User Manual
AS4000 Subscriber Terminal
Installation and Commissioning DLP 007
605-0000-436
Issue 1.5 Date: 18th October 1999
Page 1 of 2 1988 Airspan Communications Corporation
CABLE INSTALLATION FOR WALL MOUNT CRU.
The drop cable consists of a single 5 pair cable (25 metres) or a single 6
pair cable (80 metres) complete with environmentally protected
connector. The connector plugs into the CRU Socket mounted on the
rear plate of the CRU.
STEP PROCEDURE
Drop cable installation
1. Because the CRU is connectorised, the cable is installed starting from the CRU end
leaving the free end of the cable to be finally dressed into place and cut to length
for neat connection with the power supply unit.
2. Run the drop cable from the CRU connector block to the Junction Box/ACPSU.
Secure with 7mm cleats as required. Ensure that a drip loop is formed at the point
where the cable enters the building to avoid the ingress of water into the building.
3. The maximum drop cable distance between the CRU and the PSU must not exceed
25 metres for 5 pair cable or (80 metres) for 6 pair cable
4. The cable has a minimum bend radius of 40mm.
5. Secure the drop cable to the CRU mounting bracket using straps. Leave sufficient
slack to allow for CRU panning at the commissioning stage.
6. Plug the drop cable into the connector on the rear plate of the CRU.
7. Important Notice: Care should be taken when plugging the drop cable into the
connector on the rear plate of the CRU. The cable approaches the socket from
above. The cable socket has a polarisation key and the plug has a polarisation slot
to ensure that the connectors mate correctly. Support the cable so that the plug
does not connect to the socket at an angle. The plug must be eased into the socket
ensuring the polarisation key locates. Damage to the pins may result if the pins are
not inserted straight into the sockets or the polarisation key is not located
correctly. Ensure that the pins are fully mated before attempting to tighten the
locking ring. Tighten the locking ring using the fingers. Do not use a wrench as
over-tightening will strip the thread on the locking ring.
STOP THIS PROCEDURE IS NOW COMPLETE