4007-dda.ib.rev1.doc
Page 5 of 12
15/09/2008
Installation
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. 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.
DC supply:
Ensure that the correct polarity is observed and that DC supply voltage is maintained within
the operating range specified.
Earthing:
The earth path is dependent on the type of frame selected. In every case particular care should be taken to ensure
that the frame is connected to earth for safety reasons. See frame manual for details.
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:
See details in separate manual for selected frame type.
Link Settings:
LK1 is factory set for a contact make to ground on signal failure at SK10 pin 2 on the rear panel, move LK1 from
the normally closed (N/C) to the normally open (N/O) position for a break to ground on signal or power loss.
Link LK2 closed reduces the input equalisation to 200m for use in noisy environments or when a short input cable
is used.
Digital Video Connections:
Input and outputs are 75
Ω
BNC type for connection with high quality 75
Ω
coaxial cable. Input is self-terminating.
Front Panel Indicators:
The presence of 270 Mb/s locked signal is indicated by the ‘SIGNAL PRESENT’ front panel LED (green).
The presence of the in5 Vdc supply is indicated by the front panel LED (green).