which is coloured green and yellow must be connected to the terminal in the plug which is
marked with the letter E or by the earth symbol
, or coloured green and yellow.
•
The core which is coloured blue must be connected to the terminal which is marked with the letter N or
coloured black.
•
The core which is coloured brown must be connected to the terminal which is marked with the letter L or
coloured red.
SAFETY WARNING
This equipment must be earthed.
For pluggable equipment, the mains socket outlet shall be installed near the equipment and be easily accessible.
