Decision Data 3000 Series, Руководство пользователя

Страница: 15 / 116

Installation
Enviromental Requirements
1. The 3494 controllers should be installed indoors where it is dry, reasonably cool and
clean, but otherwise it is not sensitive to environmental conditions or position as long
as the specifications, described below, are adhered to.
2. Its location should be convenient for access to cable channels. It should be installed
where it will not be subjected to extreme vibrations, dust, or fumes which could
damage the disk drives.
3. Enough clear space should be left at the front and back of the controller to allow the free
circulation of air and easy access.
4. Communication cables may be connected to the rear of the unit, therefore at least three
feet (approx. 1 m) clearance should be allocated behind the controller to allow cables
to be accessed and boards to be replaced.
5. Be sure the power receptacle is properly grounded and that your Twinax cable and cable
installation comply with Twinax standards.
2.2Connecting the Cables
This section describes how to connect all cables.
2.2.1General Instructions
Refer to the following illustration of the controller back panel when following the instructions
for the connections of the cables.
•
Route unshielded cables carefully in order to avoid noise sources such as fluorescent
lights.
•
Cable connectors should be tightly sealed and secured.
•
It is recommended that the controller be switched off while cables are being inserted or
removed.
ATTENTION!! Before connecting the communication cables, turn off the power to the
3494 unit and to the modem and unplug the power cables from the outlets.
2