Confidential and Proprietary Information of ZTE CORPORATION
93
Feeder Cutting
Caution:
While feeder cutting, label its both ends and stick a temporary label to the
feeder middle. Labels must be correct to get correct connections and sector
matching.
Feeder cutting varies with antenna installation position:
Roof mounted antenna feeder installation
Determine main feeder length in each sector again with a tape
measure according to actual route.
Add some margin about 0.039 inch ~ 0.078 inch ( 1 mm ~ 2 mm)
to measured lengths when cutting cables.
Attach corresponding temporary labels (such as ANT1, ANT2, ANT3,
ANT4, ANT5 and ANT6) to both main feeder ends after each cut.
Attach formal labels after feeder installation.
Tower mounted antenna feeder installation
Use a roller support, a pulley block and a hoisting rope to lift one
feeder end to the tower top. The personnel under the tower must
cut feeder sufficient length, to reach lightning arrester frame inside
equipment room. Attach a temporary label to the feeder lower part.
Attach formal label after the feeder is led into the equipment room.
To reduce working time at heights and to ensure feeder connector
installation quality, make main feeder upper connector before
hoisting it.
Jumper Installation
Make 1/2'' feeders according to specific length of each jumper. Assemble
proper feeder connectors on both feeder ends according to feeder
connector assembly instructions. Connect jumpers between lightning
arrester and rack top.
Follow procedure below to ensure connections are waterproof:
1.
Wrap connection starting from the root of the antenna joint with
waterproof adhesive tape in same direction as fastening antenna
jumper.
2.
Stretch waterproof adhesive tape and apply it layer by layer till it
reaches about 1.96 inch lower than bottom of feeder joint. Make sure
upper layer overlaps lower layer by half the width of tape.
3.
Apply PVC tape layer by layer on top of waterproof adhesive tape.
Make sure upper layer overlaps lower layer by half the width of tape.
Содержание ZXC10 CBTS O1
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