3480-ddc.ib.rev8.doc
page 8 of 20
17/10/2007
Installation
Operational Safety:
WARNING
Operation of electronic equipment involves the use of voltages and currents that
may be dangerous to human life. Note that under certain conditions dangerous
potentials may exist in some circuits when power controls are in the
OFF
position.
Maintenance personnel should observe all safety regulations.
Do not make any adjustments inside equipment with power
ON
unless proper
precautions are observed. All internal adjustments should only be made by suitably
qualified personnel. All operational adjustments are available externally without the
need for removing covers or use of extender cards.
Pre-Installation:
Handling:
This equipment may contain or be connected to static sensitive devices and proper static free handling precautions
should be observed.
Where individual circuit cards are stored, they should be placed in antistatic bags and proper antistatic procedures
should be followed when inserting or removing cards from these bags.
Power:
AC mains supply:
Ensure that operating voltage of unit and local supply voltage match and that correct
rating fuse is installed for local supply.
Earthing:
Particular care should be taken to ensure that the frame is connected to earth for safety reasons.
Signal earth: For safety reasons a connection is made between signal earth and chassis earth. No attempt should be
made to break this connection.
Installation in frame or chassis:
The 3400 series of modules may only be mounted in IRT’s FRU-1030 type 1 RU chassis/PSU. This chassis may
house either one or two of the cards in the series.
The rear assembly should be attached first. Power for the module is connected via a short flying lead that connects
to the inside of the rear assembly on a three pin IDC connector. This should be connected first.
The rear assembly should then be aligned with the mounting holes on the rear of the chassis taking care to ensure
that the power connection lies as flat as possible against the bottom of the chassis. The rear assembly is then fixed to
the chassis using the two M2.5 screws provided.
Before inserting the main module check that the power lead is lying flat against the chassis floor. Failure to do this
may result in the module connector being fouled by this lead. If the lead is not flat, it may be coaxed into position
by a ruler inserted through the front module opening.
The module is then inserted in the frame by gently aligning the edges of the printed circuit board into the slots in the
guide rails and pushing it home.
Final tightening of the two front securing screws ensures good mating of the module with the rear assembly. If the
module does not appear to seat properly, do not force it. Withdraw the module, check the position of the power lead
and try again.
IRT
Communications
www.irtcommunications.com
