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Preface

TB9300 Installation and Operation Manual

© Tait Limited March 2016

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Содержание TB9300

Страница 1: ...TB9300 Base Station Repeater Installation and Operation Manual MBC 00008 12 Issue 12 March 2016...

Страница 2: ...Z700908 NZ708662 NZ710766 NZ711325 NZ714188 AU2004216984 AU2015215962 AU339127 AU339391 AU2015904806 EU000915475 0001 EU000915475 0002 UK1518031 8 US 8301682 US13 542147 US14 032876 US14 495334 US14 7...

Страница 3: ...eration on DC Input 28 1 7 6 Front Panel Fans 31 2 General Safety and Regulatory Information 33 2 1 Personal Safety 34 2 1 1 Unpacking and Moving the Equipment 34 2 1 2 Lethal Voltages 34 2 1 3 AC Pow...

Страница 4: ...Address 58 4 2 7 Setting Up Authentication 59 4 3 Working with the Web Interface 60 4 3 1 Monitoring Operation 61 4 3 2 Viewing Configuration Settings 62 4 3 3 Viewing the Base Station and Network Ide...

Страница 5: ...put 94 5 6 5 Connecting RF 95 5 6 6 Connecting an External Frequency Reference 96 5 6 7 Ethernet Connection 97 5 6 8 Connecting General Purpose Inputs and Outputs 98 6 Maintenance 99 7 Troubleshooting...

Страница 6: ...6 Contents TB9300 Installation and Operation Manual Tait Limited March 2016 Glossary 123 Tait Software License Agreement 133 Directive 1999 5 EC Declaration of Conformity 137...

Страница 7: ...click Configure in the top level menu then in the expanded Configure menu click Base Station and finally click on the Channels tab on that page Within this manual four types of alerts may be given to...

Страница 8: ...etwork System Manual MNB 00003 xx TN9300 DMR Radio Network Node Controller Installation Manual MNB 00001 xx Safety and Compliance Information MBA 00012 xx The characters xx represent the issue number...

Страница 9: ...transmissions AAA Authentication and checking for interference on a receive channel 7 August 2014 General updates for version 1 35 release and the H3 band base station 8 November 2014 General updates...

Страница 10: ...10 Preface TB9300 Installation and Operation Manual Tait Limited March 2016...

Страница 11: ...rotocol communications and to add features through software options ensures that DMR systems designed with the TB9300 are scalable in both size and functionality The TB9300 can also operate as a simpl...

Страница 12: ...web browser configuration alarm monitoring fault diagnosis feature and firmware upgrades Alarms can also be reported via SNMP traps allowing integration with an SNMP based network management system An...

Страница 13: ...into the 4U subrack from the front and is secured at the front with a metal clamp Both clamp and module are easily removed for rapid module replacement The modules are secured laterally with plastic...

Страница 14: ...fans The indicator LEDS allow some monitoring of the operational status of the base station The user controls and display allow the technician to configure the IP address of each module Refer to Fron...

Страница 15: ...sink The 100W PA is also fitted with an airflow duct Both models are designed to operate on the 28VDC output provided by the PMU Power Management Unit The PMU provides the 28VDC power supply for the m...

Страница 16: ...cing each other The airflow separator between the PAs helps to direct the cooling airflow evenly through each heatsink The PMU and each pair of reciters and PAs have their own cooling fans The front p...

Страница 17: ...ter in slot 1 and the PA in slot 3 The single PA is mounted vertically with the heatsink facing the center of the subrack This positions the cooling fins directly behind the fan The airflow separator...

Страница 18: ...directly beside it in slots 3 and 4 The reciter occupies slot 1 Unlike the 50W PAs the 100W PA is mounted horizontally with the heatsink facing upwards It is also fitted with an airflow duct to channe...

Страница 19: ...azil for K and L bands the TB9300 is considered to be configured as a base station with retransmission of receive frequencies Frequency Identification Frequency Band and Sub band 50W 100W B band B2 13...

Страница 20: ...two users can alternately access the same frequency one in each timeslot Base stations on different sites can be linked together to form channel groups A base station can support two channel groups on...

Страница 21: ...cept connections from any Express node standalone node or Access standalone node In single site trunking and fallback modes this license entitles a standalone node to control a single site of up to 20...

Страница 22: ...el see Figure 1 4 A system control bus interconnects the modules and carries alarm and control signaling between the reciter and the other modules refer to Intermodule Communications on page 25 for mo...

Страница 23: ...rd The reciter control board converts information between analog and digital and controls the maintainer s access via the front panel It performs the air interface signal processing for digital DMR op...

Страница 24: ...pass through the digital receiver and are converted to G 711 before being modulated and retransmitted 1 7 2 Online and Offline Modes The base station normally operates in Online mode but you can put i...

Страница 25: ...the reciter and the other modules as shown in Figure 1 7 Specific configuration settings for dual base stations are described in Recommended Configuration Settings on page 80 Figure 1 7 Intermodule c...

Страница 26: ...o protect the battery and base station equipment The standby power supply card maintains the power to the PMU microprocessor while the rest of the PMU is shut down When the battery voltage rises to th...

Страница 27: ...nual Description 27 Tait Limited March 2016 Figure 1 8 Subrack power distribution DC AC 28V Aux DC 28V PMU PA Reciter Subrack Board Front Panel DC AC 28V Aux DC 28V PMU PA 1 PA 2 Reciter 1 Subrack Boa...

Страница 28: ...down limits allow for adjustable startup and shutdown voltages Configure Base Station Miscellaneous These limits can be adjusted for different numbers of battery cells or for the particular requiremen...

Страница 29: ...Voltage 10 9V to 15V 0 3V 10V to 13 5V 0 3V 21 8V to 30V 0 5V 20V to 27V 0 5V 43 6V to 60V 1V 40V to 54V 1V Battery Protection Fail safe Limits Startup Voltage Undervoltage Shutdown Overvoltage Shutdo...

Страница 30: ...hutdown HW Undervoltage Shutdown HW Overvoltage Shutdown Reset HW High Battery Voltage Alarm SW Alarm Low Battery Voltage Alarm SW Alarm Startup Voltage SW Shutdown Voltage SW Startup Voltage HW Run R...

Страница 31: ...an alarm if the fan fails The fans turn on for a few seconds when the base station is powered up and also after the front panel is refitted to a base station which is powered up Configuring Fan Contr...

Страница 32: ...32 Description TB9300 Installation and Operation Manual Tait Limited March 2016...

Страница 33: ...Operation Manual General Safety and Regulatory Information 33 Tait Limited March 2016 2 General Safety and Regulatory Information This chapter provides general information on safety precautions for op...

Страница 34: ...U contains voltages that may be lethal Refer to the ratings label on the rear of the module The equipment must be installed so that the rear of the PMU is located in a service access area which is acc...

Страница 35: ...are when handling a PMU or PA which has been operating recently Under extreme operating conditions 140 F 60 C ambient air temperature or high duty cycles the external surfaces of the PMU and PA can re...

Страница 36: ...EEE C95 1 2005 Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields 3kHz to 300GHz Pour respecter les limites impos es au champ RF au niveau des quipemen...

Страница 37: ...tage See Connecting RF on page 95 for recommendations 2 2 3 ESD Precautions Notice This equipment contains devices which are susceptible to damage from static charges You must handle these devices car...

Страница 38: ...ket of the connection Seals must cover any unused network sockets This includes the Ethernet connector on the rear panel any spare switch ports and the console port on the router and switch The seals...

Страница 39: ...to the following two conditions a This device may not cause harmful interference and b This device must accept any interference received including interference that may cause undesired operation CFR T...

Страница 40: ...nd safety of users as well as electromagnetic compatibility Intended Purpose of Product This product is a radio transceiver It is intended for radio communications in the Private Mobile Radio PMR or P...

Страница 41: ...TB9300 Installation and Operation Manual Operation 41 Tait Limited March 2016 3 Operation This section describes the user controls and indicator LEDs on the front panel and on the base station modules...

Страница 42: ...power LED is lit when power is supplied to the subrack Alarm LED The red alarm LED will flash at a rate of 2 to 5Hz when an alarm has been generated by any of the base station modules It will continue...

Страница 43: ...receiving a valid RF signal Off A base station is not receiving a valid RF signal g h Key Name Function left and right arrow keys Move the cursor to the left or right when entering text Moving the cur...

Страница 44: ...eb interface Identity Identity Base Station Identity From the home screen press an arrow key a scroll key or OK to go to the base station menu The display returns to the home screen from any other scr...

Страница 45: ...tion will depend on which modules are present in the subrack and whether the keypad has been disabled refer to Disabling the Front Panel Keypad on page 65 Modules Reciter 1 Front Panel Base Station Mo...

Страница 46: ...DC modules off 3 2 1 Reciter Front View The indicator LEDs on the front of the reciter are visible through a slot in its front panel These LEDs provide the following information about the state of the...

Страница 47: ...ar of the reciter are on the Ethernet connector These LEDs provide the following information about the state of the reciter steady amber the Ethernet interface is connected flashing green data is bein...

Страница 48: ...een the PA has no application firmware loaded or activated you can use the web interface to download or activate the firmware also see Preparing to Download Firmware on page 66 flashing red one or mor...

Страница 49: ...ervicing procedures AC Module On Off Switch This switch turns the AC input to the PMU on and off Note that this switch breaks only the phase circuit not the neutral The red button remains out whether...

Страница 50: ...ate the firmware also see Preparing to Download Firmware on page 66 flashing red one or more alarms have been generated you can use the web interface to find out more details about the alarms flashing...

Страница 51: ...TB9300 base station Use it to connect to the base station so that you can monitor configure diagnose and calibrate it if required This section describes the following Connecting to the base station in...

Страница 52: ...Using multiple browser windows or tabs you can view more than one base station and more than one page of any base station at once Base stations have a web based interface that provides the pages you v...

Страница 53: ...ke sure that you store the IP address securely and do not lose it 2 A security warning appears when you connect for the first time Proceed anyway refer to Security Certificates on page 55 3 The login...

Страница 54: ...hree characters enter one or two leading zeroes so that each position is filled even though the zeroes are not part of the address For example enter 172 25 163 47 as 172 025 163 047 Leading zeroes are...

Страница 55: ...certificates to the base stations you can configure all maintainers web browsers to accept security certificates from your own Certification Authority Before you have uploaded a security certificate t...

Страница 56: ...Properties dialog box click Internet Protocol Version 4 TCP IPv4 and then click Properties 6 Click Alternate Configuration 7 Select the User configured option and then enter a number that is on the s...

Страница 57: ...he base station You can use either a straight through or crossover Ethernet patch cable with the current base station firmware 2 Select Start Settings Network and Dialup Connections 3 Double click the...

Страница 58: ...base station s IP address via the front panel as long as access to this menu has not been disabled 3 The link to the base station is down Use ping to check 4 You may have to bypass the proxy in your o...

Страница 59: ...ss to all base stations in a network you no longer need to change the password in each base station individually previously used passwords may be excluded from re use access can be denied after a set...

Страница 60: ...then click on the appropriate tab on that page to display the required information Click the icon on a menu item to expand the menu tree and the icon to collapse it again Press F11 for a full screen d...

Страница 61: ...Stations from Your PC 61 Tait Limited March 2016 4 3 1 Monitoring Operation Using the monitoring pages you can see how the base station is currently operating For example you can see the status of it...

Страница 62: ...Interfaces Network always apply Others are channel based so that they can be dynamically changed To view these you first need to know the channel that the base station is operating on Select Identity...

Страница 63: ...identity Select Identity Identity and then Base Station or Network to view details such as name default channel and network addresses Note that the Host name field has a maximum of 63 characters and...

Страница 64: ...n offline in order to carry out diagnostic tests or to take it out of service if a fault develops 1 Click Mode on the status bar or Select Tools Tools Base Sta tion 2 Under Control select Offline Clic...

Страница 65: ...recommend that you do this when the base station is commissioned This report can be useful later if there is a problem with the base station Comparing the original report with the later one may highli...

Страница 66: ...ies files into a folder and adds items to the Windows Start menu Start Programs Tait Applications TB9300 From the Start menu you can then access the Help licenses manuals and release notes for each fi...

Страница 67: ...e server you can temporarily override the package server IP address and port in each base station 1 Run Mongoose on the temporary package server Start Programs Tait Applications TB9300 Mongoose 2 Wind...

Страница 68: ...he unwanted package before downloading another 4 4 8 Checking for Interference on a Receive Channel You can use the Signal Level page Diagnose RF Interface Signal Level to look for sources of interfer...

Страница 69: ...provides information on the site requirements for your TB9300 equipment and also describes how to install the base station in a standard 19 inch rack or cabinet If this is your first time installing...

Страница 70: ...e site and its equipment that you take adequate precautions against lightning strike Because it is outside the scope of this manual to provide comprehensive information on this subject we recommend th...

Страница 71: ...are covered with a filter mesh or grille the open area must be increased to allow the same airflow as an unrestricted opening The maximum ambient temperature entering the cabinet must not exceed 140...

Страница 72: ...and Operation Manual Tait Limited March 2016 Figure 5 1 Typical cabinet ventilation requirements b ventilation slots d airflow entry c blanking panels e airflow exit path 8in 20cm 2U 7in 17 5cm side...

Страница 73: ...h up to 62lb 28kg or up to 66lb 30kg complete with packaging We recommend that you have another person help you unpack and move the equipment The TBAA03 16 carrying handles will make it easier to move...

Страница 74: ...cushion carefully over the rear of the subrack g so that it is the right way up with the cushion on top h Remove the cushion from the top of the subrack i Disposal of Packaging If you do not need to...

Страница 75: ...H 330MHz to 380MHz K 400MHz to 440MHz L 440MHz to 480MHz M 470MHz to 520MHz R 400MHz to 440MHz receive R 440MHz to 480MHz transmit N 762 MHz to 870MHza Q 896MHz to 902MHz receive Q 927MHz to 941MHz t...

Страница 76: ...76 Installation TB9300 Installation and Operation Manual Tait Limited March 2016...

Страница 77: ...odule fitted 2 24V DC module fitted 4 48V DC module fitted TBA3XXX XXXX 0 standby power supply card not fitted 1 12VDC standby power supply card fitted 2 24VDC standby power supply card fitted 4 48VDC...

Страница 78: ...ssword tuning the base station if required 5 4 1 Confirming Operation Notice Make sure that the RF output is connected to a suitable atten uator or dummy load Do not remove the load while the PA is tr...

Страница 79: ...a suitable RF source Diagnose RF Interface Receiver transmitter operation requires connection to the network Diagnose RF Interface Transmitter ping checks the IP connection to another device with an...

Страница 80: ...battery voltages fan control NTP and package servers 3 Make the changes needed in each form and click Save We recommend that you save the configuration to your PC or network First make a backup copy o...

Страница 81: ...ll known Knowledge of the password could be used to render the equipment inoperable for example by deleting files If you are concerned about the security risk that this poses change the password If Ta...

Страница 82: ...ng on the model B2 136 to 156MHz B3 148 to 174MHz Each of these bands is split into 2 sub bands B2 136 to 146MHz and 146 to 156MHz B3 148 to 159MHz and 159 to 174MHz Each sub band has its own helical...

Страница 83: ...in Figure 5 3 to obtain a peak RSSI reading This reading should be within 1dB of the reading at the previous frequency Adjust the center resonator of the filter first followed by the two outer resona...

Страница 84: ...me helical filter shown in Figure 5 4 below The bandwidth of the helical filter is approximately 5MHz To check the RSSI level and tune the receiver front end if required follow these steps 1 Remove th...

Страница 85: ...ch resonator should require approximately the same amount of adjustment when tuning If tuning to a lower frequency adjust the slug in clockwise for a higher frequency adjust the slug out counterclockw...

Страница 86: ...ut is equal to the power of one of them multiplied by the square of the number of sources Cables components and hardware must be rated to withstand the peak envelope power During the commissioning pro...

Страница 87: ...es from the subrack before moving it refer to Replacing Modules on page 103 In all cases follow safe lifting practices 1 Remove the front panel as described in Preliminary Disassembly on page 105 2 Fi...

Страница 88: ...Figure 5 6 below gives the dimensions of the subrack and its mounting holes Figure 5 6 Subrack dimensions 5 25 in 133 4 mm 4 in 101 6 mm 6 96 in 176 8 mm 14 8 in 375 5 mm 19 in 482 6 mm 17 in 432 mm...

Страница 89: ...kets to suit your installation Notice You must fit the auxiliary support brackets if you intend to transport a cabinet fitted with a fully built up base station We also recommend that you fit the brac...

Страница 90: ...n the ends of the cables do not have to support the full weight of the cables Figure 5 8 shows two recommended methods of securing these cables to prevent straining either set of terminals We recommen...

Страница 91: ...of a dual 50W base station are identified in Figure 5 9 External connections are all located at the rear of the subrack Figure 5 9 50W base station inputs and outputs b serial RS 232 connectora h VDC...

Страница 92: ...r supply capable of providing at least 600W The requirements of two typical AC supplies are given in the following table Your base station should come supplied with a power supply cord to connect the...

Страница 93: ...from the DC converter itself It disables the converter by switching off its control circuitry Even when the DC converter is off the DC input is still connected to its power circuitry The DC input lead...

Страница 94: ...re before reaching their power limit The failure or switching off of one auxiliary board will not load any other paralleled auxiliary boards in the circuit The auxiliary power supply turns off briefly...

Страница 95: ...lator or duplexer between the PA and the load Fit the isolator as close as pos sible to the RF output connector on the PA Do not connect any switching equipment between the isolator and the PA unless...

Страница 96: ...rts per billion The reciter automatically detects the frequency of the external reference and configures itself accordingly If an external reference is required enable the external reference Absent al...

Страница 97: ...45 socket on the reciter s rear panel provides the 10BASE T or 100BASE T Ethernet connection to the other devices in the network Use Cat 5 cable to connect this socket to the Tait Network via a router...

Страница 98: ...re used in this release of the base station Pin Signal Name Signal Type Notes 1 not used reserved for future use 2 3 4 5 6 7 8 9 10 11 digital in 1 input 5V TTL logic active low 12 digital in 2 13 5 2...

Страница 99: ...after three months of operation and then annually for H band reciters or every three years for B band reciters The calibration procedure is described in the Help Calibrate Reciter Internal reference a...

Страница 100: ...arch 2016 Cooling Fans The cooling fans have a long service life and have no special maintenance requirements You can use the web interface to configure the base station to generate an alarm if any of...

Страница 101: ...Configure Base Station Miscellaneous Power LED flashing fans are running but display is blank The base station is downloading firmware Use the web interface to monitor the progress of the firmware dow...

Страница 102: ...102 Troubleshooting TB9300 Installation and Operation Manual Tait Limited March 2016...

Страница 103: ...o avoid personal injury Notice The cooling fans are mounted on the front panel and will only operate when the panel is fitted correctly to the front of the subrack To ensure adequate airflow through t...

Страница 104: ...a If you are unsure whether you have a record of the configuration backup and save the configuration file before removing any modules Once you have replaced the module you will be able to restore the...

Страница 105: ...nect the DC input and RF input first followed by the RF output After refitting the PA reconnect the RF output first followed by the RF input and then the DC input Disconnecting the Power If you want t...

Страница 106: ...the front panel and pull the front panel away from the subrack Cable Retaining Clips The cable retaining clips are used to hold cables in position at the top of the subrack so that they do not interf...

Страница 107: ...nplug the RF input cable b any system cables c and the external reference d and 1PPS e cables if fitted 3 At the front of the reciter unplug the RF output cable f and move it to one side Unplug both e...

Страница 108: ...nnect all the front and rear panel cables previously disconnected Ensure the front panel cables are positioned correctly and retained where required by the cable retaining clips in the top of the subr...

Страница 109: ...lug the RF output cable 4 Loosen the screw securing the retaining clamp s e and rotate the clamp s through 90 to clear the module 5 Slide the PA out of the subrack taking care not to damage any of the...

Страница 110: ...110 Replacing Modules TB9300 Installation and Operation Manual Tait Limited March 2016 6 Carry out the instructions in Final Reassembly on page 114...

Страница 111: ...sen the screws securing the retaining clamps e and rotate the clamps through 90 to clear the module 5 Slide the PMU out of the subrack taking care not to damage any of the cables Refitting 1 Slide the...

Страница 112: ...de rail up pull the guide rail towards the front of the subrack c and lift it clear of the slots 2 Top Rails a Insert a small flat blade screwdriver under the rear end of the guide rail and lift it sl...

Страница 113: ...spring washers b securing the right end of the board to the subrack 4 Remove the D range cover c 5 Remove the two retaining clamps d securing the left end and centre of the board 6 Remove the board Re...

Страница 114: ...e cut outs b required for the 100W PA RF and DC cables The break off tab c will also still be present and will jam on the system control bus Do not try to fit this front panel to a 100W base station o...

Страница 115: ...panel onto the locating pegs on the subrack c Secure each fastener with a quarter turn clockwise d Push the self aligning D range connector c fully in 4 Before powering up the base station check that...

Страница 116: ...116 Replacing Modules TB9300 Installation and Operation Manual Tait Limited March 2016...

Страница 117: ...ee Connecting General Purpose Inputs and Outputs on page 98 Ethernet Connector PMU Auxiliary DC Output The pin allocations for the auxiliary DC output on the PMU are given in the following table Pin D...

Страница 118: ...118 Appendix A Interface Pin Allocations TB9300 Installation and Operation Manual Tait Limited March 2016...

Страница 119: ...ection from the PMU The other modules in the subrack are powered from the PMU via the subrack interconnect board The DC supply to the reciters is via the system control bus ribbon cable Dual 50W base...

Страница 120: ...powered by a direct connection from the PMU The reciter is powered from the PMU via the subrack interconnect board and system control bus ribbon cable Single 50W base station inter module connections...

Страница 121: ...ly The PA is powered by a direct connection from the PMU The reciter is powered from the PMU via the subrack interconnect board and system control bus ribbon cable 100W base station inter module conne...

Страница 122: ...122 Appendix B Inter Module Connections TB9300 Installation and Operation Manual Tait Limited March 2016...

Страница 123: ...tocol used to map IP network addresses to the hardware addresses used by a data link protocol base station A radio receiver and transmitter that is located in a specific place at a site that enables a...

Страница 124: ...channel table The base station s database of channel configurations CODEC A device which combines analog to digital conversion coding and digital to analog conversion decoding colour code A marker det...

Страница 125: ...which the PA is transmitting EIA Electronic Industries Alliance Accredited by the American National Standards Institute ANSI and responsible for developing telecommunications and electronics standards...

Страница 126: ...n front panel The cover over the front of the base station containing the indicator LEDs four line LCD display user controls and cooling fans gating The process of opening and closing the receiver gat...

Страница 127: ...r kernel The core executable of an operating system LAN Local Area Network A computer network that interconnects computers in a limited area such as a single building or group of buildings LED Light E...

Страница 128: ...8 bits Offline mode A mode of operation in which active service is suspended so that special operations can be carried out such as programming in a new configuration or carrying out certain diagnostic...

Страница 129: ...ut interface The interfaces can be of different types RS 232 A protocol for serial communications between a DTE data terminal equipment and a DCE data communications equipment device RS 485 An updated...

Страница 130: ...lay and log syslog messages from many devices syslog protocol A standard protocol used for the transmission of event notification messages across IP networks TB9300 base stations can send messages suc...

Страница 131: ...ced Greenwich Mean Time valid signal A signal that the receiver unmutes to A signal is valid for example when it is strong enough to be decoded and when it has the specified NAC VDP Voice Data Protoco...

Страница 132: ...llation and Operation Manual Tait Limited March 2016 watchdog A circuit that checks that the system is still responding If the system does not respond because the firmware has locked up the circuit ge...

Страница 133: ...ctions de compilations disas semblies emulations enhancements fixes mod ifications translations and updates to or deriva tive works from the Software or Documentation whether made by Tait or another p...

Страница 134: ...l use of the Software 4 3 Unless otherwise authorized by Tait in writ ing Licensee will not and will not enable or allow any third party to i install a copy of the Software on more than one unit of a...

Страница 135: ...subcontractor integrator is purchasing Tait Designated Prod ucts and licensing Software not for its own inter nal use but for end use only by a Customer the Licensee may transfer such Software but on...

Страница 136: ...IVAL Sections 4 5 6 3 7 8 9 10 and 11 survive the termination of this Agree ment 11 7 ORDER OF PRECEDENCE In the event of inconsistencies between this Agreement and any other Agreement between the par...

Страница 137: ...kuuttaa t ten ett TBCB1D TBCB1E TBCH0D TBCH0E tyyppinen laite on direktiivin 1999 5 EY oleellisten vaatimusten ja sit koskevien direktiivin muiden ehtojen mukainen Katso www taitradio com eudoc fr Fra...

Страница 138: ...138 TB9300 Installation and Operation Manual Tait Limited March 2016...

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