sp-1820 qi 1-0-0.pdf

INSTALLATION GUIDE FOR SP-1820

SP-1820 QI Copyright - refer to title page ENU Status : 1-0-0

SP-1820 GSM1800 BANDWIDTH ADJUSTABLE

PICO REPEATER

INSTALLATION GUIDE

The information contained herein is the responsibility of and is approved by the following, to whom all enquiries should be directed in the first instance:

International Documentation Centre Comba Telecom

This is an unpublished work the copyright in which vests in Comba International ("Comba"). All rights reserved. The information contained herein is confidential and the property of Comba and is supplied without liability for errors or

omissions. No part may be reproduced, disclosed or used except as authorised by contract or other written permission. The copyright and the foregoing restriction on reproduction and use extend to all media in which the information may be embodied.



0.2 CONTENTS

Section Page

0.2 CONTENTS........................................................................................................................... 2 0.3 INDEX TO FIGURES AND TABLES ..................................................................................... 3 0.4 HISTORY............................................................................................................................... 4 0.5 ISSUE CONTROL ................................................................................................................. 5 0.6 REFERENCES ...................................................................................................................... 6 0.7 GLOSSARY OF TERMS ....................................................................................................... 7 0.8 SAFETY NOTICES AND ADMONISHMENTS ...................................................................... 8 0.9 SERVICING POLICY AND RETURN OF EQUIPMENT........................................................ 9 0.10 READERS COMMENTS ..................................................................................................... 10

1 GENERAL INFORMATION ................................................................................................. 11 1.1 SP-1820 SALEABLE ENTITIES .......................................................................................... 12

2 EQUIPMENT DESCRIPTION.............................................................................................. 13 2.1 GENERAL APPLICATION................................................................................................... 13 2.1.1 USING INTEGRATED ANTENNA....................................................................................... 13 2.1.2 USING EXTERNAL ANTENNA (OPTIONAL) ..................................................................... 13 2.2 GENERAL............................................................................................................................ 14 2.3 SP-1820 SYSTEM DIAGRAM ............................................................................................. 15 2.4 EQUIPMENT LAYOUT........................................................................................................ 16 2.5 KIT OF PARTS .................................................................................................................... 17

3 INSTALLATION ................................................................................................................... 18 3.1 WARNINGS AND ALERTS ................................................................................................. 18 3.2 SITE PLANNING CONSIDERATIONS................................................................................ 19 3.2.1 REPEATER INSTALLATION CHECKLIST ......................................................................... 20 3.2.2 ANTENNA INSTALLATION CONSIDERATION.................................................................. 20 3.3 INSTALLATION PROCEDURES......................................................................................... 21 3.3.1 GOODS INWARDS INSPECTION ...................................................................................... 21 3.3.2 TOOLS................................................................................................................................. 21 3.3.3 PREPARATION................................................................................................................... 21 3.3.4 ANTENNA CONNECTION .................................................................................................. 22 3.3.5 WALL MOUNTING .............................................................................................................. 23 3.3.6 DRIP-LOOP......................................................................................................................... 24 3.3.7 EQUIPMENT CONNECTIONS............................................................................................ 24

4 COMMISSIONING............................................................................................................... 25 4.1 MCU LED INDICATORS ..................................................................................................... 25 4.2 EQUIPMENT POWER-UP .................................................................................................. 25 4.3 DESCRIPTION OF CONTROL PANEL............................................................................... 26 4.3.1 DIP Switches ....................................................................................................................... 26 4.3.2 LCD DISPLAY...................................................................................................................... 26 4.4 PROGRAMMING THE SYSTEM......................................................................................... 27 4.4.1 EXAMPLES ......................................................................................................................... 27 4.5 MCU RESET........................................................................................................................ 28 4.6 SYSTEM COMMISSIONING............................................................................................... 29

5 SYSTEM MAINTENANCE................................................................................................... 30

6 APPENDICES...................................................................................................................... 31 6.1 APPENDIX A: TOOLS FOR INSTALLATION AND MAINTENANCE.................................. 31 6.2 APPENDIX B: RMA (RETURN MATERIAL AUTHORIZATION) FORM ............................. 32



0.3 INDEX TO FIGURES AND TABLES

Fig 1: Top, front and side Views of SP-1820 enclosure ...................................................................... 11 Fig 2: Application with Integrated antenna .......................................................................................... 13 Fig 3: Application with external antenna.............................................................................................. 13 Fig 4: SP-1820 System diagram ......................................................................................................... 15 Fig 5: SP-1820 equipment internal view.............................................................................................. 16 Fig 6: Default Integrated Antenna connection (control panel removed for clarity) .............................. 22 Fig 7: Jumper cable installed (Integrated antenna and control panel removed for clarity).................. 22 Fig 8: Mounting arrangement at the rear of the unit ........................................................................... 23 Fig 9: Alignment of mounting screws .................................................................................................. 23 Fig 10: Connecting to SP-1820 ........................................................................................................... 24 Fig 11: Location of LEDs..................................................................................................................... 25 Fig 12: Control panel layout................................................................................................................. 26 Fig 13: DIP Switch settings on the control panel (OFF and ON)......................................................... 26 Fig 14: Reset Switch and MCU area ................................................................................................... 28 Table 1: Product Part Number Explanation......................................................................................... 12 Table 2: SP-1820 KOP........................................................................................................................ 17 Table 3: Repeater Installation checklist .............................................................................................. 20 Table 4: Antenna installation checklist ................................................................................................ 20 Table 6: LEDs colour and indication.................................................................................................... 25 Table 6: numbered function and value displayed on the LCD Display................................................ 27 Table 7: Examples of parameters setting ........................................................................................... 27 Table 8: Default value of each parameter ........................................................................................... 28 Table 9: Commissioning procedures for SP-1820 .............................................................................. 29



0.4 HISTORY

Change No. ENU Details Of Change

1 1-0-0 Document created in December, 2006



0.5 ISSUE CONTROL

Date 01 Dec 06

Section All all



0.6 REFERENCES

0.6.1 SP-1820 datasheet Issue 3-0-0, released on June-07-2006

GSM1800 Bandwidth Adjustable Pico Repeater



0.7 GLOSSARY OF TERMS

Acronym Definition ALC Automatic Level Control ATT Attenuation BS Base Station BTS Base Transceiver Station CDMA Code Division Multiple Access dB Decibel dBm Decibels relative to 1 milliwatt DL Downlink DPX Duplexer DT Donor Terminal EEPROM Electrically Erasable Programmable Read Only Memory FS Frequency Selector FSA Frequency Selector Amplifier GSM Global System for Mobile Communication Hz Hertz ID Identification LNA Low Noise Amplifier MCU Main Control Unit MHz Megahertz MS Mobile Subscriber MT Mobile Terminal MTBF Mean Time Between Failures NC Normally Closed NF Noise Figure NO Normally Open OMC Operation & Maintenance Centre OMT Operation & Maintenance Terminal PA Power Amplifier PLL Phase Locked Loop PSU Power Supply Unit RF Radio Frequency SMA Sub-Miniature A Connector (coaxial cable connector type) UL Uplink VAC Volts Alternating Current VSWR Voltage Standing Wave Ratio



0.8 SAFETY NOTICES AND ADMONISHMENTS

This document contains safety notices in accordance with appropriate standards. In the interests of conformity with the territory standards for the country concerned, the equivalent territorial admonishments are also shown. Any installation, adjustment, maintenance and repair of the equipment must only be carried out by trained, authorized personnel. At all times, personnel must comply with any safety notices and instructions. Specific hazards are indicated by symbol labels on or near the affected parts of the equipment. The labels conform to international standards, are triangular in shape, and are colored black on a yellow background. An informative text label may accompany the symbol label. Hazard labeling is supplemented by safety notices in the appropriate equipment manual. These notices contain additional information on the nature of the hazard and may also specify precautions. Warning: These draw the attention of personnel to hazards which may cause death or injury to the operator or others. Examples of use are cases of high voltage, laser emission, toxic substances, point of high temperature, etc. Alert: These draw the attention of personnel to hazards which may cause damage to the equipment. An example of use is the case of static electricity hazard. Caution notices may also be used in the handbook to draw attention to matters that do not constitute a risk of causing damage to the equipment but where there is a possibility of seriously impairing its performance, e.g. by mishandling or gross maladjustment. Warnings and Cautions within the main text do not incorporate labels and may be in shortened form.



0.9 SERVICING POLICY AND RETURN OF EQUIPMENT

The repair of individual units and modules of this equipment is not considered practicable without factory facilities. It is, therefore, the policy of Comba whereby faulty units or modules are returned to the local agent for repair. To enable an efficient, prompt after sales service to be provided for the diagnosis, repair and return of any faulty equipment, please comply with the following requirements. Items to be sent for repair should be packaged so as to provide both electrostatic and physical protection and a Repair Material Authorization (a sample of this form is in the appendix) completed giving the required information This request must be included with the item for repair, items for repair should be sent to the nearest Comba office:

Comba Telecom Ltd. Hong Kong Office Address: Room 1503-10 Delta House, 3 On Yiu Street, Shatin, Hong Kong. Tel: + 852 2636 6861 Fax: + 852 2637 0966 Email: [email protected] Singapore Office Address: 865 Mountbatten Road, Katong SC #05-43, Singapore 437844 Tel: + 65 6345 4908 Fax: + 65 6345 1186 Email: [email protected] Thailand Office Address: 91/1 Chaiyo Building,5th Floor,Unit 504,Rama 9,Huaykwang,Bangkok,Thailand 10320 Tel: +66 2 643 9507 Fax: +66 2 643 9508 Email: [email protected] India Office Address: Suit No. 202, Chintels Business Centre, A-11 Kailash Colony, New Delhi 110048, India Tel: + 91 11 5173 9997 / 8 Fax: + 91 11 5173 9996 Email: [email protected] Sweden Office Address: Gustavslundsvagen 147, S- 167 51 Bromma, Stockholm, Sweden Tel: +46 8 25 38 70 Fax: +46 8 25 38 71 Email: [email protected] Brazil Sales Office Address: Rua Gomes de Carvalho 1655 cj 101 / 102, 04547-006 Vila Olímpia, São Paulo, Brazil Tel: +55 11 49313099 Fax: +55 11 49313099 Email: [email protected] China Office Address: No.10, Shenzhou Road, Guangzhou Science City, Guangzhou, China Tel: + 86 20 2839 0000 Fax: + 86 20 2839 0136 Email: [email protected]



0.10 READERS COMMENTS

Whilst every endeavour is made to ensure the accuracy of this and all Comba documents, there is always the possibility that an inaccuracy or omission could occur. In order that any amendment/remedial action can be carried out promptly, we would appreciate your co–operation in filling out and returning a photocopy of this customer reply sheet as soon as possible. Customer Information: Name

Title

Company

Date

Address

Telephone Number

Customer Comments: Equipment title

ENU 1-0-0

Page number

Paragraph number

Line number

Figure number

Details of inaccuracies

Other comments

Contact points: Technical Writing E-mail: [email protected]

FAX: +852 2116-6055

End of section



1 GENERAL INFORMATION

SP-1820 GSM1800 Bandwidth Adjustable Pico Repeater (Hereinafter called “pico repeater” or “system”) is designed for indoor or sheltered outdoor operation in the GSM1800 band. It is suitable for applications of signal coverage within offices, residential apartments, lifts and tunnels. It is a bi-directioal amplifier used to enhance signal strength in small and medium size areas. The system gain is adjustable automatically according to the temperature variation within enclosure, thus ensuring stable operation under ambient temperature fluctuations. Characteristics of the SP-1820 repeater are as follows: • System commissioning can be performed without using any additional equipment. • With Integrated antenna (6dB gain) and option for connecting external antenna. • DL operating band double sideband adjustable from 2-15M/25MHz • UL fixed 15/25 MHz operating band and central frequency adjustable. • Available in 16dBm output power. • IF filtering technology is adopted for in-band signal selection and out-of-band signal suppression. • Broadband linear power amplifier ensures un-distorted amplification of GSM1800 signals. • Low noise amplifier improves uplink system noise figure for better voice quality and reduced

dropped call. • System gain and operating frequency are manually adjustable via the control panel. • External power supply. • The cover can be removed without tools. • Highly integrated design with miniaturized enclosure, small size, light weight and easy to install. Refer to the following figure for the the front, side and back views of SP-1820:

Fig 1: Top, front and side Views of SP-1820 enclosure

End of sectio



1.1 SP-1820 SALEABLE ENTITIES

All products of SP-1820 series are described by a ‘Part Number’ that describes the Saleable Entities. Part Number can be recognized as an alphanumeric code seen on the equipment label, depending on the product variant, part number can be derived by constructing it from a group of Saleable Entitles: Part Number Examples for this product are: SP1820 - 02 V 25 P 15 S 50 A 06

Table 1: Product Part Number Explanation

End of Section

Group Identifier of Part Number Saleable Entity Description SP-1820 Product line identifier ………….02 GSM …………….V Variable Band ………………25 Variable Band of 25MHz …………………P Specifying Output power ……………………15 DL 15dBm/CH ……………………….S Specifying Operating Frequency ………………………….50 Freq = 1710 - 1760 / 1805 - 1855MHz ……………………………..A Specifying Power Supply Type ………………………………..06 DC+6V



2 EQUIPMENT DESCRIPTION

2.1 GENERAL APPLICATION

2.1.1 USING INTEGRATED ANTENNA

Integrated antenna is applicable for small-scale rooms. This system is supplied with Integrated antenna already connected, which means the input signals can be transmitted without using external mobile antenna. Refer to the figure below:

Fig 2: Application with Integrated antenna 2.1.2 USING EXTERNAL ANTENNA (OPTIONAL)

For extended coverage, external antenna(s) can be used as per the coverage requirement. External antenna is applicable for multi-room coverage. A power splitter and a quantity of antennas are required. In order to realize external antenna connection, a simple jumper cable is to be installed within the system. Refer to the figure below:

Fig 3: Application with external antenna



2.2 GENERAL

The SP-1820 system consists of the following: Removeable front cover: a simple latch keep the cover securely in place, the system is also shipped with a small cover to hide the LEDs. Integrated Module: includes Main Control Unit, UL/DL RF LNA and FSA. It is used both to amplify the UL/DL signals that effectively reject the undesired signals, and to control and monitor the working parameters of the repeater. Integrated Antenna (default): is used to transmit DL signals and receive UL signals. Control Panel �� is used to set and display the working parameters of the equipment. A two line LCD display provides the feedback of frequency and ATT parameters, and a number of switches to program the frequency and ATT parameters and control the LCD display. External PSU: Converts the mains voltage into 6VDC.



2.3 SP-1820 SYSTEM DIAGRAM

LNA1

LNA2

MobileAntDonor

Ant

Mobile

DT MT

PA1

PA2

DL Band SelectModule

UL Band AdjustModuleBTS

Main Control Unit

Set Frequency Set Gain DisplaySet Frequency

DC 6V Input

LNA1

LNA2

MobileAntDonor

Ant

LNA1

LNA2

MobileAntDonor

Ant

Mobile

DT MT

PA1

PA2

DL Band SelectModule

UL Band AdjustModuleBTS

Main Control Unit

Set Frequency Set Gain DisplaySet Frequency

DC 6V Input

Fig 4: SP-1820 System diagram As shown in the above figure, in downlink, BTS signals are received by donor antenna (connected with DT port and located outdoor). After the duplexer the signals are sent to LNA for pre-amplification, to FSA afterwards to get required output power. Then the signals are filtered by duplexer and are sent to service antenna (connected with MT port and located indoor) to cover the area. In uplink the signals from subscriber’s handset are sent to the device through service antenna. After the duplexer the signals are sent to LNA and FSA. Then after the duplexer again, the signals are sent to BTS through donor antenna. The mobile antenna can be either the integrated antenna (default) or an external antenna (optional) according to customer’s requirements.



2.4 EQUIPMENT LAYOUT

With the front cover removed, the following are seen.

MTDT

Latch

Integrated Module

Intergated Antenna

HIGH

MID

LOW

RUN

ALARM

Converting Port

Control Panel

Antenna Port

Fig 5: SP-1820 equipment internal view



2.5 KIT OF PARTS

For each SP-1820, the following are shipped:

Product Identifier Description Quantity ST4X30 Self - tapping Screw 2 M8 Wall Plug 2 RS-211PICO SMA-SMA jumper cable for use with external antenna 1 STB24-06A, 6VDC/3.5A DC Power Supply Unit (AC-DC power adapter) 1 SP-1820 QI 1-0-0 This manual 1

Table 2: SP-1820 KOP



3 INSTALLATION

3.1 WARNINGS AND ALERTS

Radio Frequency energies There may be situations, particularly the workplace environments adjacent to high-powered RF sources, where recommended limits for safe exposure of human beings to RF energy could be exceeded. In such cases, restrictive measures or actions may be necessary to ensure the safe use of RF energy. High voltage The equipment has been designed and constructed as to prevent as far as reasonably practicable danger. Any activity, such as installation, operation and maintenance, on or near the equipment must be as far as reasonably free from danger. Where there is a risk of damage to electrical systems due to adverse weather, extreme temperatures, wet, corrosive or dirty conditions, flammable or explosive atmosphere, then the system must be suitably installed to avoid such a danger. Protective Earthing Equipment provided for the purpose of protecting individuals from electrical risk must be properly used and maintained. Handling Precautions Precautions should be taken in equipment handling activities including lifting, lowering, pushing, pulling, carrying, moving or holding, or the activities to prevent an object, animal or a person going into the enclosure, or the activities when extra efforts are needed such as pulling a lever, or operating power tools. ESD Take necessary precautions when handling ESD-sensitive devices. Assume that all solid-state electronic devices are ESD-sensitive. Do use a grounded wrist strap or the like while working with ESD-sensitive devices. Transport, store, and handle ESD-sensitive devices in static-free environments.



3.2 SITE PLANNING CONSIDERATIONS

Site considerations The repeater is designed for indoor installation and operation. Installation location Mounting surface shall be capable of supporting weight of the equipment, allow 2Kg for the SP-1820 equipment. Physical location should be able to achieve signal strength of better than -70dBm from the BTS antenna, and the MT antennas should provide the required coverage. Antenna separation For optimal operation, the physical separation of the MT and DT antennas should satisfy the condition for I > GMAX +10dB, where I represents isolation between MT and DT ports. Environmental Humidity has an effect on the reliability of the equipment. It is recommended to install the equipment in location having stable temperature and un-restricted air-flow. SP-1820 equipment has been designed to operate at the temperature range from -20°c to +40°c with relative humidity at ≤ 85%. Powering (AC mains supply) The external power supply unit provides power to all modules within the enclosure. The equipment accepts 6VDC via an external PSU. Refer to Ref 0.6.1 for other relevant product specifications. In order to avoid electromagnetic interference, select the SP-1820 mounting location to minimize interference from electromagnetic sources such as: large electricity powered equipment. Grounding requirement Verify the equipment has been well grounded, this includes antennas and all cables connected. Ensure lightning protection for antennas is properly grounded. Cable routing The RF cables for SP-1820 have SMA (F) connectors; other cable connects the equipment with the external PSU. Ensure cables are supported where necessary and secured so that they are not damaged. Manual handling During transportation and installation, take necessary handling precautions to avoid potential physical injury to the installation related personnel and/or damages to the equipment.



3.2.1 REPEATER INSTALLATION CHECKLIST

Installation Location Requirement Considerations

Working Space available Ample space on mounting wall surface for unrestricted airflow and cable routing. 300mmX300mmX300mm for wall mounting is recommended.

AC power supply at each installation location Power cord length is about 3m (10 ft), use a dedicated AC breaker or fuse circuit, and with good access to an earthing point.

EMC and interference Do not locate near large transformers or motors that may cause electromagnetic interference.

Maintain reasonable distance from chassis to DT, MT antennas

Reduce of signal loss in feeder cable

Suitable operating environment -20°C to 40°C, Maximum 85% relative humidity. Avoid direct sun exposure to the equipment enclosure.

Table 3: Repeater Installation checklist

3.2.2 ANTENNA INSTALLATION CONSIDERATION

Installation Location Requirement Considerations Locate donor antenna in a site to receive the maximum signals from the desired BTS and to shield the other signals at the same time.

For maximum output power, Maximum input power = Maximum Output Power – Gmax

Line of sight between BTS antenna and donor antenna is required

Isolation of BTS antenna and mobile antenna (I) must be larger than the maximum gain of the repeater in operation.

I > Gmax+ 10dB

Table 4: Antenna installation checklist



3.3 INSTALLATION PROCEDURES

3.3.1 GOODS INWARDS INSPECTION

This SP-1820 was factory tested, inspected, packed, and delivered to the carrier with utmost care. Do not accept shipment from carrier which shows damage or shortage until the carrier's agent endorses a statement of the irregularity on the face of the carrier's receipt. Without documentary evidence, a claim cannot be processed. Open and check each package against the packing list. For any shortage, contact Comba Telecom Systems. Do not remove items from packing materials until installation. This equipment can be either installed on wall or laid on a table horizontally. 3.3.2 TOOLS

See Appendix for a recommended list of tools required for installation and maintenance. 3.3.3 PREPARATION

SP-1820 equipment: � Mounting surface of wall capable of supporting enclosure’ weight: � 2.5 kg. � Power outlet within 1.5m.



3.3.4 ANTENNA CONNECTION

The equipment is equipped with an integrated antenna (6dBi gain) which has already been connected to the “Antenna Port”. The optional external antennas can be used for extended signal coverage. The preparation for use with external antenna is listed below: � Remove the front cover by disengaging the latch located at the bottom of the equipment. � Disconnect the integrated antenna from the “Antenna Port”. � Carefully install jumper to bridge “antenna port” with “converting port”, ensure connections are

tightened sufficiently. � Position the pig-tail of the integrated antenna so it does not short circuit ant electronics. � Connect the external antenna with the equipment via the “MT Port” located on the top. � Install the front cover.

Fig 6: Default Integrated Antenna connection (control panel removed for clarity)

Fig 7: Jumper cable installed (Integrated antenna and control panel removed for clarity)



3.3.5 WALL MOUNTING

� Locate and prepare two holes spaced apart by 45mm. � Depending on the mounting surface, two M8 wall plugs may be needed, insert and tighten two

self-tapping screws into the wall plugs, leave the screw heads protruding by about 5mm. � Raise the chassis and hook the mounting plate onto the screws to complete the installation.

Fig 8: Mounting arrangement at the rear of the unit

Wall

ST4x30 Screw

Equipment Enclosure

M8 Wall Plug

Fig 9: Alignment of mounting screws



3.3.6 DRIP-LOOP

Comba recommends that every horizontal cable entry to the equipment forms a 'U' before its entry to the equipment. Any accumulated water on the cable will drip down at the bottom of the loop and will not climb up to the equipment. 3.3.7 EQUIPMENT CONNECTIONS

The equipment has been designed for all cables entry from the top of the unit.

Power SupplyMT DT

Fig 10: Connecting to SP-1820 Service voltage connection The equipment accepts mains voltage via the AC-DC power adapter. The recommended DC connection is rated at 6VDC and has three connections to include earth. The cable length is around 1.5m. RF signal connections Connection of feeder cables are as below: donor antenna cable � DT port Connecting to mobile antenna: mobile antenna cable � MT port When the integrated antenna is used, the MT port is unused. The MT port is provided for connection a distributed antenna system to enhance the signal coverage is required.

End of section



4 COMMISSIONING

4.1 MCU LED INDICATORS

On the front panel there is a removeable cover, beneath this cover are five diagnostic LEDs. The Red LED is located on the bottom, and their functions are listed below:

Identifier Colour Indication HIGH Green RSSI indicator which indicates the input field strength.

ON= the DL input field strength is more than -45dBm. OFF= the DL input field strength is less than -45dBm

MID Green RSSI indicator which indicates the input field strength. ON= the DL input field strength is more than -50dBm. OFF= the DL input field strength is less than -50dBm

LOW Green RSSI indicator which indicates the input field strength. ON= the DL input field strength is more than -60dBm. OFF= the DL input field strength is less than -60dBm

RUN Green Operation. ON= normal operation, flash= normal operation start OFF = no power supply / MCU operating problem

ALARM Red System Alarm, ON = Failure Alarm, OFF= operating normally

Table 5: LEDs colour and indication

Fig 11: Location of LEDs

4.2 EQUIPMENT POWER-UP

Before applying power, make sure that the expected voltage, current, and power levels do not violate any ratings. Double check all connections before applying power. Do not touch equipment internal power units or make any changes to the equipment when the equipment is power up.



4.3 DESCRIPTION OF CONTROL PANEL

With the front cover removed, the control panel is revealed.

LCD Display

DlP Switch Reset Set Enter +/- Back

Numbered keysLCD Display

DlP Switch Reset Set Enter +/- Back

Numbered keys

Fig 12: Control panel layout

4.3.1 DIP Switches

DIP Switch: switch ON/OFF the LCD display on the control panel (default = OFF). When the Control panel is switched on, function prompts will be displayed on the LCD Display.

Fig 13: DIP Switch settings on the control panel (OFF and ON)

4.3.2 LCD DISPLAY

This is a two line display, during normal operation, the display is ‘OFF’. The display is enabled with the DIP Switch set to “ON” without user intervention.

Upon switching on the LCD display, the following is observed and followed by displaying the prompt of each function in sequence. Each numbered key represents a function, after a function button has been pressed, the value is highlighted with a solid blinking cursor on the LCD Display. To input the desired value, press the required function buttons on the control panel. Upon completion, press “Enter” and the cursor will disappear. During default entry, if the user requires to modify an incorrect entering figure, pressing “Back” will move the cursor to the previous position.

0 – 5 freq Set 6 - 7 ATT Set



4.4 PROGRAMMING THE SYSTEM

This is done with the LCD display is ON. The following is a description of each push button switch. Reset: pressing “Reset” button if an undesired value is set. Set: pressing “Set” button after pressing the relative function buttons to enter that parameter. Enter: press “Enter” button after the desired parameter has been entered to store it into memory. Function

Button Function Value displayed on the LCD display

0 Set UL centre frequency UL_freq

1 Offset UL frequency LL_freq Offset

2 Set DL upper limiting frequency DL_Ufreq

3 Offset DL upper limiting frequency DL_Ufreq Offset

4 Set DL lower limiting frequency DL_Lfreq

5 Offset DL lower limiting frequency DL_Lfreq Offset

6 Set UL ATT UL_ATT

7 Set DL ATT DL_ATT

8 No function N/A

9 No function N/A

+/- Change sign between plus and minus Toggle between “+” and “-“

Back Back space Cursor moved back

Table 6: numbered function and value displayed on the LCD Display

Note: for frequency offset, the adjustable step is 25KHz and the maximum adjustable range is 200 kHz. 4.4.1 EXAMPLES

Function Button

Task Press Sequence

0 Set UL center frequency to 1769.8MHz 0 – Set – 1769.8 – Enter 1 Set UL frequency Offset to +175KHz 1 – Set – 175 – Enter 2 Set DL upper limiting frequency to 1860MHz 2 – Set – 1860 – Enter 3 Set DL upper limiting frequency offset to +50KHz 3 – Set – 050 – Enter 4 Set DL lower limiting frequency to 1866MHz 4 – Set – 1866 – Enter 5 Set DL lower limiting frequency Offset to +25KHz 5 – Set – 025 – Enter 6 Set UL ATT to 5dB 6 – Set – 05 – Enter 7 Set DL ATT to 25dB 7 – Set – 25 – Enter

Table 7: Examples of parameters setting



In the case that users need to return to set the default value when an undesired value is set, proceed with the following frequence:

Function Button

Default Value Press Sequence

0 1767.4MHz 0 – Set – 1767.4 – Enter 1 100MHz 1 – Set – 100 – Enter 2 1870MHz 2 – Set – 1860 – Enter 3 0MHz 3 – Set – 0 – Enter 4 1855MHz 4 – Set – 1855 – Enter 5 0kHz 5 – Set – 0 – Enter 6 0 6 – Set – 0 – Enter 7 0 7 – Set – 0 – Enter

Table 8: Default value of each parameter

4.5 MCU RESET

If it is required to reset the system when a lockup occurs, press the “Reset Switch” located on the MCU. After pressing, the LED “RUN” will be ON for about five seconds indicating system is being initialization, and then it will turn to flash indicating normal operation.

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Fig 14: Reset Switch and MCU area



4.6 SYSTEM COMMISSIONING

The LED “RUN” flashes to indicate the monitoring system initialization finished, and then system commissioning can be operated manually without using any professional commissioning equipment. Commissioning Tasks Observation 1. Check power supply,

antenna and feeder cable � Make sure the working voltage of the PSU is within the

working range and correct connection of power mains. � Make sure the antenna frame, feeder cable and the

equipment are all well grounded. � After switching of AC power, system commissioning can

be commenced after the internal monitoring system has been initialized.

2. Check UL/DL Power Level � Push out the enclosure cover by pressing the latch at the bottom lid, the Control panel of this equipment will be emerged. (Note: refer to Fig 12: Control panel layout

� figure and Table 8: Default value of each parameter for the function and values of the function buttons displayed on the screen)

� System commissioning can be operated manually through operating the switches and function buttons on the control panel.

� Check the input ALC limit and make sure the DL ALC�10dBm, UL ALC�10dBm

3. Set operating frequency � Set the operating frequency to adjust the centre frequency, DL working channel and to control the working channel of the equipment.

� Press the relative function button and then “SET” button to set the operating frequency. At this moment, the LED Display will flash. Then input the desired parameters and press “ENTER” button to complete setting. Press “Reset” button if an undesired value is set to get back to the previous setting.

4. Set ATT � Set the operating gain of the equipment based on the actual signal strength. The defaulted value of the UL ATT and DL ATT is 0. The setting steps are the same as the setting of working frequency.

Table 9: Commissioning procedures for SP-1820

End of section



5 SYSTEM MAINTENANCE

The SP-1820 repeater is designed for trouble free operation and generally does not need maintenance. Maintenance activities should only be carried out by trained personnel. During operation, if the LED “ALARM” is generated ON, first check the AC power cable and verify AC mains supply is normal. Then disconnect the DT signals, if it is still alarming, cut and reconnect the power supply and recheck as above. In this way, if the “ALARM” is still ON and the signal coverage is unavailable, contact Comba Telecom System. Periodic inspection of the repeater equipment(s) is recommended, the recommended tasks includes: � Measurement of the return loss of the feeder system � Verify the direction and position of antennas. Re-align if necessary. � Make sure the cable gland and sealing on the RF cable connectors are not damaged. � Inspect and record operation status, the diagnostic LEDs and DIP switches. � Verify the actual coverage effects are as good as expected � Verify lightning and grounding protection is in good condition.

End of section



6 APPENDICES

6.1 APPENDIX A: TOOLS FOR INSTALLATION AND MAINTENANCE

The only tools required are for installing and fixing screws and tightening the SMA connectors. Hereinafter is the recommended list for installation and routine maintenance:

Description Slotted screwdriver Philips screwdriver Electrically operated drill and masonry drill bit for wall plug Anti-static wrist strap Spanner for SMA connectors Allen key (M5.5) Side cutter RF power meter (e.g. Bird 5000)



6.2 APPENDIX B: RMA (RETURN MATERIAL AUTHORIZATION) FORM

End of section

End of Document

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