Airspan Communications 365T SCRT User Manual

Airspan Communications Limited SCRT

User Manual

IP-based

Broadband Wireless Access (BWA) System

605-0000-836 Rev B draft

HiperMAX

HiperMAXHiperMAX

HiperMAX

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

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

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 R

Where:

Maximum Permitted Power Density, S = 1mW/cm

= 10W/m

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

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

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

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

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

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

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

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

Other installation parts Not provided by Airspan. See below

for details

605-0000-836 HiperMAX Physical Installation - Masthead Equipment Rev A

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Protective Earth Connection

A screw terminal is provided on the SCRT for bonding the SCRT to a protective earth.

Physical Installation - Masthead Equipment

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

OLARITY

OLOUR

-48v Blue 2

Return Black 1

605-0000-836 HiperMAX Physical Installation - Masthead Equipment Rev A

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

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

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

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)

White or blue to +/-.

Black to GND

605-0000-836 HiperMAX Physical Installation - Masthead Equipment Rev A

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.

How to find out

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

Tel: +44 (0) 1895 467 100

Airspan Communications 365T SCRT User Manual

Airspan Communications Limited SCRT

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