User Manual

AS4000 Operations and Maintenance
Section
605-0000-431
6
. Issue 1.6. Date3/2/99
DLP-020
Page 43 of 60 © Copyright Airspan Communications Corporation 1999
CRU MEASUREMENTS AND PANNING
The following procedure is used when checking CRU performance and re-aligning a
CRU.
Tools and equipment required.
ITEM DESCRIPTION SIZE
01 Combination Spanner 13mm
02 Ratchet and Socket 17mm
03 Snake Eye Screwdriver
04 Screwdriver Pozidrive No 1 x 75mm
05 Screwdriver Pozidrive No 2 x 199mm
06 Screwdriver Pozidrive No 3 x 150mm
07 Screwdriver Flat Blade 3mm x 100mm
08 Digital Multimeter Fluke 77 or similar
09 Inline Test Adapter
(connectorised CRU
only) 2 adapters are
provided per CT rack
installation.
ACC454-0000-182
19 Soft Pencil
11 Ladder - Triple Fully Extended 7metre minimum
STEP PROCEDURE
1. Connecting the In Line Breakout Cable
1. Disconnect the drop cable from the CRU. If the position of the CRU does not allow
the drop cable to be removed it may be necessary to loosen the hinge bolts on the
CRU mounting bracket. Before loosening the bolts it is necessary to mark the
alignment position of the CRU on the CRU mounting bracket. This allows it to be
returned to the original position before measurements are made.