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DUAL-BAND OPTICAL REPEATER
This is an unpublished work the copyright in which vests in Comba International ("Comba").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.
RA-7800 QI
ENU Status : 1-0-1
INSTALLATION GUIDE FOR RA-7800
RA-7800
INSTALLATION GUIDE
Copyright - refer to title page
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:
Technical Writing
Comba Telecom Ltd.
Page 1
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Summary of Contents for Comba Telecom RA-7800
- Page 1 INSTALLATION GUIDE FOR RA-7800 RA-7800 DUAL-BAND OPTICAL 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: Technical Writing Comba Telecom Ltd.
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Page 2: Table Of Contents
INSTALLATION GUIDE FOR RA-7800 CONTENTS Section Page CONTENTS ........................... 2 INDEX TO FIGURES AND TABLES ..................4 HISTORY..........................6 ISSUE CONTROL ......................... 7 REFERENCES ........................8 GLOSSARY OF TERMS ....................... 9 SAFETY NOTICES AND ADMONISHMENTS..............10 SERVICING POLICY AND RETURN OF EQUIPMENT ............. 11 0.10... - Page 3 INSTALLATION GUIDE FOR RA-7800 4.2.1 MU LED INDICATORS......................46 4.2.2 RU LED INDICATORS ......................46 OMT............................. 47 4.3.1 OMT SOFTWARE INSTALLATION ..................47 4.3.2 OMT SOFTWARE VERSION ....................47 4.3.3 CONNECTION TO OMT ..................... 47 4.3.4 DESCRIPTIONS OF PARAMETERS.................. 48 4.3.5...
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Page 4: Index To Figures And Tables
Fig 30: Wireless modem ........................44 Fig 31: “O” ring fitting details......................... 56 Table 1: MU Shelf Equipping Rule......................20 Table 2: RA-7800 Regular KOP......................23 Table 3: MU KOP ..........................23 Table 4: RU KOP ..........................23 Table 5: Installation checklist ........................ 26 Table 6: PSU SIU description ....................... - Page 5 Table 21: RU LED Indicators ........................ 46 Table 22: RF information ........................49 Table 23: Management - RF parameters....................49 Table 24: Alarm List for RA-7800......................50 Table 25: FOU SIU alarm ........................50 Table 26: Properties information......................51 Table 27: Alarms diagnosis........................55...
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Page 6: History
INSTALLATION GUIDE FOR RA-7800 HISTORY Change No. Details Of Change 1-0-0 Installation Guide initially created and released in Mar 2008. 1-0-1 Document revised for India and Brazil Offices change in Apr 2008. RA-7800 QI Copyright - refer to title page... -
Page 7: Issue Control
INSTALLATION GUIDE FOR RA-7800 ISSUE CONTROL Date Section RA-7800 QI Copyright - refer to title page Page 7 ENU Status : 1-0-1... -
Page 8: References
INSTALLATION GUIDE FOR RA-7800 REFERENCES 0.6.1 RA-7800s2-1001YH Original user manual released in Mar 2008. 0.6.2 OMT v3.20 QE 1-1-0 User manual released in Jan 2007 RA-7800 QI Copyright - refer to title page Page 8 ENU Status : 1-0-1... -
Page 9: Glossary Of Terms
INSTALLATION GUIDE FOR RA-7800 GLOSSARY OF TERMS Automatic Level Control Attenuation Base Station Base Transceiver Station Decibel Decibels relative to 1 milliwatt Downlink Duplexer Donor Terminal EEPROM Electrically Erasable Programmable Read Only Memory E/O,O/E Electrical/Optical, Optical/Electrical Hertz Identification Low Noise Amplifier... -
Page 10: Safety Notices And Admonishments
INSTALLATION GUIDE FOR RA-7800 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. -
Page 11: Servicing Policy And Return Of Equipment
INSTALLATION GUIDE FOR RA-7800 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. -
Page 12: Readers Comments
INSTALLATION GUIDE FOR RA-7800 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. -
Page 13: General Information
This system consists of Master Unit (MU) RA-7800-D and Remote Unit (RU) RA-7800-R. The MU can support up to four RUs through optical fibers. -
Page 14: Fig 1: Front, Side And Bottom Views Of Mu Enclosure
INSTALLATION GUIDE FOR RA-7800 The figures below show the equipment enclosure layout of RA-7800 MU and RU: Fig 1: Front, side and bottom views of MU enclosure WCDMA OP/DL_UL EXT_ALM 200-240V~50Hz/60Hz RS-232 Fig 2: Front, side and bottom views of RU enclosure... -
Page 15: Equipment Description
INSTALLATION GUIDE FOR RA-7800 2 EQUIPMENT DESCRIPTION SYSTEM DIAGRAM DL Adapter Downlink GSM 1800 Combiner Optical Tx/Rx Uplink WCDMA 2100 UL Adapter Distribution Board Power Input Fig 3: MOU System diagram Fig 4: RU System Diagram As shown in the above figures, the combined signals as GSM1800 and WCDMA2100 from the BTSs are received and converted into optical signals after amplification in the MU, and then the optical signals are transmitted to the RU via optical fiber. -
Page 16: Typical Application
INSTALLATION GUIDE FOR RA-7800 The RF signals from the customer phones are received by the RU and converted to the optical signals after amplification in the RU. And then via UL optical fiber, the signals are transmitted to the MU, which then converts the optical signals into RF signals. After amplification, the signals are transmitted back to the BTS. -
Page 17: Single Fiber Configuration
Refer to the following two applications of single fiber configuration: 2.2.2.1 Typical Application of Single Fiber Configuration Shown below is a typical application showing the ability to interwork RA-7800 with existing fiber (e.g. 1310nm occupied) Fig 8: Application of one MU with one RU through Single Channel FOU with WDM... -
Page 18: Fig 9: Application Of One Mu With Two Rus Through Double Channel Fou With Wdm
INSTALLATION GUIDE FOR RA-7800 Fig 9: Application of one MU with two RUs through Double Channel FOU with WDM 2.2.2.2 Extension Application of Single Fiber Configuration A MU can host four RUs through FOU. This can be achieved by accommodating two Double Channel FOUs with WDM. -
Page 19: Equipment Layout
INSTALLATION GUIDE FOR RA-7800 EQUIPMENT LAYOUT The MU is constructed into a 19” shelf; it is connected via the connectors located on the front and back panel. The RU is designed for all cables entries from the bottom of the enclosure. -
Page 20: Input
INSTALLATION GUIDE FOR RA-7800 ALARM POWER OP/ DL_UL OP/DL_UL OP/ DL_UL 1800MHz 2100MHz RS-232 220 240V 50/60Hz Downlink Uplink Uplink Downlink BTS-ALM MODEM Fig 13: Front view of one MOU with three RRU through one dual channel FOU and one single FOU... -
Page 21: Fig 15: Ru Equipment Layout
INSTALLATION GUIDE FOR RA-7800 The internal layout for the RU is shown below: Pre-amplifier Pre-amplifier UL Filter DL Filter Fig 15: RU equipment layout RA-7800 QI Copyright - refer to title page Page 21 ENU Status : 1-0-1... -
Page 22: Equipment Constitution
INSTALLATION GUIDE FOR RA-7800 EQUIPMENT CONSTITUTION This optical repeater consists of modules described below: The MU consists of: • Power Supply Unit (PSU): Converts the input voltage into stable DC to supply power for other modules and to charge the internal Li-ion battery. -
Page 23: Kit Of Parts
For this system, the following are shipped: Product Identifier Description Quantity RA-7800 QI 1-0-1 This equipment manual OMT v3.20 OMT software on CD-Rom Table 2: RA-7800 Regular KOP Product Identifier Description Quantity 3.15A Delay Fuse for AC PSU Equipment replacement fuse Power supply cable R-9122C/R-9122AC... -
Page 24: Installation
INSTALLATION GUIDE FOR RA-7800 3 INSTALLATION WARNINGS AND ALERTS Laser Laser light can cause damage to eyes. Laser light is not visible. Viewing it directly does not cause pain. The iris of the eye will not close when viewing a bright light. Consequently, serious damage to the retina of the eye is possible. -
Page 25: Site Planning Considerations
INSTALLATION GUIDE FOR RA-7800 SITE PLANNING CONSIDERATIONS Site Considerations The MU can be located indoors to facilitate coupling of BTS signals and power supply connections. The ALC range of received BTS signal is -15~5dBm. Hence, an appropriate coupler must be used according to the BTS output power. -
Page 26: Repeater Installation Checklist
INSTALLATION GUIDE FOR RA-7800 Cable Routing Depending on equipment configuration, a variety of types of cables are connected to the MU and RU: coaxial cables, optical fibers, power cable, communication cable, and commissioning cable. Where applicable, ensure cables are properly routed and secured so that they are not damaged. -
Page 27: Installation Procedures
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. -
Page 28: Rack Mounting Of Mu
INSTALLATION GUIDE FOR RA-7800 3.3.4 RACK MOUNTING OF MU If a 2-post open-rack is to be used for installation of the MU, the mid-mounting brackets are to be used. For rack or cabinet mounting, the mid-mounting brackets are to be removed from the 4U shelf. -
Page 29: Mounting Rack Of Ru
INSTALLATION GUIDE FOR RA-7800 3.3.5 MOUNTING RACK OF RU The following figure shows the dimension of the RU mounting rack, which is used for mounting the RU to either a wall or on a pole. There are four holes in total catering for both mounting options: •... -
Page 30: Ru Lifting Lug
INSTALLATION GUIDE FOR RA-7800 3.3.6 RU LIFTING LUG This is provided to facilitate lifting and positioning of the RU equipment during installation. The lifting lug is to be attached to the rear of the RU enclosure as shown below. Lifting Lug... -
Page 31: Pole Mounting Of Mounting Rack
INSTALLATION GUIDE FOR RA-7800 3.3.8 POLE MOUNTING OF MOUNTING RACK The RU can be mounted on poles of about 60~75mm in diameter. Secure the mounting rack onto the pole using M12x160 carriage bolts and clamps through the square holes. Pole... -
Page 32: Drip-Loop
INSTALLATION GUIDE FOR RA-7800 M8x20 hex bolt Fig 21: Attaching the RU onto the mounting rack 3.3.10 DRIP-LOOP Comba recommends that every horizontal cable entry to the equipment forms a 'U' before it’s 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. - Page 33 INSTALLATION GUIDE FOR RA-7800 AC220V PSU POWER Power switch POWER IEC socket for standard power cord. 176~264V 176~264V 176~264V 45/55Hz indicates the input power is rated at 45/55Hz 45/55Hz AC220V with the voltage range from 176V to 264V. DC-48V PSU...
- Page 34 INSTALLATION GUIDE FOR RA-7800 The MOU is controlled and monitored with this unit. The operation MCU with wireless status and local connection to PC is available on this module. The modem wireline modem is integrated within this unit. (standard application) Green LED to indicate the communication status (FSK Modem) between MOU and RRU.
- Page 35 INSTALLATION GUIDE FOR RA-7800 Performs to amplify and condition for downlink RF signals. SMA connector for downlink output port connects with "Downlink" of CBU when CBU option is in use Downlink or directly connects with TX of GSM1800/ WCDMA2100 of BTS.
- Page 36 INSTALLATION GUIDE FOR RA-7800 The following are the introduction on the connectors of each FOU type. This is applicable when no integrated WDM is required. It implements Single Channel FOU the connection between MU and RU through dual fiber. Each single without WDM channel FOU can serve one RU.
- Page 37 INSTALLATION GUIDE FOR RA-7800 This is applicable when no integrated WDM is required.It implements the Dual Channel FOU connection between MU and RU through dual fiber. Each Dual Channel without WDM FOU can serve two RUs. FC/APC connector for downlink optical output port.
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Page 38: Fig 22: Mou Back Panel View
INSTALLATION GUIDE FOR RA-7800 A8 B4 B8 C2 C4 D2 D2 E2 Fig 22: MOU back panel view Connector Description A1~A8 Disable B1~B2 Disable B3~B4 RFU input ports 1~2 B5~B6 Disable B7~B8 RFU input ports 1~2 C1, C3 RFU output ports 1~2... -
Page 39: Fig 24: Rear-Shelf Connectivitity Of One Mou With Two Rru Through Dual Channel Fou With Wdm
INSTALLATION GUIDE FOR RA-7800 Fig 24: Rear-shelf connectivitity of one MOU with two RRU through dual channel FOU with WDM Fig 25: Rear-shelf connectivitity of one MOU with three RRU through one single FOU and one dual channel FOU with WDM... -
Page 40: Ru Connectors
INSTALLATION GUIDE FOR RA-7800 3.4.2 RU CONNECTORS Connectors on the RU are identified below: WCDMA OP/Downlink OP/Uplink RS-232 EXT_ALM 80-135V~50Hz/60Hz Fig 27: RU connectors OP/Downlink Optical connector, when WDM is in use, this connected with the OP OP/Uplink Downlink and OP Uplink in the MU. When WDM is in use, this will function as “OP/DL_UL”. -
Page 41: Service Voltage Connection
INSTALLATION GUIDE FOR RA-7800 Protective Ground Connection The enclosure must be grounded securely by connecting a copper wire (CSA 16mm ) to the grounding terminal on the equipment/rack, and the other end to a protective ground (i.e. building earth point). An internationally acceptable colour code of the ground connection wire is green/yellow. -
Page 42: Rf Connection
INSTALLATION GUIDE FOR RA-7800 MU Li-ion Battery Connection The Li-ion battery is located within the PSU SIU and is disconnected prior to shipment. Before equipment power up, user needs to withdraw the PSU SIU from the MU shelf, locate and connect the in-line connector of the battery pack and then reinsert the PSU SIU. -
Page 43: External Alarm Connection
4 ~ 7 Reserved. Table 17: Pin definition of the BTS_ALM port Depending on OMT/OMC configuration, alarm to BTS can be signalled from RA-7800 by either: a) pin1 and pin3 ‘closed’ or b) pin2 and pin3 ‘opened’. 3.5.7 EXTERNAL ALARM CONNECTION Four external alarms INPUT to RU are realized on the “EXT_ALM”... -
Page 44: Connect To Pc
INSTALLATION GUIDE FOR RA-7800 Indicator LED Indicator LED RS232 port RS232 port SIM card SIM card Power port Power port SIM card carrier SIM card carrier Modem RF output Modem RF output (SMA connector) (SMA connector) Yellow button Yellow button... -
Page 45: Commissioning
INSTALLATION GUIDE FOR RA-7800 4 COMMISSIONING PRE-COMMISSIONING TASKS After equipment installation, perform the following steps before equipment powering and commissioning, check that the expected voltage, current, and power levels do not violate any ratings. Double check all connections including ground before applying power. Do not manipulate circuits or make changes when power is applied: •... -
Page 46: Led Indicators
INSTALLATION GUIDE FOR RA-7800 LED INDICATORS 4.2.1 MU LED INDICATORS Diagnostic LEDs are located on the MCU of the MU; each indicates the status of a particular function: Identifier Color Indication Operation indicator – power is supplied to the MU. Flashes once every Green second to indicate normal system operation. -
Page 47: Omt
4.3.2 OMT SOFTWARE VERSION OMT software is designed to be backward compatible. To view the OMT software version, select [Help] -> [About] in the OMT software main window. The current OMT version for RA-7800 is OMTv3.20. 4.3.3 CONNECTION TO OMT 4.3.3.1 Physical... -
Page 48: Descriptions Of Parameters
INSTALLATION GUIDE FOR RA-7800 Remote Connection An integrated wireless modem implementing the link (data and SMS mode) provides the option for equipment remote connection over PSTN. SMS mode is available only for wireless modem. For managing the RU, a remote connection is achieved by in-band communication over the optical fiber. - Page 49 INSTALLATION GUIDE FOR RA-7800 Node Name Description [Switch] Switch on/off is to enable/disable the PA output [Pre-ATT] The purpose of adjusting the Pre-ATT is to adjust the system gain and avoid BTS input power exceeding the power range, thus ensuring good call quality...
- Page 50 Alarm. All alarm information, in general, will be displayed in the right part of the main screen when clicking on each node of the [Alarm Info.]. Please refer to Reference 0.6.2 OMT v3.20 Software Product Manual for the specified operation details. Following is the alarm list of RA-7800. Alarm name...
- Page 51 INSTALLATION GUIDE FOR RA-7800 4.3.4.5 PROPERTIES INFORMATION Properties information is equipment specific. The property parameters include Equipment ID, Chip Info., Equipment Info., Site Location, Trigger Report that are equipment specified. All properties information, in general, will be displayed in the right part of the main screen when clicking on each node of the [Properties Info.].
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Page 52: Fault Management
INSTALLATION GUIDE FOR RA-7800 4.3.5 FAULT MANAGEMENT Fault management involves inspecting and changing the thresholds and managing alarm conditions. Generally, failure is caused due to radio signal (poor radio signal), equipment (module failure) and site (power, over temperature). The alarm is colour-coded to indicate its status and alarm levels. The alarm level is equipment specific. -
Page 53: Non-Volatile Memory
INSTALLATION GUIDE FOR RA-7800 NON-VOLATILE MEMORY A non-volatile storage device on the MCU holds the configuration of the equipment. The following information is preserved in the event of power-loss: Network Configuration Device ID SMS report mode including SMS center number and OMC report number setting... -
Page 54: Commissioning Procedures
INSTALLATION GUIDE FOR RA-7800 COMMISSIONING PROCEDURES Since end-to-end connection is available for RA-7800 OMT software, users can configure the parameters at MU, and then offset the parameters of MU at RU according to desired coverage level and interference to other BTS signals. Perform the following procedures for system commissioning. -
Page 55: Operation
INSTALLATION GUIDE FOR RA-7800 5 OPERATION Following installation and commissioning, occasional operation tasks to handle alarms may be required: Alarm condition Diagnosis LNA, Check power and signal connections of respective modules. If the power alarms handling and signal wire connections are OK, then the respective modules may be faulty. -
Page 56: Maintenance
INSTALLATION GUIDE FOR RA-7800 6 MAINTENANCE The RA-7800 system is designed for trouble-free operation and generally does not need maintenance. Maintenance activities should only be carried out by trained personnel. The equipment operation status can be observed remotely through OMT/OMC. -
Page 57: Appendices
INSTALLATION GUIDE FOR RA-7800 7 APPENDICES APPENDIX A: TOOLS FOR INSTALLATION AND MAINTENANCE The following are the recommended list of tools new installation and routine maintenance: • Slotted screwdriver • Philips screwdriver • Ring spanner (Assorted size: 12~20mm) • Electrically operated drill and masonry drill bits ∅12mm •... -
Page 58: Appendix B: Rma (Return Material Authorization) Form)
INSTALLATION GUIDE FOR RA-7800 APPENDIX B: RMA (RETURN MATERIAL AUTHORIZATION) FORM) End of section End of Document RA-7800 QI Copyright - refer to title page Page 58 ENU Status : 1-0-1...
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