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8/10/2019 1.4 Adjust Antenna
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
Security Level:
www.huawei.com
Adjust Antenna
8/10/2019 1.4 Adjust Antenna
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CONTENT
• Basic Knowledge
• Adjustment Preparation
• Adjust Antenna (0.3&0.6m/1.2m/1.8m)
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 3
RTN different outdoor solution
New antenna+ new ODU+ new IF+ new IDU
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 4
Basic Knowledge
• Main Lobe and Side Lobe
Vertical azimuth diagram
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 5
Basic Knowledge• Locating the Main Lobe
The main lobe width of the microwave antenna is narrow, that is, between 0.6° and 3.7°
generally.
Antenna movement across the main lobe will result in a rapid rise and fall of signal level.
Horizontal section of the antenna
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 6
Basic Knowledge
• Tracking Path
Side lobe signal readings can be mistaken for main lobe readings when signals are
tracked at different elevations (or azimuths).
Several adjustments are required so that the three signal peaks of line AA' can appear.
Three tracking paths
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 7
Basic Knowledge
• Antenna Aligning
CorrectWrongWrong
The objective of antenna adjustment is
to align the main lobe of the local
antenna to the main lobe of the opposite
antenna.
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CONTENT
• Basic Knowledge
• Preparation
• Adjust Antenna (0.3&0.6m/1.2m/1.8m)
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 9
Adjustment Preparation• Tools
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 10
Adjustment Preparation• Plan Document
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 11
Adjustment Preparation
RSSI test interface
Select 20V.
• Connect multimeter with ODU RSSI Interface
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CONTENT
• Basic Knowledge
• Preparation
• Adjust Antenna (0.3/0.6m)
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 13
Adjust Antenna (Potevio 0.3/0.6m)
Prepare
Determination
of coarse
azimuth
Primary
Alignment
Fine
Alignment
Fine
Alignment
Fasten
Antenna
•
Adjustment Flowchart:
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 14
Adjust Antenna (Potevio 0.3/0.6m)
•
Determination of coarse azimuth:
If opposite antenna can be reached by eyes, we will apply eyeballing to
determine coarse azimuth.
Conversely, if opposite antenna cannot be reached by eyes, we will use acompass, according to plan design document, to confirm coarse azimuth.
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 15
Adjust Antenna (Potevio 0.3/0.6m)
•
Primary Adjustment
Appropriately loosen four nuts①
on the clamp② of the antennamounting bracket.
Push antenna softly with human
force, then the antenna can be
revolved around the mounting pipe.
Coarse azimuth adjustment:
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 16
Adjust Antenna (Potevio 0.3/0.6m)
•
Primary Adjustment
Loosen 4 screws which are used to fix antenna and pole.
Push antenna softly with human force.
Coarse azimuth adjustment:
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 17
Adjust Antenna (Potevio 0.3/0.6m)
•
Primary Adjustment
Rotate the antenna widely in the horizontal direction,scan the received power, until
multimeter test value increase, and stop at the max value (about 1V).
Coarse azimuth adjustment:
Horizontal 180°
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 18
Adjust Antenna (Potevio 0.3/0.6m)
•
Primary Adjustment
Fasten 4 screws which are used to fix antenna and pole.
Coarse azimuth adjustment:
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 19
Adjust Antenna (Potevio 0.3/0.6m)
•
Fine Adjustment
Keep the remote antenna fixed.
Slightly adjust the azimuth of the antenna, in the horizontal direction.
Fine azimuth adjustment:
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 20
Adjust Antenna (Potevio 0.3/0.6m)
•
Fine Adjustment
Scan the received power, until the multimeter reach the max value then stop.
Fasten the screws.
Fine azimuth adjustment:
Horizontal 30°
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 21
Adjust Antenna (Potevio 0.3/0.6m)
•
Fine Adjustment
Fine Elevation Adjustment
Appropriately loosen top and bottom
connecting bolts① between antenna
and mounting bracket, rotate elevation
adjusting bolt② to make the antennaelevation adjusted.
The range is±15°. Remember to
lock the above standard units.
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 22
Adjust Antenna (Potevio 0.3/0.6m)
•
Fine Adjustment
Fine Elevation Adjustment
Loosen the screws.
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 23
Adjust Antenna (Potevio 0.3/0.6m)
•
Fine Adjustment
Rotate elevation adjusting bolt to make the antenna elevation adjusted.
Scan receive power, and stop at the Max value position, then fasten local antenna.
Elevation adjusting bolt
Fine Elevation Adjustment
V er t i c al 3 0 °
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 24
Adjust Antenna (Potevio 0.3/0.6m)
•
Fine Adjustment
Adjust remote site antenna, until the received power reach the Max value.
Repeat the fine adjustment steps, until the received power value meets the planed
received value.
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 25
Adjust Antenna (Potevio 0.3/0.6m)
After antenna alignment, please confirm that every standard accessory is locked.
Attention: You should keep the received power value is Max value, while fastening the
antenna.
•
Fasten Antenna
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CONTENT
• Basic Knowledge
• Preparation
• Adjust Antenna (1.2m)
8/10/2019 1.4 Adjust Antenna
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 27
Adjust Antenna (Potevio 1.2m)
• Primary Adjustment
Coarse azimuth adjustment:
Uninstall the azimuth fine adjusting bolt
① and the connecting bolt③, and then
loosen appropriately nuts⑤ on U-bolt④
of hanging bracket and fixing screws onstrengthening rod, see figure 11.
Rotate antenna or/ strengthening rod by
human forces so that antenna could
make azimuth adjustment surrounding
mounting pipe.
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 28
Adjust Antenna (Potevio 1.2m)
• Fine Adjustment
Fine azimuth adjustment:
Move the two adjusting nuts② on fine
adjusting bolts forward and backward. If
azimuth-adjusting scale is insufficient,
customer could continue adjusting bychanging position of the anti-fall angle
iron on mounting pipe. The range of fine
adjustment is±10°.
It is necessary to fix hanging bracket with
U-bolt as changing position of the anti-
fall clamp on mounting pipe. Please locktightly all involved loosened parts
immediately after completed adjustment.
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 29
Adjust Antenna (Potevio 1.2m)
• Fine Adjustment
Fine Elevation Adjustment
Loosen the tightening elevation
adjusting bolt③ appropriately, and
then rotate the two nuts② on item①
with involved tools. The range of fine adjustment is
±10°,.
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CONTENT
• Basic Knowledge
• Preparation
• Adjust Antenna (1.8m)
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 31
Adjust Antenna (Potevio 1.8m)
• Primary Adjustment
Azimuth adjustment:
loosen appropriately the nuts on U-bolts
of hanging bracket and fixing bolts on
the adjustable rod.
By human forces, push antenna tomake it rotate around the mounting pipe,
so the azimuth adjustment is done.
Remember to lock all the standard
accessories.
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 32
Adjust Antenna (Potevio 1.8m)
• Fine Adjustment
Elevation Adjustment
loosen the two connecting angle irons①
on hanging bracket, and then rotate the
two nuts③ on elevation adjusting screw
② with a wrench. So the antenna iselevation adjusted.
The range of fine adjustment is±5°.
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 33
• Type 1: Antenna Bracket
Elevation AdjustingAzimuth Adjusting
Adjust Antenna (Potevio 1.8m)
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 34
Adjust Antenna (Potevio 1.8m)
• Type 1: Antenna Bracket
Elevation Adjusting
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 35
Adjust Antenna (Potevio 1.8m)
• Type 2: Antenna Bracket
Elevation AdjustingAzimuth Adjusting
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 36
Adjust Antenna (Potevio 1.8m)
• Type 2: Antenna Bracket
Elevation Adjusting
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 37
Adjust Antenna (Potevio 1.8m)
• Type 2: Antenna Bracket
Azimuth Adjusting
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