User Manual

AS4000 Release3 and Release 4 Central
Terminal Installation and Commissioning
DLP-005
605-0000-432
Issue 1.3a Date 18th October 1999
Page 2 of 4
Cable entry into
the top of the rack
Cable hole to
feed the cables
down the front
of the rack
Cables feed through
to the backplane
Ferrites placed on the
cables outside the entry
point to the shelf
ACC
Airspan
Figure 14. AS4000 Release 3 Rack Cable Runs
Connect the 2Mbit/s ports on the DDF to the 2Mbit/s IN (SK16 - BNC or PL7 - Type
43) and 2Mbit/s OUT (SK15 - BNC or PL8 - Type 43) connectors on Shelf Interface
Connections located at the right hand side of each Modem Shelf. See Figure 15 and
Figure 16.
Ensure that the 2Mbit/s grounding options are set. The default is for JP5, JP6 and JP7
to be fitted with links for 75Ω.unbalanced. The links are not fitted for 120Ω balanced
operation.
Ensure that the respective 2Mbit/s ports have been configured on the DDF in the
exchange.
Tie in cables as necessary using suitable cable ties, trim, leaving no sharp edges.