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MAINTENANCE GUIDE

www.rfsworld.com

Antenna Control Unit Maintenance Guide

10000025991 | Revision 2 | November 2021 | © Radio Frequency Systems 2021

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About RFS

Radio Frequency Systems (RFS) delivers the end-to-end RF solutions and expert services needed to evolve wireless and
broadcast networks today and tomorrow. Our cables, connectors, antenna systems and RF conditioning products are based

on more than 120 years of experience delivering cutting-edge RF solutions and industry firsts. As a result, our solutions are
recognized globally for their innovation, superior performance and unmatched quality.

As an ISO-compliant company with global operations, we bring our customers world-class engineering and manufacturing
skills backed with comprehensive local support services. Our customers know they can rely on our expertise and commitment
to excellence from initial design to final delivery and beyond — whether they’re looking to support 5G, deploy small cells,
empower smart cities or improve indoor coverage in the most challenging locations.

For more information, visit

www.rfsworld.com

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or follow us on Twitter:

www.twitter.com/RFSworld

Australia

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+86 21 3773 8888

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Summary of Contents for A20 Series

Page 1: ...Radio Frequency Systems 10000025991 Revision 2 November 2021 Radio Frequency Systems 2021 ACU MAINTENANCE GUIDE MODELS A20 X20 X20H X20 B I20 H I20 B REV 2 2021 11 ...

Page 2: ...ing an ACU on site 6 3 2 1 Replacing an ACU that belongs to the ACU A20 Family 7 3 2 2 Replacing an ACU that does NOT belong to the ACU A20 Family 8 3 3 1 Connecting the NEM to an ACU device 9 3 3 2 Configuring the ACU device 9 3 3 2 1 Preparation Step 9 3 3 2 2 Loading the Antenna Configuration Files to the ACU Device 10 3 3 2 3 Loading the Antenna Firmware Files to the ACU Device 10 3 3 3 Calibr...

Page 3: ...I20 B8 ACU X20 ACU X20H ACU X20 B5 ACU X20 B6 ACU X20 B7 ACU X20 B8 2 REQUIREMENTS The required equipment for maintaining or configuring an ACU device on site is given in Table 1 TABLE 1 EQUIPMENT LIST Item Equipment Installation Tools 1 Case 1 Replacing a defective non site sharing ACU device A new ACU device with its factory presets i e default factory settings Case 2 Upgrading the firmware of a...

Page 4: ...5 AISG cable This is used for connecting the adaptor to the AISG port IN A or IN 1 of an ACU device NOTE Never connect the AISG cable to the AISG port IN B or IN 2 of an ACU device to maintain or to configure 6 Wrenches A pair of screws allows the ACU device to be fixed on the antenna Two types of screws exist it depends on the ACU type Please refer to the Table 2 for getting the screw type for th...

Page 5: ...ring ACU Case 2 Figure 1 b the firmware of an ACU device of an antenna must be upgraded on site to take advantage of new features Case 3 Figure 1 c the hardware of a site sharing ACU device of an antenna is out of order and must be replaced on site by a new site sharing ACU Case 4 Figure 1 d the sharing profile of a static site sharing ACU device of an antenna needs to be switched to a different s...

Page 6: ... 2 parts one is the ACU A20 family 3 2 1 one for the other ACU families 3 2 2 3 2 1 Replacing an ACU that belongs to the ACU A20 Family Untighten the 2 M4 screws 2 the ACU A20 1 by using a cruciform wrench Figure 2 a Once the defective ACU has been removed check if the hexagonal mechanism 4 Figure 2 b is not locked by using a 5 mm Allen wrench Mount the new ACU to the antenna as depicted in Figure...

Page 7: ...let O highlights an ACU s panel of AISG connectors Figure 3 Location of the ACU on an antenna Remove the AISG cable s 1 Figure 4 a from the AISG connector s Untighten the 2 screws 3 Figure 4 a progressively and alternatively by maintaining the ACU through the 2 handle The type of those screws depends on the ACU model Please refer to Table 2 for using the appropriate wrench cruciform or Torx Use th...

Page 8: ...figurator listed in Table 1 item 2 This procedure applies to every ACU family and is divided into 5 steps as depicted in the flowchart in Figure 5 The ACU A20 S is chosen as an example for describing those steps NOTICE Installation and use of NEM software please refer to NEM ALD W User s Manual It is available at https www rfsworld com articles technical support nem ald w users manual Figure 5 Flo...

Page 9: ...perly connected to the ACU o If nothing is still detected replace the ACU device with a new one 3 3 2 Configuring the ACU device This step allows you to load the antenna configuration to the ACU device A preparation step 3 3 2 1 must be done before going on site it consists in recovering the antenna configuration files to upload on site to the ACU device Once done the antenna configuration can be ...

Page 10: ... file can be applied to any single RET unit and it will be applied to the entire antenna o A Reset is required to apply the new SHA file 3 3 3 Calibrating the RET Every time an acu file or a cfg file is uploaded to an ACU device or a new ACU is installed a calibration of the RET must be done in order to make the motor to record the station of the hard limits min and max If a calibration is not per...

Page 11: ...r they re looking to support 5G deploy small cells empower smart cities or improve indoor coverage in the most challenging locations For more information visit www rfsworld com or follow us on Twitter www twitter com RFSworld Australia Kilsyth 61 3 9751 8400 Technical Support Technical Support rfsworld com Latin America Sao Paulo Technical Support MTS Latam rfsworld com China Shanghai 86 21 3773 8...

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