µLink System Manual 862-01545 µLink Digital Radio System Manual Publication Number: 862-01545 Issue 1b February 1999 Tellumat (Pty) Limited Reg. No. 96/000957/07 64/74 White Road, Retreat, 7945 P.O. Box 30451, Tokai, 7966 Telephone: +27 21 710-2911 Fax No.
µLink System Manual 862-01545 Federal Communications Commission Notice NOTE The equipment has been tested and found to comply with the limits for a Class A digital devices, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
µLink System Manual 862-01545 Document Issue Status When an issue status of this manual changes, the record below must be completed and initialled. Page No. 1 - 78 1 - 82 Issue 1b Issue Status 1 1b Authority (ECN No.) Page No. Issue Status Authority (ECN No.
µLink System Manual 862-01545 Table of Contents Page Chapter 1: Purpose and Planning ............................................................1 Introduction to Chapter 1....................................................................1 µLink Product Family.........................................................................1 Role and Purpose ................................................................................1 System Description .......................................................
862-01545 µLink System Manual Chapter 2: Installation ........................................................................... 21 Introduction to Chapter 2 ................................................................. 21 Site Requirements ............................................................................ 21 Parts and Accessories Supplied for Installation................................. 22 Customer Furnished Tools and Equipment.......................................
µLink System Manual 862-01545 Station Control Screen......................................................................51 Indoor Unit: Configuration...........................................................52 Indoor Unit: Build State ...............................................................53 Indoor Unit: Status.......................................................................54 Outdoor Unit: Configuration ........................................................58 Outdoor Unit: Build State.
µLink System Manual 862-01545 List of Illustrations Figure Page Figure 1. µLink Indoor Unit. ...................................................................... 3 Figure 2. µLink Outdoor Unit and Antenna................................................ 3 Figure 3. System Overview Block Diagram. ............................................... 4 Figure 4. Multipath Effects......................................................................... 8 Figure 5. Frequency Band Plan............................
µLink System Manual 862-01545 Note to Reader 1. Users must be familiar with the Windows 95 operating environment. © 1999 Tellumat (Pty) Limited The information contained herein is the property of Tellumat (Pty) Limited and is supplied without liability for errors or omissions. No part may be reproduced, used or disclosed except as authorised by contract or other written permission.
µLink System Manual 862-01545 List of Abbreviations AC Alternate Current AIS All Ones (“1’s”) (detected) BER Bit Error Rate BPSK Binary encoded Phase Shift Keying CBIT Continuous Built in Test CRC Cyclic Redundancy Check DC Direct Current DCE Data Communications Equipment DRL Digital Radio Link DRS Digital Radio Station DTE Data Terminal Equipment FPGA Field Programmable Gate Array IBIT Initiated Built in Test IU Indoor Unit LAN Local Area Network LED Light Emitting Diode L
µLink System Manual PLL Phase Locked Loop QPSK Quadrature Phase Shift Keying RAM Random Access Memory RF Radio Frequency SBIT Start-up Built in Test SDC Serial Data Channel SNMP Simple Network Management Protocol SRD System Requirements Definition SRU Shop Replaceable Unit TMN Transmission Management Network TTL Transistor-Transistor Logic VSWR Voltage Standing Wave Ratio WAN Wide Area Network Page x 862-01545 Issue 1b
µLink System Manual 862-01545 This page intentionally left blank Issue 1b Page xi
862-01545 µLink System Manual Chapter 1: Purpose and Planning Introduction to Chapter 1 Chapter 1 is aimed at management and planning staff to enable them to assess the suitability and logistic requirements of the µLink Digital Radio, hereafter referred to as the µLink. µ Link Product The µLink design philosophy was to produce a range of products, with the data rate dependent purely on the Indoor Unit (IU) and the frequency band dependent purely on the Outdoor Unit (OU).
µLink System Manual 862-01545 System Description System Overview A µLink digital radio relay link (DRL) consists of at least one complementary pair of µLink stations that may be extended over longer distances by linking further station pairs in a multiple hop configuration. A single µLink station comprises an Indoor Unit (Figure 1), an Outdoor Unit and Antenna (Figure 2). The Indoor Unit (IU) and Outdoor Unit (OU) are interconnected by a custom cable. Figure 3 is a block diagram of an µLink DRL.
µLink System Manual 862-01545 Figure 1. µ Link Indoor Unit. Antenna Outdoor Unit Interconnection Cable Figure 2. µ Link Outdoor Unit and Antenna.
µLink System Manual 862-01545 Figure 3. System Overview Block Diagram.
µLink System Manual 862-01545 Table 1 lists the two model variants of the µLink System, with the input data classification and the radio link data rate. Table 2 lists the possible RF configurations with the output power, coupling type, antenna type and regulations with which the unit complies. System Configuration Options Table 1.
µLink System Manual Interface Definitions 862-01545 The µLink System has the following user services: (see Table 3). Table 3. µ Link System: User Services Payload Data Interfaces E1 Data Interface 120Ω RJ-45/75Ω BNC (factory set). Bipolar AMI or HDB3 selectable. T1 Data Interface 100Ω/75Ω (factory selectable), RJ-45 or BNC Connector. Bipolar AMI or B8ZS selectable. Wayside Serial Data Channel Provided for user data. Supports asynchronous full duplex serial data transfer (with hardware control).
µLink System Manual 862-01545 Planning Information Issue 1 Site Evaluation When planning a site for a digital radio relay link, it is of the utmost importance that you take the operational environment of the proposed site into account.
µLink System Manual 862-01545 Multipath Effects Refer to Figure 4. The µLink digital radio operates at a frequency of 2.4 GHz. It is likely that it will be influenced by the effects of multipath. Understanding these effects will help to install the µLink digital radio link and maximise the reliability of the link.
µLink System Manual 862-01545 Installation Information General Information This section contains only general information and installation guidelines for the µLink. Specific installation instructions for the Indoor Unit (IU), Outdoor Unit (OU), Antenna and Interconnection Cable are provided in Chapter 2 of this manual. Indoor Unit The IU is designed for mounting in the DIN 41494 (19") racking standard. It is 1U in height, 390 mm in depth and has a mass of < 6 kg.
µLink System Manual Operational Capabilities 862-01545 The user can view equipment status and configuration data of all MDR equipment attached in a multiple hop link from the IU to which the Craft Terminal is attached. The µLink has the following capabilities: Upload Indoor Unit Software. Allows you to transfer a file of executable code from the Craft Terminal to the IU Microprocessor non-volatile memory. View Equipment Data.
862-01545 µLink System Manual Maintenance Features a. No routine maintenance required. b. Mean time to repair after arrival on site is less than 30 minutes, provided that the units to be repaired are reasonably accessible. c. Extensive self-diagnostics with software-based fault localisation. d. Craft Terminal diagnostics, control and management functions are able to access any local or remote station equipment linked by radio. e. IU alarm display allows for simple fault diagnostics. f.
µLink System Manual 862-01545 System Specifications The µLink has the following specifications: Performance Characteristics Link Range: Low power Coupler type. Up to 10 km. Provides a link margin of 18 dB based on a 10E-5 BER for an E1 link. High Power Coupler type. Up to 30km using a 18 dBi Tx/Rx antenna. Provides a link margin of 22 dB based on a 10E-5 BER for an E1 link. High Power Diplexer type. Up to 40 km using a 22 dBi antenna. Provides a link margin of 22 dB based on a 10E-5 BER for an E1 link.
µLink System Manual 862-01545 Transmitter Characteristics Description a. Carrier Frequency Band Characteristic 2.400 to 2.442 GHz (LB) 2.442 to 2.4835 GHz (HB) b. Modulation B/width (max) 23.5 MHz c. Link Data Rate (max) 2142 kbit/s d. Tx Power, max. oper. +12 dBm (Low Power) +24 dBm (High Power) +30 dBm (Diplexer) e. Tx Power, min. oper. +10 dBm (All options) f. Frequency Stability ±7ppm g. Tuning method Microprocessorcontrolled PLLs h. Transmitter disable under software control i.
µLink System Manual Wayside Service Channel 862-01545 Description • One (1) wayside service channel of RS-232 serial data up to a baud rate of 19200 is provided. • The serial data channel provides simultaneous, full duplex serial data transfer between stations. Data rates range from 300 to 19200 baud. The RS-232 standard is provided, with the following signals : TxD, RxD and Signal Ground. • The interface provides a DCE (Data Communications Equipment) interface mode.
µLink System Manual 862-01545 Power Supply Characteristics Description a. Input supply voltage (DC) 21.5 to 56 VDC b. Input supply voltage (AC) 100 to 240 VAC c. Power Consumption < 20 W d. Selection of a single DC supply or an AC supply to the IU. The OU is supplied by an isolated single DC supply fed from the IU via the interconnecting cable. e. Reverse voltage protection for equipment and supply (DC option only). Controls and Displays Description a.
µLink System Manual Antenna Characteristics (µ Link -C) 862-01545 Description Characteristic a. Size 550 mm x 550 mm x 25 mm flat panel sealed construction b. Frequency 2.400 GHz to 2.4835 GHz c. Gain Tx 18 dBi ± 0.2 dB d. Gain Rx 18 dBi ± 0.4 dB e. Connection non-ohmic coupling to the OU f. VSWR < 1.5 : 1 g. Isolation Tx/Rx > 40 dB h. Polarisation Tx / Rx Orthogonal The µLink -D type can use antennas from other manufacturers.
862-01545 µLink System Manual Equipment Status Monitoring Description a. Indoor Unit Status. The IU monitors the state of the baseband signals in the Information Base and informs the State and Mode Control function of any problems or failures. b. Outdoor Unit Status. The OU transmits a periodic status message to the IU containing the status of the OU. The Fault and Status Manager in the IU monitors this, updates the Information Base and informs the State and Mode Control function of any problems. c.
µLink System Manual Mechanical Characteristics Environmental Characteristics 862-01545 Description Characteristic a. Mass OU (no antenna) IU b. IU Racking Standard < 4 kg < 6 kg 19" DIN 41494, 1U c. OU Mounting Standard Pole mount brackets. 50 to 102 mm pole diameter. Description Characteristic a. Temp. Range • Indoor Unit 0 to +50ºC (operating) -40 to +70ºC (survival) • Outdoor Unit -20 to +70ºC (operating) -40 to +70ºC (survival) b.
µLink System Manual 862-01545 Frequency Band Plan Refer to Figure 5. The µLink Digital Radio operates in the 2.4 GHz to 2.4835 GHz ISM frequency band. The µLink has predefined channels allocated within this band (Channels A and B). The recommended channel spacing between transmit and receive frequencies is 42 MHz. This is based on the bandwidth occupied by the spread spectrum signal and is used to maximise link performance.
µLink System Manual 862-01545 This page intentionally left blank Page 20 Issue 1b
µLink System Manual 862-01545 Chapter 2: Installation Introduction to Chapter 2 Chapter 2 provides the installation personnel with the information required to assemble, install and commission the µLink System. Site Requirements Before installing the µLink, ensure that the installation site meets the following requirements: • Site characteristics are satisfactory (see Planning Information on page 7). • Suitable mast (pole) used for Antenna and Outdoor Unit (OU) installation is firmly in position.
µLink System Manual Parts and Accessories Supplied for Installation 862-01545 The following parts and accessories are supplied by Tellumat for the installation of the µLink System. Note that this list relates to the parts supplied for a system at a DRS, ie. one end of a DRL. Description Qty Remarks Antenna 1 The antenna is shipped with a complete installation kit including O-rings, mounting brackets, nuts and bolts etc. Outdoor Unit (OU) 1 Ensure OU is compatible with the antenna provided.
µLink System Manual 862-01545 Customer Furnished Tools and Equipment The following table lists all tools and equipment required to install the µLink System. Note that these items must be supplied by the customer Description Qty 13 mm Spanner 1 Used to secure the Antenna to the Pole. 8 mm Spanner 1 Used to secure the Antenna Mounting Bracket to the Antenna. Large Flat Screwdriver 1 As above. Earth Cable or Strap with 5 mm earth lug 1 For earthing the IU. Braided tube, copper tinned.
µLink System Manual 862-01545 Installation Overview Installation of the µLink is described under the following four main headings: a. Installing the Outdoor Unit (OU) and Integral Antenna. b. Installing the Indoor Unit (IU). c. Installing the IU/OU Interconnection Cable. d. System Commissioning. To supplement the installation procedure, the following appendix is provided at the end of this chapter: • Appendix A provides connector pin details for the external connectors of the IU and OUs.
µLink System Manual 862-01545 Antenna Mounting Bracket Securing Holes Outdoor Unit Mounting Stand-off Nuts Antenna Mounting Bracket Securing Holes Figure 6. µ Link -C Antenna.
µLink System Manual Outdoor Unit Installation 862-01545 Follow these steps to mount the OU onto the Antenna. See Figure 6 and Figure 7. Step 1. 2. 3. Action Loosen the three OU securing stand-off nuts located on the Antenna (see Figure 6). Position the OU on the stand-off nuts through the three (3) key hole slots on the OU (see Figure 7). Tighten the securing stand-off nuts. Outdoor Unit Mounting Keyhole Slots Figure 7. µ Link Outdoor Unit.
µLink System Manual 862-01545 Outdoor Unit Power Levels Follow these steps to set the transmitted power level on the OU. Refer to table 4 for transmitted power levels. Step 1. 2. Action Determine the gain of the antenna, AT, to be installed with the OU. Calculate the transmitted power, PT, according to the following formula: PT = 30dBm – (AT – 6)/3 dBm 3. 4. 5. 6. Determine the power level to be used in NMS by consulting table 4.
µLink System Manual 862-01545 Table 4.
µLink System Manual 862-01545 Indoor Unit Installation Follow these steps to install the IU. See Figure 8. Step 5. 6. 7. 8. 9. Issue 1 Action Install the Data Interface module into the IU by sliding it in until the male connector on the module mates firmly with the female connector inside the IU. Secure the Data Interface module to the IU with the two (2) x M4 screws provided. Slide the IU into the 19" rack and secure to the rack using four (4) x M3 screws.
µLink System Manual 862-01545 Step 10. 11. 12. Outdoor Unit Cable Connector Data Interface Module Action Make-off the 120Ω (E1)/100Ω (T1) - factory set tributary input and output connections and connect to the RJ-45 connector on the rear panel of the IU. Alternatively, connect the 75Ω (factory set) coaxial tributary connections to the BNC input and output connectors on the IU rear panel as required.
µLink System Manual 862-01545 Interconnection Cable Installation Follow these steps to install the IU / OU interconnection cable. CAUTIONS DO NOT EXCEED THE RECOMMENDED BENDING RADIUS OF THE CABLE, IE. 10 cm. DO NOT OVER TIGHTEN THE CABLE STRAPS ON THE CABLE AND DO NOT FASTEN THE ACTUAL STRAP LOCKING MECHANISM OF THE CABLE STRAP ONTO THE CABLE. Step 1. 2. 3. 4. Issue 1 Action Connect the interconnection cable to the connector on the base of the Outdoor Unit (see Figure 9).
µLink System Manual 862-01545 Outdoor Unit IU/OU Cable Connector Interconnection Cable Figure 9. Outdoor Unit Mounted on Antenna.
µLink System Manual 862-01545 System Commissioning After completing the physical installation of the Indoor Unit, Antenna and Outdoor Unit, and the Interconnection Cable, you need to commission the System. This procedure describes how to set up the minimum requirements for successful µLink System operation. Information Required Before commissioning the system, you should know the proposed frequency band plan (Tx and Rx) for each station, and the PN sequence for the link.
µLink System Manual Link Error Performance Test 862-01545 Perform a link error performance test as follows: 1. 2. 3. 4. Run data over the link for a period of 15 hours. Record the RSSI Record the BER Record the LED statuses Record all results on a check list. See Table 5 for an example. Table 5. Link Error Performance Check List Description 1. Transmit Frequency/Channel 2. Final RSSI 3. Link Test BER 4.
µLink System Manual 862-01545 Appendix A to Chapter 2: µLink External Connector Pin Details Indoor Unit Connector Pin Details E1 DATA (IU Rear Panel) 8-pin RJ-45 Female Connector 8 1 Pin 1 2 3 6 4, 5, 7, 8 Details E1 Tx Data (+) E1 Tx Data (-) E1 Rx Data (+) E1 Rx Data (-) Not Used Pin 1 2 3 6 4, 5, 7, 8 Details T1 Tx Data (+) T1 Tx Data (-) T1 Rx Data (+) T1 Rx Data (-) Not Used T1 DATA (IU Rear Panel) 8-pin RJ-45 Female Connector 8 1 WAYSIDE TERM (IU Rear Panel) 9-pin D-type Female Connector 5
µLink System Manual 862-01545 Indoor Unit Connector Pin Details MONITOR (IU Front Panel) 9-pin D-type Female Connector 5 1 9 10 15 Page 36 Details Tx Rx Ground Not Used 6 AUX I/O (IU Rear Panel) 15-pin High Density D-type Female Connector 5 Pin 2 3 5 1, 4, 6, 7, 8, 9 1 6 11 Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Details Relay 1 Common Relay 1 N.O Relay 1 N.O Relay 1 N.C Relay 1 N.C Relay 1 Common Relay 2 Common Relay 2 Common Relay 2 N.O Relay 2 N.O Relay 2 N.
µLink System Manual 862-01545 Indoor Unit Connector Pin Details DC (IU Rear Panel) 2-pin Wieland Polarised 8213 Type + - + DC - OUTDOOR UNIT (IU Rear Panel) 26-pin High Density D-type Female Connector 9 1 10 18 26 Issue 1 Pin 19 Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 - 25 Description Positive Negative Details Tx Data + Tx Data Tx Data GND Tx Clk + Tx Clk Tx Clk GND Rx Data + Rx Data Rx Data GND Rx Clk + Rx Clk Rx Clk GND Rx Cntrl + Rx Cntrl Rx Cntrl GND Tx Cntrl + Tx Cntrl Tx
µLink System Manual 862-01545 Outdoor Unit Connector Pin Details CABLE CONNECTOR (OU Base) A R B C U D E P T S V Y K G Page 38 L X H M Z c W F N a b J Pin A B C D E F G H J K L M N P R S T U V W X Y Z a b c Details 24V 24V TXCTXC+ TXDCLKRXDCLK+ TXDCLK+ N/C RXDCLK+ RXD+ RXCRXDRXC+ TXDTXD+ GND GND GND GND GND GND GND GND GND GND GND Issue 1b
µLink System Manual 862-01545 Chapter 3: Operational Information Introduction to Chapter 3 Chapter 3 provides the user with a description and the location of all controls, indicators and connectors located on the front and rear panels of the µLink Indoor Unit (IU). Indoor Unit (IU) Controls, Indicators and Connectors Front Panel Issue 1 Figure 10 shows all items on the IU Front Panel. Table 6 describes the items shown in the illustration.
µLink System Manual Near Alarm LEDs Status LEDs 862-01545 Far Alarm LEDs Monitor Connector Figure 10. IU Front Panel Controls, Indicators and Connectors.
µLink System Manual 862-01545 Table 6. IU Front Panel: Controls, Indicators and Connectors Item Description Near Alarm LEDs Used to indicate Failure, Service and Site alarms or status. The LEDs are tri-colour to indicate No Alarm (Green), Existing Alarm (Red) and Historic Alarm (Amber) conditions. Refer to Chapter 5, Maintenance Information for more details about these alarms. Far Alarm LEDs As for Near Alarm LEDs. Status LEDs The following status LEDs are located on the IU Front Panel: a.
µLink System Manual 862-01545 Table 7.
µLink System Manual 862-01545 Indoor Unit (IU) Controls, Indicators and Connectors Rear Panel Figure 11 shows all items on the IU Rear Panel. Table 8 describes the items shown in the illustration. Outdoor Unit Cable Connector Data Interface Module DC Power Connector Wayside Traffic Serial Data Connector On/Off Switch AC 3-pin Power Connector Auxiliary I/O Connector Earth Stud Figure 11. IU Rear Panel Controls, Indicators and Connectors.
µLink System Manual 862-01545 Table 8. IU Rear Panel: Controls, Indicators and Connectors Item Description Outdoor Unit Cable Connector 26-pin, High Density D-type female connector for IU/OU interconnection cable. Wayside Traffic Serial Data Connector 9-pin D-type female connector. Used for Wayside traffic channels. DC Power Connector Weiland 2-way chassis mounted connector. Auxiliary I/O Connector 15-pin, High Density D-type female connector.
862-01545 µLink System Manual Chapter 4: µLink Management System General Information The µLink Management Information System is a software tool for the management (installation, maintenance and support) of µLink digital radio links. The software runs on an IBM compatible PC running Windows 95 (user supplied), connected to the Indoor Unit (IU) via a serial communications interface.
µLink System Manual Software and Hardware (supplied by Tellumat) 862-01545 The software is the operator interface to the operation and control of the µLink System. It allows you to perform tasks such as; system configuration, controlling system parameters and accessing on-line help. It is supplied by Tellumat on one 1.44 Mbyte, 3.5 inch stiffy diskette. It is supplied as executable code, supported with installation and other supplementary files.
µLink System Manual 862-01545 Step 6. 7. Action Insert the installation disk of the software into the relevant drive (A or B) of the PC and then select Next. Run *\Setup. exe by selecting Finish (* being the drive identifier). Follow the screen prompts to install the software onto the hard drive of the computer. Accessing the Software Program After installing the software, open the program by selecting the µLink option from the Program Group in the Start Menu.
µLink System Manual 862-01545 Pull-down Menus Area Network Display Area Short-cut Buttons Area Figure 12. µ Link Management Software: Typical Main Screen.
µLink System Manual 862-01545 Pull-down Menus Area The following pull-down menus are available from the Main Screen: File. This menu provides you with an exit option, which allows you to exit from the µLink Management Software. Tools. This menu provides the following options: • Options. This option allows you to select the µLink Management Software terminal serial port. You can select No Port, COM1, COM2, COM3 or COM4. • Local IU/Remote IU.
µLink System Manual Network Display Area 862-01545 The Network Display Area of the Main Screen provides a graphical display showing all the microwave links in the domain. It provides the local and remote site station names and shows you the site to which the µLink Management Software is connected. To view the details of a particular site, simply click on the required site. The Station Control screen for the selected site is displayed (see Figure 13). Figure 13. Typical Station Control Screen.
862-01545 Station Control Screen Issue 1 µLink System Manual See Figure 13. This screen allows you access to the following parameters: a. Indoor Unit • Configuration • Build State • Status b. Outdoor Unit • Configuration • Build State • Status Also provided on the screen are status indicators for both the IU and OU. These blocks are bi-coloured and indicate whether the unit is Online (Green) or Offline (Red).
µLink System Manual Indoor Unit: Configuration 862-01545 This screen allows you configure the following items (see Figure 14): • Wayside Port • Payload Data Interface Port • Bit Error Rate Thresholds To configure the ports, click on the required parameter(s). Configure the BER thresholds as required. Payload is from the user equipment to the IU Payload Data connector and RF Link is from Antenna to Antenna. Note that the thresholds must be entered in scientific notation, eg. 1.0E-6.
µLink System Manual 862-01545 Indoor Unit: Build State This screen (see Figure 15) allows you to view the build state details of the primary hardware and software components of the IU. This information is read from the IU microprocessor. Figure 15. Indoor Unit: Typical Build State Screen.
µLink System Manual Indoor Unit: Status 862-01545 This screen (see Figure 16) allows you to monitor the network’s performance. It provides the following data: • Status of the Near and Far site Fail, Site and Service alarms. • Status of the Rx Sync, Tx Sync, LOS and AIS alarm LEDs. • Transceiver Error Counts for Code Violation, CRC4 and FAS. • Bit Error Rate and Total Blocks of payload data transmitted. If you want to clear the LEDs, simply click on the button.
862-01545 Indoor Unit: Failure Alarm Details µLink System Manual This screen (see Figure 17) provides more detailed information of the Near and Far site Fail alarms. The specific cause of the error is shown by a tick in the adjacent check box of the suspected error. Refer to Chapter 5 of this manual to fault-find the failure alarm. Figure 17. Indoor Unit: Typical Failure Alarm Details Screen.
µLink System Manual Indoor Unit: Site Alarms and Control 862-01545 This screen (see Figure 18) provides more detailed information of the selected sites Site alarms. It also allows you to test alarm relays. The specific cause(s) of the site alarm is shown by a tick in the adjacent check box of the alarm. To trigger (test) a relay, click in the relevant Control checkbox and the click on the button. The selected relay will be triggered. Figure 18.
862-01545 Indoor Unit: Service Alarms µLink System Manual This screen (see Figure 19) provides more detailed information of the selected site’s Service alarms. The specific cause(s) of the alarm is shown by a tick in the adjacent check box of the listed BER warnings. Refer to Chapter 5 of this manual to fault-find the Service alarm. Figure 19. Indoor Unit: Typical Service Alarm Details Screen.
µLink System Manual Outdoor Unit: Configuration 862-01545 This screen allows you configure the following Default and Current OU parameters (see Figure 20): Figure 20. Outdoor Unit: Typical Configuration Screen.
862-01545 Default and Current Parameters µLink System Manual The following parameters can be configured for Default and Current settings: • Transmit Channel. Channel 0 to 11 (see Frequency Band Plan on page 19 of this manual). • Receive Channel. Channel 0 to 11 (see Frequency Band Plan on page 19 of this manual). We recommend that transmit and receive channels be set at least three channels apart. • Transmit Power. 1 to 10.
µLink System Manual Outdoor Unit: Build State 862-01545 This screen allows you to view the following build state details of the primary hardware and software components of the OU (see Figure 21). This information is read from the OU microprocessor. Figure 21. Outdoor Unit: Typical Build State Screen.
862-01545 Outdoor Unit: Status µLink System Manual This screen allows you to view the following OU status information (see Figure 22): • Last Restart • Carrier Detect Present (Y/N) • Received Signal Strength Indication (RSSI) in dBm. • RSSI bar graph Figure 22. Outdoor Unit: Typical Status Screen.
µLink System Manual 862-01545 This page intentionally blank Page 62 Issue 1b
862-01545 µLink System Manual Chapter 5: Maintenance Information Introduction to Chapter 5 Chapter 5 provides the technical personnel with the information necessary to diagnose and repair (by replacement) a fault on the µLink System. Recommissioning information for the µLink is also provided to ensure that the system is functioning correctly after repair or replacement of the LRU/SRU.
µLink System Manual 862-01545 This page intentionally left blank Page 64 Issue 1b
862-01545 µLink System Manual Chapter 6: Functional Description Introduction to Chapter 6 Chapter 6 provides a detailed description of the µLink System as well as a brief description of the Line Replaceable Units (LRUs) comprising the system. This chapter is aimed at providing the service technician with an understanding of the function and operation of the µLink System. µ Link System The µLink System is a Direct Sequence Spread Spectrum Digital Radio operating in the 2.4 GHz ISM frequency band.
µLink System Manual 862-01545 Indoor Unit Information to Follow Page 66 Issue 1b
µLink System Manual 862-01545 Chapter 7: Parts List Introduction to Chapter 7 Chapter 7 identifies, lists and describes all system level user replaceable parts and components comprising the µLink System. Part numbers for reordering purposes are also provided. Parts Lists The columns in the parts lists provide the following information: • Item: Indicates the annotation number referenced in the associated parts list illustration in Figure 23. • Part No.
µLink System Manual 862-01545 1 2 3 4 5 6 Figure 23. µ Link System.
µLink System Manual 862-01545 Table 9. µ Link System Level Parts List Item Part Number Description Qty.
µLink System Manual 862-01545 This page intentionally left blank Page 70 Issue 1b
