Airspan AS4000, Installation Manual

Page: 54 / 193

Printed Documentation
50
120 Ohm Shelf Interface Connections
Run the E1 120 ohm cables from the modem shelf to the allocated positions on the
DDF/Backhaul. In partial equipped installations it may be appropriate to run sufficient cables
to cater for a complete rack of equipment. This reduces the need to disturb original installation
when adding additional equipment.
Feed the E1 cables through the top left-hand side of the rack, and down the front of the rack.
Identify and label each cable at both ends as well as the DDF/Backhaul positions.
Terminate all cables at the modem shelf end with 9 pin D-Type connectors. Terminate as
detailed in below.
Connect the E1 ports on the DDF to E1 slot 5 connectors on shelf interface connections
located on the modem shelf interface panel.
Ensure that the respective E1 ports have been configured on the DDF/Backhaul
Tie in cables as necessary using suitable cable ties, trim, leaving no sharp edges.
CT Modem Shelf interface connections to shelf interface panel 303-1111-
900