Airspan Communications 365T SCRT User Manual

Airspan Communications Limited SCRT

Contents

User Manual

            IP-based  Broadband Wireless Access (BWA) System   605-0000-836 Rev B draft    HiperMAXHiperMAXHiperMAXHiperMAX     Technical User's Guide  HiperMAX Physical Installation - Masthead  Equipment                               The Innovation Behind Broadband Wireless Connecting the World
 iii Table Of Contents Physical Installation - Masthead Equipment........................................................................1 Warnings and Cautions...........................................................................................1 SAFETY .............................................................................................................1 WARNING - HAZARDOUS VOLTAGES......................................................................1 European Directive 1999/519/EC...........................................................................1 SCRT 365T use in USA.........................................................................................2 SCRT.........................................................................................................................3 Introduction..........................................................................................................3 SCRT ................................................................................................................3 WiMAX Antennas.................................................................................................3 GPS Antenna ......................................................................................................3 DC Power Feed Lightning Surge Protection..............................................................3 Physical.............................................................................................................3 Interfaces ..........................................................................................................4 SCRT Installation ................................................................................................4 The SCRT installation kits:....................................................................................6 Installation Requirements SCRT ...............................................................................9 Tools Required....................................................................................................9 SCRT Installation Parts and Kits ............................................................................9 SCRT Installation with front mounting antenna - Pole Mounted ...................................12 Mounting the Antenna ....................................................................................... 12 SCRT Installation Pole Mount  with independent Antenna ...........................................17 Mounting the Antenna ....................................................................................... 17 SCRT Installation Plate Mount................................................................................ 20 SCRT Connections................................................................................................ 22 Mating Torques................................................................................................. 22 Power Input - HiperMAX-Micro ............................................................................ 22 Power Input - HiperMAX..................................................................................... 22 Optic Interface ................................................................................................. 23 Antenna RF Port................................................................................................ 23 Protective Earth Connection................................................................................24 48V DC Cabling ................................................................................................... 25 Cables to SCRTs Connectorised Both Ends  – For Use With HiperMAX-Micro ............... 25 Cables to SCRTs  Connectorised One End  – For use with HiperMAX.......................... 25 GPS ........................................................................................................................ 26 GPS Antenna Installation ...................................................................................... 26 HiperMAX-micro................................................................................................ 26 HiperMAX- ATCA ...............................................................................................26 Lightning Protection .............................................................................................28 Equipment Protection ........................................................................................ 28 SCRT Power Protection (LPK-SCRT-PWR-1) ...........................................................28
 1 Physical Installation - Masthead Equipment Warnings and Cautions SAFETY 1. Read and follow all warning notices and instructions marked on the product or included in this manual 2. When installed in the final configuration, the product must comply with the applicable safety standards and regulatory requirements of the country in which it is installed. If necessary, consult with the appropriate regulatory agencies and inspection authorities to ensure compliance. 3. Ascertain the radiation hazards when working in an environment close to other antennas and electromagnetic fields. e.g. working on towers with other microwave transmitters etc and act accordingly.    Hard hats and harnesses and safety shoes should be worn when installing masthead equipment and antenna Beware of overhead power cables when installing antenna         Use manual handling techniques when lifting heavy objects WARNING - HAZARDOUS VOLTAGES 1. On AC installations, hazardous voltages exist. Use caution when verifying or working with AC power. Remove metal jewellery that could come into contact with AC power. 2. On DC sections, short circuiting the low voltage, low impedance circuits can cause severe arcing that may result in burns or eye damage. Remove rings, watches etc. to avoid shorting DC circuits.  NOTES 1. Airspan products do not contain hazardous substances (as defined in UK ‘Control of Substances Hazardous to Health Regulations 1989’, and the ‘Dangerous Substances Regulations 1990’). At the end of any Airspan product’s life cycle, the customer should consult with Airspan to ensure that the product is disposed of in conformance with the relevant regulatory requirements 2.   CAUTION: any modifications to this device not expressly authorised by the manufacturer could void the user's authority to operate this device.  European Directive 1999/519/EC  European Directive 1999/519/EC details basic restrictions and reference levels on human exposure to electromagnetic fields as advised by the ICNIRP. The directive states that adherence to these recommended restrictions and reference levels should provide a high level of protection as regards the established health effects that may result from exposure to such fields. Standards EN50383 and EN50385 are the applicable harmonised standards for EM fields generated by fixed wireless equipment.
605-0000-836 HiperMAX Physical Installation - Masthead Equipment Rev A 2 All  Airspan WiMAX antennas operating in the frequency range 3.4 to 3.7 GHz comply with the ICNIRP exposure guidelines at a separation distance of 0.95m from the Antenna Unit. All Airspan Communications WiMAX antennas operating in the frequency range 4.9 to 5.0 GHz comply with the ICNIRP exposure guidelines at a separation distance of 0.34m from the Antenna Unit.  The safe distance from a non-approved antenna of length D and Sector Angle δ is the higher of the two values calculated using the formula: Safe distance,   Where S is the maximum permitted flux density of 10 W/m^2 and P is the maximum transmit power of the SCRT in watts. Verify the location and properties of all devices radiating on the roof/tower and arrange switching off of any which will potentially cause harm.  SCRT 365T use in USA The 365TDD SCRT is certified for use from 3650 – 3700 MHz, operating in 5MHz and 10 MHz channel bandwidths. The maximum permitted antenna port powers when used with a Omni-directional antenna with gain of 7dBi, are: • 29dBm for 5 MHz bandwidth • 32 dBm for 10 MHz bandwidth When used with antennas with gain > 7dBi, the transmit power of the SCRT must be reduced by 1dB for each additional dB in antenna gain above 7dBi.  The maximum permitted exposure level for the SCRT is given by: S = EIRP/4 π R2 Where:   Maximum Permitted Power Density, S = 1mW/cm2 = 10W/m2   EIRP = Maximum Antenna Transmit Power, P of 32 dBm + 7dBi Antenna gain            = 39dB or 7.943 W   And R is distance from antenna  Safe distance from Antenna is therefore given by:           R= √ (EIRP/4 πS) = √ (7.943/(4 * 3.14158 * 10)     = 0.25m
Physical Installation - Masthead Equipment 3 SCRT Introduction This document covers the installation of masthead equipment for both the HiperMAX and HiperMAX-micro systems of the SCRT , associated antennas, GPS and surge protection SCRT The Single Channel Radio Transceiver (SCRT) is housed in a masthead unit that forms the remote radio head of the HiperMAX\HipermaxMicro system. Several antenna and mounting arrangements are available for the SCRT, including a front mounting antenna. Alternatively independently mounted antennas may be used. The SCRT can be pole mounted or plate mounted using the appropriate installation kit. The SCRT requires a solar shield to protect the electronics from elevated temperatures, and various configurations are available depending on which mounting method and which antenna arrangement is used WiMAX Antennas Standard system configurations utilise a compact vertically polarised sector antenna which mounts and connects directly to the SCRT. Independently mounted antennas can also be accommodated. Antennas are available for a range of frequency bands and sector angles. For more details see the Airspan Product Catalog 005-8404-000 GPS Antenna HiperMAX-micros that have the GPS option have a GPS antenna and four metres of cable included.  HiperMAX requires the antenna to be mounted on the mast or a rooftop and cabled to the GPS shelf in the ATCA rack. The first consideration for a GPS antenna is a clear view of the sky, preferably 360 degrees. In the usual installation, the GPS antenna is located low and close to the equipment building roof or mast.  DC Power Feed Lightning Surge Protection The DC feed should  be protected against lightning surges as the antenna ends. For the HiperMAX-micros protection also has to be provided at the SDR. For HiperMAX protection also has to be provided at the building entry. For more details see the Airspan Product Catalog 005-8404-000 The sections below provide list the main characteristics of the unit. Physical  Height (mm)  Width (mm)  Depth (mm)  Weight (kg) SCRT (excl bracket and Antenna): 340  270  140mm  6.5kg typical 6.5kg max WiMAX Antenna 650  200(226 inc Bracket) 100mm  1.3kg max GPS Antenna  55mm    89mm  254mm  0.15kg DC power feed lightning surge protection 115mm  90mm  55mm  0.2kg
605-0000-836 HiperMAX Physical Installation - Masthead Equipment Rev A 4 Interfaces The following interfaces are provided on the SCRT: Port Name  Description Power Input  Nominal -48V DC power input. Note that the SCRT operational voltage range is nominally -40.5V to -57.5V and  power consumption is typically 50-60Watts per SCRT. Connector type : Weatherproof Proprietary Connection, compatible with connector supplied as part of pre-terminated power cable assembly from Airspan. Power cables for HiperMAX-micro are connectorised at both ends and are available in 3, 10, 30 and 100 metre lengths. Power cables for HiperMAX are connectorised at the SCRT end only and are available in 30 and 100 metre lengths. Optical Port  The SDR & Masthead Transceiver are connected via a 2 channel multimode fibre interconnect in accordance with the OBSAI standard.  Connector type: Outdoor Connector (ODC) supplied as part of pre-terminated fibre assemblies. The outdoor fibre interconnect is common to both HiperMAXand HiperMAX-Micro is available in 3, 10, 30 and 100 metre lengths. RF Port   50 Ohm RF connector for external antenna.  Connector type N-type  Earth Stud  Each unit is fitted with an earth stud (M6 Posi-drive screw)  SCRT Installation The SCRT can be used either with an antenna mounted on the front of the SCRT or with a remotely attached RF antenna. The SCRT can also be pole mounted or plate mounted. The SCRT requires a solar shield to protect the electronics from elevated temperatures, and various configurations are available depending on which mounting method and which antenna arrangement is used. Specifically the following kits are currently available: 1. Mounting kit and direct mounting antenna for pole mounting 2. Installation kit for independently mounted antenna and pole mounted SCRT 3. Installation kit for independently mounted antenna and plate mounted SCRT Other kits may be made available to cater for other mounting arrangements. Note that the SCRT and the mounting kits are generally supplied as two separate boxes (except for the 4.9gHz SCRT). Each SCRT connects to an SDR base-band unit using an optical fibre cable. Depending on the type of SDR unit in use, the cable termination at the SDR end may differ (different terminations for SDR-Micro and SDR-ATCA).  Each SCRT also requires 48volt power which is supplied from the SDR-Micro or an alternative power supply when the HipexMAX-SDR (ATCA version) is used. Surge protection kits are also available for added protection for HiperMAX installations.
Physical Installation - Masthead Equipment 5 Note: For pole mounted installation, the SCRT requires a 40-45cm pole diameter. The pole should be made of galvanised steel and must be earthed to ensure that a discharge path is available for lightning surges. In cases where the pole is painted or made of other materials or where the pole is not earthed, a substantial lightning conduction strap must be fitted to the earth terminal of the SCRT. Similarly for plate mounting installations, the installer must ensure that  good earth is available to the SCRT. If the plate if not earthed or is painted, then a lightning conduction strap must be fitted to the SCRT.
605-0000-836 HiperMAX Physical Installation - Masthead Equipment Rev A 6 The SCRT installation kits: Three installation kits are currently available and these are briefly described below: Installation kit for SCRT with a front mounted antenna: The figure below shows an SCRT with a front mounted antenna. Note that in this arrangement only a rear mounting sunshield is required.     This corresponding kit is structured as follows:
Physical Installation - Masthead Equipment 7 Installation kit for independently mounted antenna - pole mounting: The picture below shows a view of the SCRT when used with an independently mounted antenna. Note that in this case, both a front mounting and a rear mounting sunshield are required.   This corresponding kit is structured as follows:
605-0000-836 HiperMAX Physical Installation - Masthead Equipment Rev A 8 Installation kit for independently mounted antenna - plate mounting: The picture below shows a view of a plate mounted SCRT when used with an independent antenna. Note that in this case, only a front mounting sunshield is required.  This corresponding kit is structured as follows:
Physical Installation - Masthead Equipment 9 Installation Requirements SCRT Tools Required Tool Large Crosshead Screw driver Phillips # 3 or Pozidrive # 3 Small flat blade Screwdriver 13mm or 1/2" open ended Spanner" 10mm or 13/32" open ended Spanner Wire strippers Wire cutters Ring terminals crimp tool  SCRT Installation Parts and Kits In order to install an SCRT the following parts may be required (see earlier sections for regarding structure of installation kits). Installation  Parts SCRT Installation Kit  Mount per SCRT consisting of: Notes 1x SCRT Unit   1 x Antenna with Mounting Brackets If remote antenna is used feeder is required see details below 1x Rear Sunshield   1 Front Sunshield  Remote Antenna only Not required when SCRT mounted antenna is used SCRT Installation Kit  See below for details Connecting Cables  See below for details Surge Protector  See below for details SCRT Basestation RF Other installation parts  Not provided by Airspan. See below for details
605-0000-836 HiperMAX Physical Installation - Masthead Equipment Rev A 10 SCRT Pole Mounting Installation Kit This kit is shown in the picture below:  The content of the kit as shown below SCRT Installation Kit - Pole Mounting (1) Reference   1  Packing 2/3  1* Bracket (2Part) 4  2* U-Bolts with Nuts and Washers 5  1* M8x85mm Bolt: 1* M8 Nut: 1* M8 washer (for bracket) 6  8* M5 Flat Washers: 8* M5 Spring Washers: 8* M5X16mm Screws  (see note) 7  4* M6 Flat Washers: 4* M6 Spring Washers: 4* M6X16mm Screws  (for bracket)  8  4* M3 Flat Washers: 4* M3 Spring Washers: 4* M3X8mm Screws  (for sunshield) (see note) Item 8 is surplus when antenna is fitted to SCRT Note : 4 of item 6 are surplus when remote antenna is used  Installation Kit /Part SCRT Installation Kit Bracket Mount per SCRT consisting of: Note 1x Fibre  Available in 3, 10, 30  and 100 Metre lengths Connecting Cables 1x Power  Power cables for HiperMAX-micro are connectorised at both ends and are available in 3, 10, 30 and 100 metre lengths. Power cables for HiperMAX are connectorised at the SCRT end only and are available in 30 and 100 metre lengths.  Installation Kit /Part Note Surge Protection  LPK-SCRT-PWR-1:  SCRT Power Lightning Protection Kit - consisting of 1x 48V surge arrestor
Physical Installation - Masthead Equipment 11  Installation Kit /Part Note Antenna. See Airspan Antenna and Feeder guide Antenna/Feeder Note: These are not always provided by Airspan Short Feeder 1-2Metres  Additional Items (not provided by Airspan) Cable ties Self Amalgamating  Tape (15cms x 20mm recommended) Mounting Pole
605-0000-836 HiperMAX Physical Installation - Masthead Equipment Rev A 12  SCRT Installation with front mounting antenna - Pole Mounted The installation instructions below should be followed when a front mounting antenna is supplied. Mounting the Antenna 1. The antenna is already fitted with its brackets as per the view below.    2. Fix the rear sun shield to the SCRT using the four M6 screws provided.  3. Place the SCRT on a flat surface with the RF connector facing up.
Physical Installation - Masthead Equipment 13  4. Place the antenna on top of the SCRT so that the RF connector on the antenna mates with the RF connector on the SCRT. 5. Loosely turn two screws with spring and flat washers through the brackets on the side furthest from the RF connector. This is to position the bracket but still allow the antenna to be moved away from the SCRT to allow access to the RF connector during assembly   6. Tighten the RF connector clockwise using the fingers. 7. Take a piece of self amalgamating tape about 5" long and weather seal the connector and cable. Stretch the tape when applying in order to obtain the best seal. Ensure the cable and connector are sealed as shown below.
605-0000-836 HiperMAX Physical Installation - Masthead Equipment Rev A 14  8. Using the screws provided secure all the antenna brackets to the SCRT using a Pozi-drive screwdriver. 9. Flip the unit over and fix the part of the pole mount bracket shown below to the SCRT   10. Fix the other half of the pole mount bracket to the pole as shown below using the two U bolts, nuts washers and spring washers provided.
Physical Installation - Masthead Equipment 15 11. Join together the two halves of the bracket and clamp with the Nut, Bolt, and Locking washers provided. The part of the bracket connected to the SCRT is designed to locate in the head of the bolt and stop it rotating. This allows the SCRT to be Vertically aligned. Horizontal alignment is achieved by loosening the U-Bolts slightly and rotating around the pole.  The picture below shows the SCRT installed
605-0000-836 HiperMAX Physical Installation - Masthead Equipment Rev A 16 12. Following alignment ensure all nuts are fully tightened. 13. Attach the fibre and DC cables to the connectors at the base of the unit.  The picture below shows a completed installation.
Physical Installation - Masthead Equipment 17   SCRT Installation Pole Mount  with independent Antenna The installation instructions below should be followed when the SCRT is to be pole mounted and connect to an independently mounted antenna. Mounting the Antenna 1. Place the SCRT on a flat surface with the RF connector facing up 2. Fix the sun shield (front) to the SCRT using the four M3 screws provided   3. Turn over and fix sun shield (rear) to the SCRT using the four M6 screws provided  4. Using the screws provided secure the brackets to the SCRT using a Pozi-drive screwdriver.
605-0000-836 HiperMAX Physical Installation - Masthead Equipment Rev A 18   5. Fix the other half of the pole mount bracket to the pole as shown below using the two U bolts, nuts washers and spring washers provided.  6. Join together the two halves of the bracket and clamp with the Nut, Bolt, and Locking washers provided. The part of the bracket connected to the SCRT is designed to locate in the head of the bolt and stop it rotating. This allows the SCRT to be Vertically aligned. Horizontal alignment is achieved by loosening the U-Bolts slightly and rotating around  the pole.
Physical Installation - Masthead Equipment 19   7. Attach the Antenna feeder cable to the RF connector. Take a piece of self amalgamating tape about 5" long and weather seal the connector and cable. Stretch the tape when applying to obtain the best seal. Ensure the cable and connector are sealed 8. Attach the fibre and DC cables to the connectors at the base of the unit. The picture below shows a completed installation.
605-0000-836 HiperMAX Physical Installation - Masthead Equipment Rev A 20 SCRT Installation Plate Mount The SCRT can be mounted to a plate by screwing into the back through the metal plate. The SCRT should be mounted so that the power and optic connectors are facing down.   A plate should be provided for fixing the SCRT to the approximate dimensions below and drilled as shown Note that the plate must be earthed. To prevent corrosion it is recommended that the plate is made of galvanised steel.  1. Place the SCRT on a flat surface with the RF connector facing up 2. Fix the sun shield (front) to the SCRT using the four M5 screws provided    3. Fix the SCRT to the plate using the fixing holes as indicated below
Physical Installation - Masthead Equipment 21   Note: This method is only suitable when using an external antenna.  For systems where the antenna is attached to the SCRT (i.e.3.5GHz versions) the antenna should be pole mounted to allow for antenna panning to the base station.
605-0000-836 HiperMAX Physical Installation - Masthead Equipment Rev A 22 SCRT Connections   Mating Torques 48V Connectors  300N.cm OBSAI Connectors 100N.cm  Power Input - HiperMAX-Micro Each SCRT is provided with a 48 volt power cable terminated with a female connector at the SCRT end and a male connector at the other. The termination details for the SDR-micro are shown in the relevant installation manual. Power Input - HiperMAX Each SCRT is provided with a 48 volt power cable terminated with a female connector at the SCRT end and bare wires at the other. The termination details for the -48v supply are shown in the relevant installation manual.   Important Note: The female connector attaches to the SCRT and the male connector attaches to the SDR-micro. It is important that the power connector is attached at the correct end. See illustration below or damage to the connector/equipment will result.
Physical Installation - Masthead Equipment 23   Power connector cable termination for SCRT end    Optic Interface  When running cables care should be taken not to exceed a force of 800N on the cable or connector. Do not kink cable or bend over sharp edges.  Each SCRT is connected with an optical fibre cable, ready terminated with  optical connectors. Unscrew the protective dust cap and screw the fibre optic cable in place. Only remove the cap prior to installation and never leave the optical interface open without a protection cap. Tighten to 1Nm using a calibrated torque wrench. Never exceed 2Nm as the optical interface may be damaged causing excess losses  Antenna RF Port  RF feeder connector: N-Type Female: Impedance: 50ohms: Minimum In-band Return Loss:15dB.
605-0000-836 HiperMAX Physical Installation - Masthead Equipment Rev A 24  Protective Earth Connection A screw terminal is provided on the SCRT for bonding the SCRT to a protective earth.
Physical Installation - Masthead Equipment 25 48V DC Cabling Operational voltage range: -40.5V to -57.0V. Abnormal operation (without damage): 0 to -40.5V and -57.5 to -60V (SCRT will operate down to -39volts with reduced brown out margin) Cables to SCRTs Connectorised Both Ends  – For Use With HiperMAX-Micro Procedure for terminating the DC supply for the SCRT at the SDR-Micro -48v DC source when using connectorised DC cable part numbers PWR-XX-INST-1 (where xx is cable length metres) 1. Run cable from the SCRT to the SDR-Micro The picture below shows the SDR end.  SDR END 2. Connect the cable at the SCRT 3. Connect the cable at the SDR-Micro 4. Do not apply power to the SCRT until the commissioning stage. Cables to SCRTs  Connectorised One End  – For use with HiperMAX 1. Run cable from the SCRT to the DC source breakers. (The SCRT end is the connectorised end) SCRT END 2. Connect the cable at the SCRT 3. Connect to the 48V DC Source distribution panel as follows POLARITY   COLOUR  PIN  -48v  Blue      2 Return  Black     1
605-0000-836 HiperMAX Physical Installation - Masthead Equipment Rev A 26 GPS GPS Antenna Installation  HiperMAX-micro SDRs that have the GPS option have a GPS antenna and four metres of cable included.   The first consideration for a GPS antenna is a clear view of the sky, preferably 360 degrees. In the usual installation, the GPS antenna is located low and close to the equipment building roof. The GPS antenna should be attached to a suitable mast and connected to the SDR.  Use the guidance below to find the optimal position for mounting the GPS antenna a) The antenna must be mounted in an upward position.  b) The antenna should be installed at the highest possible point available at the site. This is to ensure minimum obstruction from  any surrounding obstacles (trees, buildings or other installations, etc.).  c) To avoid influence of reflected waves, the antenna must not be installed less than 2m away from metallic objects with a dimension greater then 20 cm.  d) Antenna installation should be avoided in close proximity with other receivers or transmitters likely to cause interference.  e) The antenna should be positioned to minimise the risk of a lightning strike. See Lightning Protection Overview for guidance on placement. f) The antenna should be placed within 4 metres of the SDR. HiperMAX- ATCA The first consideration for a GPS antenna is a clear view of the sky, preferably 360 degrees. The GPS antenna should be attached to a suitable mast.  Use the guidance below to find the optimal position for mounting the GPS antenna a) The antenna must be mounted in an upward position.  b) The antenna should be installed at the highest possible point available at the site. This is to ensure minimum obstruction from  any surrounding obstacles (trees, buildings or other installations, etc.).  c) To avoid influence of reflected waves, the antenna must not be installed less than 2m away from metallic objects with a dimension greater then 20 cm.  d) Antenna installation should be avoided in close proximity with other receivers or transmitters likely to cause interference.  e) The antenna should be positioned to minimise the risk of a lightning strike. See Lightning Protection Overview for guidance on placement. f) The antenna feed should be protected at the building entry using a surge arrestor.
Physical Installation - Masthead Equipment 27 Mounting The Antenna The GPS antenna bracket is mounted on a Pole up to 40mm (1.5"). The Antenna screws on to the 25m threaded tube.  1. The RJ58 antenna cable is provided with a TNC connector attached at each end. Run the cable from the SDR-micro or HiperMAX GPS receiver to the location of the GPS antenna. 2. Thread the TNC connector cable through the threaded tube on the bracket and attach the TNC connector to the Antenna. 3. Connect the tube to the antenna by holding the antenna firm and rotating the bracket around the cable until the Thread is fully engaged in the threaded part of the antenna. 4. Connect the bracket to the pole using the two U bolts and tightening with a 10mm spanner.
605-0000-836 HiperMAX Physical Installation - Masthead Equipment Rev A 28  Lightning Protection For general information on lightning protection see 605-0000-833 Base Station Site Prerequisites  Extreme care is to be taken to ensure excellent earth connections are available.   Equipment Protection Airspan supplies optional surge protection kits for use with HiperMAX. These are generally only installed in geographies where lightning strikes are very common, ie. High risk areas. The available kits are as follows:   LPK-SCRT-PWR-1:  SCRT Power Lightning Protection Kit - consisting of 1x 48V surge arrestor This section details the site requirements for installing these optional surge protection kits. SCRT Power Protection (LPK-SCRT-PWR-1) The SCRT power protection kit provides surge protection for the 48V DC power supply input of the SCRT. . Kit Description: 2 off DC surge arrestors in weatherised enclosures Positioning Recommendations: HiperMAX: 1. As close to the SCRT as possible.          2. At the Building Entry HiperMAX-micro: 1. As close to the SCRT as possible.                   2. As close to the SCR as possible. Mounting Requirements: Pole Mount 1. Remove the top of the case (4* M4 countersunk screws) and secure the flat studded plate to the rear of the enclosure with M4 pozidrive screws, nuts and shake proof washers. (8mm spanner required). 2. Attach the clip bracket to the studs on the plate using M5 nuts and shake proof washers. (10mm spanner required)
Physical Installation - Masthead Equipment 29 3. Thread the pole clip through the bracket as shown below.  4. Orientate the enclosure so that the protected end is closest to the equipment.  Pass the clip around the pole and tighten to the pole using the captive screw on the clip.  Wiring Now connect the 48volt power cable using the following procedure. 1. Screw the protection module into the box (position 4). Ensure that the surge and output ends of the board are correctly orientated.  2. Pass the cable ends through the rubber grommets and terminate the surge and protected cables on to the module as follows. (refer to lid) o White or blue to +/-.  o Black to GND
605-0000-836 HiperMAX Physical Installation - Masthead Equipment Rev A 30  3. Tighten the Glands around the cable to provide a good environmental seal. 4. Screw the lid into place with the four M4 countersunk screws ensuring the rubber weather seal is located in its groove.
 31             How to find out more  about  Airspan products  and solutions    Airspan has offices in the following countries:  Europe Czech Republic Poland Russia United Kingdom  Africa South Africa  Americas United States  Asia Pacific Australia China Indonesia Japan New Zealand For more information about Airspan, its products and solutions, please visit our Web site:  www.airspan.com  Or write to us at one of the addresses below.  We will be delighted to send you additional information on any of our products and their applications around the world.  Worldwide Headquarters: Airspan Networks Inc. 777 Yamato Road, Suite 105 Boca Raton, Florida 33431-4408  USA  Tel: +1 561 893 8670 Fax: +1 561 893 8671 Main Operations: Airspan Communications Ltd. Cambridge House, Oxford Road, Uxbridge, Middlesex UB8 1UN UK  Tel: +44 (0) 1895 467 100

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