3 antenna feeder installation training(01 august 2006)

Internal 10 Sep 2006 Antenna Feeder Installation Training Course No : EQA C1—020 Composer : Engineering Quality Dept HUAWEI TECHNOLOGIES CO., LTD All rights reserved www.huawei.com Antenna Feeder Installation Flowchart HUAWEI TECHNOLOGIES CO., LTD All rights reserved Page  Installation of Antenna Feeder  Introduction to connection Components of Antenna Feeder  Installing Lightning Arrester of Indoor Feeder  Installing Outdoor Grounding Clip (Outdoor Water-Proof Measure)  Grounding Specifications of Antenna Feeder  Label Preparation Specifications of Antenna Feeder HUAWEI TECHNOLOGIES CO., LTD All rights reserved Page Introduction to Connection Components of Antenna Feeder The feeder grounding clip is used to fix the antenna on the cabling ladder or tower Feeder connectors on the top of the cabinet and antenna feeder are shown in the upper figures HUAWEI TECHNOLOGIES CO., LTD All rights reserved Page Introduction to Connection Components of Antenna Feeder Antenna lightning arrester BTS cable label Waterproof plaster HUAWEI TECHNOLOGIES CO., LTD Feeder connector All rights reserved Page Introduction to Connection Components of Antenna Feeder Feeder grounding clip components Grounding layer copper skin Jumper connection components Peel off the skin does not too long, HUAWEI TECHNOLOGIES CO., LTD All rights reserved Page Key Points for Antenna Installation  When installing the antenna, ensure that:  The azimuth and tilt angle of the antenna are consistent with the design  The antenna connection and the sector configuration are correct  Indices of the BTS calibration test and sensitivity test meet the requirements  The antenna falls into the 30° protection range of the lightning protection  The connection between the antenna support and the iron tower, and the connection between the antenna and the antenna support are reliable  The omni-directional antenna is vertical, with error less than ±2°  The azimuth error of the directional antenna is less than ±5°, and the down tilt error is less than ±0.5°  The GPS/GLONASS antenna support is fastened reliably The field angle of the antenna is 90° and there is no obstacle around  The top of omni-directional antenna jacket is in flush with the support or a bit higher than the top of the support HUAWEI TECHNOLOGIES CO., LTD All rights reserved Page Key Points for Routing the Antenna Feeder  Bind the jumper connecting with the antenna to the steel frame on the tower along the cross bar of the support  Reserve a certain margin when you trim off the cable ties outside the cabinet  The spacing between the feeder fixing clips must be even All clips face the same direction The clips must be reliable fixed  Do not interlace the feeders The feeders must be straight and in order The bending radius must be consistent  When bending down the feeder on the roof along the wall, the part in contact with the edge of the wall should install the protection tube  The minimum bending radius of the feeder must be equal to or larger than 20 times of the feeder diameter  The feeder is not folded or twisted No copper wire is exposed out of the feeder HUAWEI TECHNOLOGIES CO., LTD All rights reserved Page Routing the Antenna Feeder on the Mast or Tower The antenna feeder must be straight and not interlaced You need to fix the feeder at an even interval and prepare connectors in compliance with the specifications You also need to apply water-proof measures to the outdoor grounding part and connectors HUAWEI TECHNOLOGIES CO., LTD All rights reserved Page Installing Outdoor Grounding Clip (Outdoor WaterProof Measure)  Make a waterproof curve before leading the jumper into the cabinet or leading the jumper out of the feeder window  Take the lighting protection grounding measure for the lightning arrester of GSM macro BTSs After the grounding cables are gathered, connect them to the protection grounding bar outside the equipment room  Directly and reliably fix the feeder grounding clip to the steel bar of the nearby tower Prepare the feeder grounding clip in compliance with the specifications Apply anti-rust, erosion-proof and water-proof measures to the connection of grounding clip  The grounding cable of feeder clips should extend from up to down The angle between the grounding cable and the feeder cable should not be more than 15 degrees  If the tower is more than 60 meters tall, add one feeder grounding clip to the feeder in the middle of the tower HUAWEI TECHNOLOGIES CO., LTD All rights reserved Page 10 Installing Outdoor Grounding Clip (Outdoor WaterProof Measure)  After the feeder leaves the tower, lay the feeder on the roof (or cabling rack) for a certain distance before leading the feeder into the equipment room If this distance exceeds 20 meters, add one lightning grounding clip on the roof (or cabling rack)  When routing the feeder from the tower top to the equipment room, ground the feeder at three points which fall into the following ranges: one meter after the feeder leaves the platform of the tower, one meter ahead of the outdoor cabling rack after the feeder leaves the tower, and one meter away from the feeder window Bundle the feeder reliably at the grounding point and apply water-proof measures  If the feeder is less than 10 meters, ground the feeder at a point only  Avoid contact between the connector of the feeder or lightning arrester and the cabling rack HUAWEI TECHNOLOGIES CO., LTD All rights reserved Page 11 Introduction to Grounding Clip of Antenna Feeder Fix and fasten the grounding clip Wind the first-layer of the waterproof plaster opposite from the direction of feeder routing The waterproof wound completed HUAWEI TECHNOLOGIES CO., LTD All rights reserved Page 12 Preparing the Feeder Grounding Clip Wind the secondly -layer of the tape opposite to the direction of feeder routing Fix the grounding cable on the cabling Rack and fasten the screws HUAWEI TECHNOLOGIES CO., LTD All rights reserved Page 13 Preparing the Feeder Grounding Clip  Feeder grounding clip installation specification — Winding the tape on the grounding clip  Wind the tape from bottom upward layer by layer, and then from top downward, and finally from bottom up  The upper layer of the tape should cover about one third of the lower layer HUAWEI TECHNOLOGIES CO., LTD All rights reserved Page 14 Grounding the Feeder when Routing the Feeder Outdoors Ground the feeder one to within one to two meters under the antenna Feeder must be grounded on the iron tower If the feeder is routed on the mast, you can only ground the feeder at the bottom of the mast because you cannot install a fixing grounding clip on the mast In practice, you need to ground the feeder according to the field characteristics HUAWEI TECHNOLOGIES CO., LTD After the feeder leaves the tower, add the grounding point when the distance exceeds 20 meters One grounding point After the feeder leaves the mast All rights reserved Page 15 Grounding the Feeder Within One Meter Away from the Equipment Room Ground the feeder within one meter away from the equipment room HUAWEI TECHNOLOGIES CO., LTD All rights reserved Page 16 Make a water-proof curve before leading the feeder into the equipment room Seal the feeder window properly Reserve an appropriate margin on the cable tie Make a water-proof curve properly Seal the feeder window properly  Reserve an appropriate margin on the outdoor cable tie of the feeder HUAWEI TECHNOLOGIES CO., LTD All rights reserved Page 17 Installing Feeder Tube Clips Use the feeder tube clips to fix the feeder on the cabling ladder and tower When the antenna is installed on the mast, it is not convenient to use the feeder tube clip for fastening In this case, directly use cable ties to fix the feeder and reserve an appropriate margin on the cable tie HUAWEI TECHNOLOGIES CO., LTD All rights reserved Page 18 Installing and Bundling Feeders inside the Cabinet Bundle the RF cables with appropriate tightness Do not make too tight, in the case, the feeder is damaged Meanwhile, fasten the RF connectors and cover the RF connectors not in use with protection caps No RF connectors can be exposed HUAWEI TECHNOLOGIES CO., LTD All rights reserved Page 19 Grounding Feeder Lightning Arrester The grounding point of the feeder lightning arrester must be reliably connected Meanwhile, avoid direct contact between the lightning arrester with the cabling ladder Insulation measures are recommended (You can either use the insulation tape or the feeder skin for insulation purpose.) HUAWEI TECHNOLOGIES CO., LTD All rights reserved Page 20 Installing Feeders on the Cabinet Top Secure the connection between the feeder connector and cabinet top After the antenna connector is ready, use the heat-shrinkable tube to coat the connector The heat-shrinkable tube be agreeable in appearance and uniformed in specifications All connecting screws must be fastened HUAWEI TECHNOLOGIES CO., LTD All rights reserved Page 21 Effect after the Outdoor iSite Installation is Completed Installation of iSite involves the following devices: iSite, lightning arrester, cable distribution cabinet, and power supply equipment The length of iSite antenna feeder is normally less than 10 meters Thus, the flexible antenna is often used and only one point is grounded You must ensure that the grounding is reliable HUAWEI TECHNOLOGIES CO., LTD All rights reserved Page 22 Preparing Feeder Labels Feeder labels are generally required at several points: under the antenna, below the tower, at the entrance to the equipment room, at the connection point of the lightning arrester, and on the top of the cabinet Generally, places where labels are attached and the label directions must be consistent on different types of cables HUAWEI TECHNOLOGIES CO., LTD All rights reserved Page 23 Thank You www.huawei.com .. .Antenna Feeder Installation Flowchart HUAWEI TECHNOLOGIES CO., LTD All rights reserved Page  Installation of Antenna Feeder  Introduction to connection Components of Antenna Feeder ... Connection Components of Antenna Feeder The feeder grounding clip is used to fix the antenna on the cabling ladder or tower Feeder connectors on the top of the cabinet and antenna feeder are shown... 14 Grounding the Feeder when Routing the Feeder Outdoors Ground the feeder one to within one to two meters under the antenna Feeder must be grounded on the iron tower If the feeder is routed