Park Air Systems BT6MBS User Manual User Guide

Park Air Systems Limited User Guide

User Guide

T6M Base StationUser GuideHandbook Part Number: 31-360T6MBS
Handbook Title: T6M Base Station User GuideHandbook Part Number: 31-360T6MBSIssue Number: oneDate of Issue: September 2000Published by: Park Air ElectronicsNorthfieldsMarket DeepingPeterboroughEnglandTelephone: From UK, 01778 345434From outside UK, 44 1778 345434Fax: From UK, 01778 342877From outside UK, 44 1778 342877T6M Base Station User GuidePage 2
Amendment RecordAmendments to this User Guide, initiated by PAE, are recorded in the following table.AmendmentNumberIncorporatedby:Date Brief DetailsModification RecordModifications to the T6M base station, authorized by PAE, are recordedin the following table.ModificationNumberEmbodied by: Date Brief DetailsT6M Base Station User GuidePage 3Changes or modifications to the T6M base station that are not expressly approved byPark Air Electronics could void your authority to operate the equipment.
SAFETYWarnings[Failure to comply with warnings can result in personal injury, fire, or electric shock.]qDO NOT operate equipment at high volume levels. Hearing experts advise against continuoushigh volume operation. If you experience ringing in your ears, reduce the volume level, ordiscontinue use.qThe Radio module's power amplifier circuit contains beryllium oxide that can be extremely toxic.No instructions within this user guide remove any of the radio module's covers so users are notexposed to a potential beryllium hazard. If the radio module is to be disposed of, users must beaware of current disposal regulations regarding equipment containing beryllium.qThe antenna used with this radio equipment must be installed such that the resultant radiatedfield strength is below 10 W/m²in areas normally accessible to personnel.qThe base station can be fitted with an optional internal battery. It is a sealed lead-acid type with athixotropic electrolyte. The battery has self sealing safety vents that may release small quantitiesof gas under extreme conditions. Because of this, users must ensure that the enclosure's ventsare always free from obstruction.FEDERAL COMMUNICATIONS COMMISSION (FCC) REGULATIONSqThis device complies with Part 15 of the FCC Rules. Operation is subject to the condition that thisdevice does not cause harmful interference.qYou are required to obtain a station licence before transmitting from your base station.qThis equipment is only licenced for operation on 25 kHz channel spacing. Operation on 8.33 kHzchannel spacing is not allowed within the USA.qThe base station power output must not exceed the output necessary for satisfactory technicaloperation taking account of local conditions and the area to be covered.qThe base station's frequency and parameters should be checked by authorized servicepersonnel before use, and at least yearly thereafter.T6M Base Station User GuidePage 4
FOREWORDThis user guide describes the purpose, installation, and operation of the Park Air Electronics (PAE) T6Mbase station. Read all instructions given in this user guide before operating the equipment.TRADEMARKSThe following trademarks are used in this user guide.IBM Is a registered trademark of International Business Machines.Microsoft Is a registered trademark of Microsoft Corporation in the USA and other countries.Windows Is a registered trademark of Microsoft Corporation in the USA and other countries.T6M Base Station User GuidePage 5
T6M Base Station User GuidePage 6CONTENTSSAFETY 4Federal Communications Commission (FCC) Regulations 4Foreword 5Trademarks 5Chapter 1 - Overview 9About this Handbook 9Associated Handbook 9Introduction to the T6M Base Station 9Facilities 10Remote Controllers 10Power Supplies 10Programming the Base Station's Personality 10Options 11Internal Battery 11Rack Mount Option 11Local Monitoring of Transmitted Audio 11Chapter 2 - Specification 13General 13Dimensions and Weight 14Input Supplies 14ac Supply 14dc Supply 14Optional Internal Battery 14Receive Circuit 15Transmit Circuit 15Chapter 3 - Operation 17Introduction 17Front Panel Controls 18Display 18Transmit Indicator 18Busy Indicator 18Power Indicator 18Microphone/Diagnostics Connector 18Volume Control 18External Tx Inhibit Indicator 18Battery Indicator 18Loudspeaker Grille 18PRI Button 19SQL Button 19SELsand SELtButtons 19
T6M Base Station User GuidePage 7CHsand CHtButtons 19SCN Button 19VOLsand VOLtButtons 19Power Button 19Switching On and Off 20Operating the Base Station in Normal Mode 21Selecting Normal Mode 21Selecting a Channel Frequency 21Transmitting and Receiving 21Switching and Adjusting the Squelch Facility 21Operating the Base Station in Priority Mode 23Selecting Priority Mode 23Selecting a Priority Channel Frequency 23Transmitting and Receiving 23Operating the Base Station in Scan Mode 24Selecting Scan Mode 24Selecting a Scan Group 24Transmitting and Receiving 24Programmable Options 25Display Blanking 25Warning Beeps 25Key Beeps 25Transmit Inhibit 26Maximum Transmit Time 26Front Panel Display for 25 kHz and 8.33 kHz Channel Spacing 26Fault and Error Codes 28Chapter 4 - Installation 29Introduction 29Unpacking 30Setting Internal Links 30Siting the Base Station 31Connecting a T6M Controller to the Base Station 31Connecting an antenna 31Connecting the Chassis Stud to Earth 31Connecting a microphone 32Securing the Microphone Bracket 32Connecting External Facilities 33Connecting a dc Input Supply 35Connecting an ac Input Supply 36Connecting a PC to the Base Station 36Chapter 5 - Programming the Base Station 37Introduction 37Programmable Options 39Display Blanking 39
T6M Base Station User GuidePage 8Warning Beeps 39Key Beeps 39Hold on Scan Mode 40Installing the Programming Software onto a Laptop, or PC 40Creating a New Personality 40Saving a Personality 44Opening a Saved Personality 45Loading a Personality into the Radio 45Reading a Personality from the Radio 45Printing a Personality Report 46Chapter 6 - Spares 47Introduction 47List of Spares 47Chapter 7 - Maintenance 49Scheduled Maintenance 49Test Equipment Required 49Test Lead 49Transmit Power and Frequency Accuracy Test 50Receiver Sensitivity Check 52Battery Replacement 52Fault Finding 53Replacing Modules 55Chapter 8 - Figures 57
Chapter 1 - OverviewThis chapter gives a brief overview of the T6M base station and its facilities.ABOUT THIS HANDBOOKThis handbook describes the Park Air Electronics (PAE) T6M Base Station. Its purpose is to provide theinformation necessary for users to install, operate, and maintain the equipment to module level. Toachieve this, the handbook is divided into eight chapters as follows:Chapter 1. Gives a brief overview of the equipment and its facilities.Chapter 2. Provides the equipment specification.Chapter 3. Details the equipment's controls, indicators and connectors, and provides theoperating instructions.Chapter 4. Provides detailed installation procedures and defines all interfaces.Chapter 5. Describes how the base station's ‘personality’ can be changed.Chapter 6. Lists the spares available for the base station.Chapter 7. Gives maintenance information.Chapter 8. Contains the A3 size figures that are referred to throughout this user guide.Associated HandbookWhen reading this handbook it may be necessary to refer to the following handbook:T6M Controller User Guide. Part number 31-3600T6MC.INTRODUCTION TO THE T6M BASE STATIONThe T6M multichannel base station provides two-way communication within the VHF aeronauticalfrequency band 118 to 136.9916 MHz. The radio provides a nominal 10 watt amplitude modulated (AM)output, and operates on both 25 kHz and 8.33 kHz spaced channel frequencies. A fist microphone, withan integral PTT switch, is provided for transmissions; received signals are monitored through the built-inloudspeaker.Before use, the radio's ‘personality’ is programmed into its internal memory. The personality defines upto 760 channel frequencies, the required operating modes, and various secondary options. Threeoperating modes are available: Normal, Priority, and Scan.Normal Mode In normal mode, any channel frequency programmed into the base station canbe selected using the front panel controls. Up to 760 channel frequencies canbe programmed into the radio's personality.Priority Mode Priority mode allows faster access to frequently used channels. Up to 15 of thechannel frequencies that are available in Normal mode can be programmedinto the priority list.Scan Mode If scan mode is selected, the radio scans a number of pre-defined channelssearching for a ‘busy’ one. When a busy channel is found, and depending onthe programmed options, the radio remains tuned to that channel. Up to 15scan groups can be set up, each group containing up to 15 channelfrequencies.T6M Base Station User GuidePage 9
FACILITIESA facilities connector is fitted to the base station's rear panel. It provides the following interfaces:qAudio in/out and PTT control for connection to a Voice Communication and Control System(VCCS).qAudio out for connection to a tape recording system.qAn audio operated squelch signal that allows an external ‘busy’ indication.qA transmit inhibit input signal. This input may be used to prevent the base station being keyed.REMOTE CONTROLLERSUp to four T6M Controllers can be connected to a base station. Each controller allows remotetransmission and reception on the frequency currently selected at the base station. Full details of thecontroller are contained in the T6M Controller User Guide.POWER SUPPLIESThe base station can operate from an ac mains supply, an external dc supply, or an internal battery (see‘Options’ on page 11). When both an ac and a dc supply are connected, the base station operates fromthe ac input; the dc input acts as a backup in case the mains fails.PROGRAMMING THE BASE STATION'S PERSONALITYThe base station's ‘personality’ is programmed into its internal memory and defines up to 760 channelfrequencies, the required operating modes, and various secondary options. When the equipment isreceived from PAE, the personality is either:qA personality programmed to the user's specific requirements.or,qA default personality that covers the 760 channels (25 kHz spaced) available in the VHFaeronautical frequency band. No frequencies are allocated to the priority list, and no scangroups are set.A programming kit is available from PAE. This allows a new personality to be programmed into the radioat any time.The kit comprises software loaded on a CD-ROM, and a programming lead. An IBM™ compatiblelaptop, or Personal Computer (PC) running Microsoft Windows™ 95 or 98 must be available toreprogramme the radio.To order the programming kit, contact PAE quoting part number 70-T6MPMKIT.T6M Base Station User GuidePage 10
OPTIONSInternal BatteryAn internal battery can be fitted to act as a backup should the ac mains supply fail. This option may berequired when no external dc backup supply is available.The battery is float charged from the ac supply. If the mains fails, the battery provides a minimum twohours of operation, at 25°C, provided the duty cycle does not exceed 10%. When operating from theinternal battery, the transmit power output is reduced by up to 3 dB.When the battery option is fitted, link JP2 on the interface module must be correctly set (see ‘SettingInternal Links’ in the installation chapter).Rack Mount OptionThe base station is normally supplied in a free-standing desktop polymer enclosure. As an option, thebase station's chassis can be fitted in a metal enclosure suitable for 19 inch (483 mm) rack mounting.Local Monitoring of Transmitted AudioNormally, transmit and received audio is monitored through the base station's internal loudspeaker; thisallows a base station operator to monitor both sides of voice traffic when remote controllers are beingused. Alternatively, the equipment can be configured so that only receiver audio is monitored through theloudspeaker.This facility is enabled by setting link JP1 on the interface module (see ‘Setting Internal Links’ in theinstallation chapter).T6M Base Station User GuidePage 11
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Chapter 2 - SpecificationChapter 2 gives the specification of the T6M base station.GENERALThe general parameters of the T6M base station are listed below.Operation Simplex VHF AM transmit and receive.Operating modes Normal, priority, and scan.Channel bandwidth 25 kHz and 8.33 kHz.Frequency range (at 25 kHz) Between 118 and 136.975 MHz.Frequency range (at 8.33 kHz) Between 118 and 136.9916 MHz.Frequency stability ±1.5 ppmChannel selection In Normal mode up to 760 channel frequencies can beprogrammed into the radio. The channels can have25 kHz spacing, 8.33 kHz spacing, or a mixture of both.Priority mode allows up to 15 of the stored channels tobe allocated to a priority list. Channel selection can thenbe limited to those frequencies in the priority list.In Scan mode, the radio can have up to 15 scan groupseach containing up to 15 channel frequencies.Duty cycle (receive) Continuous.Duty cycle (transmit) 25% with a maximum transmit time of 5 minutes. Alonger transmit time, or a higher duty cycle, reduces theoutput power by up to 6 dB.When the base station operates from the optionalinternal battery, a duty cycle above 10% rapidlydischarges the battery (see ‘Optional Internal Battery’ onpage 14).Operating temperature range Between -20°C and +55°C.Storage temperature range Between -40°C and +70°C.Humidity Can be operated in humidity up to 80%.Cooling Fan assisted air flow. Fan turns on at approximately40°C; the fan's speed increases as temperatureincreases.T6M Base Station User GuidePage 13
DIMENSIONS AND WEIGHTThe dimensions and weight of the base station fitted within the standard enclosure are:Width 446 mm.Height 176 mm.Depth 400 mm.Weight 9.5 kg without battery option fitted.11.5 kg with battery option fitted.The dimensions and weight of the rack mounted base station are:Width 483 mm.Height 89 mm (2U).Depth 423 mm.Weight 9 kg without battery option fitted.11 kg with battery option fitted.INPUT SUPPLIESThe base station can operate from an ac mains supply, or an external dc input supply. When bothsupplies are connected, the dc supply acts as a backup supply should the mains fail.ac SupplyThe base station requires the following ac input supply:Input voltage Between 98 and 254 V ac at either 50 or 60 Hz.Maximum current 2 A.dc SupplyThe base station requires the following dc input supply:Input voltage Between 12 and 15.5 V. For maximum transmitter outputpower, the dc input must be between 14 and 15.5 V.Maximum current 9 A.OPTIONAL INTERNAL BATTERYAn optional internal battery can be fitted to power the base station when external supplies fail. Thebattery provides:Voltage 12 V dc.Operating time The battery provides at least two hours of operationwhen the duty cycle does not exceed 10% (measured ata working temperature of 25°C). The transmitter outputpower is reduced by up to 3 dB during battery operation.T6M Base Station User GuidePage 14
RECEIVE CIRCUITThe specification of the receive circuit is listed below.Sensitivity -104 dBm at 30% modulation depth for 10 dB (S+N):N.Selectivity 8.33 kHz spaced: <6 dB at ±3 kHz; >60 dB at ±8.33 kHz.25 kHz spaced: <6 dB at ±8.5 kHz; >70 dB at ±25 kHz.Intermodulation suppression >70 dB.Spurious response suppression >80 dB.Audio power output 2 W into 8 ohm integral speaker (<10% THD).Distortion <10% THD for 90% modulation depth.RF input impedance 50 ohms.TRANSMIT CIRCUITThe specification of the transmit circuit is listed below.RF output power Adjustable between approximately 5 and 12 W.Spurious <-46 dBm when more than 1 MHz from the carrier.Harmonics <-36 dBm.Modulation depth Up to 85%. Compression above 85% to prevent overmodulation.RF load impedance 50 ohms.Frequency stability ±1.5 ppm.T6M Base Station User GuidePage 15
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Chapter 3 - OperationThis chapter gives the instructions for operating the base station after it has been correctly installed.Users should note that the facilities available to an operator depend on how the radio's personality hasbeen configured.INTRODUCTIONThe base station provides transmission and reception on any 25 kHz, or 8.33 kHz, spaced channelfrequency within the VHF aeronautical frequency band between 118 and 136.9916 MHz. However, onlythose frequencies and operating modes that are pre-programmed into the radio can be selected. Theradio can be reprogrammed at any time using the supplied software. Instructions for doing this are givenin chapter 5 starting on page 37.Three operating modes are available: Normal, Priority, and Scan. In Normal mode, any frequencyprogrammed into the system can be selected using the radio's front panel controls. Priority mode issimilar to Normal mode, but allows faster selection of up to 15 frequently used channels.In Scan mode, the radio scans a number of pre-defined channels searching for a ‘busy’ one. When abusy channel is found, and depending on the programmed options, the radio remains tuned to thatchannel ready for use. Scanning can be resumed at any time.The following topics are covered in this chapter:qDescription of front panel controls and indicators; page 18.qSwitching on and off; page 20.qOperating the base station in normal mode; page 21.qOperating the base station in priority mode; page 23.qOperating the base station in scan mode; page 24.qProgrammable options; page 25.qFront panel display for 25 kHz and 8.33 kHz channel spacing; page 26.qFault and error codes; page 28.T6M Base Station User GuidePage 17When a T6M base station is received from PAE, the personality is either:qA personality programmed to the user's specific requirements.or,qA default personality that covers the 760 channels (25 kHz spaced) available in the VHFaeronautical frequency band. No frequencies are allocated to the Priority list, and no scangroups are set.A programming kit is available from PAE. This allows a new personality to be programmed and downloaded.The radio does not have to be removed from its installed position to download a new personality.Note that operation using 8.33 kHz channel spacing is not currently allowed within the USA.
FRONT PANEL CONTROLSDisplay(Figure 3, Item 1). In Normal mode, the display shows the currently selected channel frequency. InPriority mode, the display shows the channel frequency but alternates to show a ‘P’ every few seconds.In Scan mode, and when the radio is scanning, the display shows Scn and the currently selected scangroup (a number between 1 and 15). When a busy channel is found, the channel's frequency isdisplayed.The display, in the event of a detected unserviceability, shows fault and error codes.Transmit Indicator(Figure 3, Item 2). A red indicator that lights when the transmitter is keyed and producing power.Busy Indicator(Figure 3, Item 3). A yellow indicator that lights when a signal, of sufficient strength to overcome thesquelch circuit, is received. This indicator is always lit when the squelch facility is switched off.Power Indicator(Figure 3, Item 4). A green indicator that lights when the radio is switched on by pressing the front panelPower button. The front panel Power button cannot be operated unless the rear panel power switch is setto on. Note that when the radio is switched off using the front panel Power switch, and the rear panelswitch remains at on, the internal battery (if fitted) continues to charge.Microphone/Diagnostics Connector(Figure 3, Item 5). A 7-pin DIN socket used to connect the fist microphone normally supplied with thebase station. This connector will also accept a microphone/headset; the connector's pin-out is shown onpage 32.This socket is also used to connect the base station to a laptop, or PC, so that the base station'spersonality can be programmed.Volume Control(Figure 3, Item 6). A rotary control used to adjust the volume of the internal loudspeaker. The control hasan integral switch: when the control is pushed in, the loudspeaker is switched on; when the control ispulled out, the loudspeaker is switched off.External Tx Inhibit Indicator(Figure 3, Item 7). A red indicator that flashes when the external Tx inhibit facility is active. When active,the transmitter cannot be keyed on any frequency.External Tx Inhibit is set, if required, by physically connecting pin 14 on the rear panel Facilitiesconnector to earth (see ‘Connecting External Facilities’ in chapter 4).Battery Indicator(Figure 3, Item 8). This indicator is used only when the internal battery option is fitted. When the batteryis charging, the indicator is amber. When the battery is charged to approximately 75% of its maximum,the indicator changes to green.Loudspeaker Grille(Figure 3, Item 9). The base station's internal loudspeaker is fitted behind this grille.T6M Base Station User GuidePage 18
PRI Button(Figure 3, Item 10). The Priority button is used to select Priority mode operation. This mode can only beselected when it is programmed into the base station's personality.The Priority button is also used in the sequence to enter Test mode.SQL Button(Figure 3, Item 11). Used to switch the squelch facility on and off; it must be switched on before thesquelch level is adjusted by using the VOLsand VOLtbuttons . The Squelch button is also used in thesequence to enter Test mode.SELsand SELtButtons(Figure 3, Item 12). The Select buttons have different functions for different operating modes.In Normal mode, the select buttons skip through the programmed channel frequencies 10 channels at atime. These buttons are used in conjunction with the CHsand CHtbuttons to select the requiredchannel frequency.In Priority mode, these buttons are used to select the required Priority channel frequency.In Scan mode, these buttons are used to select the required scan group.These buttons are also used in the sequence to enter Test mode and as a coarse adjustment whensetting the transmitter's output power.CHsand CHtButtons(Figure 3, Item 13). The Channel buttons have different functions for different operating modes.In Normal mode, the channel buttons are used to select, the required channel frequency.In Scan mode, these buttons are used to resume scanning after a busy channel has been found and theradio is paused, or on hold.These buttons are also used as a fine adjustment when setting the transmitter's output power.SCN Button(Figure 3, Item 14). This button is used to switch on and off Scan mode. The scan button is also used inthe sequence to enter Test mode.VOLsand VOLtButtons(Figure 3, Item 15). The Vol buttons are used to adjust the receiver's squelch threshold. These buttonsdo not adjust the loudspeaker volume.Power Button(Figure 3, Item 16). The power button is used to switch on and off power to the radio circuits. When usingthis switch, it must be pressed, and kept pressed for approximately one second until the front paneldisplay shows On or Off.Note...In addition to the front panel Power button, there is also a Power on/standby switch fitted on therear panel (see ‘Switching On and Off’ on page 20).Warning!Neither the Power button, nor the rear panel Power switch, isolates the input supply from theequipment. Lethal voltages are still present in the base station's internal power supply. Toensure safe working during maintenance, the ac and dc input supplies must bedisconnected from the base station.T6M Base Station User GuidePage 19
SWITCHING ON AND OFFTo switch on the base station:(1) Ensure the Supply switch fitted to the base station's rear panel is set to on. Note that there isno front panel indication as to whether the rear panel supply switch is on or set to standby.(2) Press the front panel Power button for approximately one second until the display reads ‘On’.Then release the button.(3) Check that a warbling sound is heard for a few seconds and then a channel frequency isdisplayed.(4) The base station is now ready for use.To switch off the base station, press the Power button until the display reads ‘Off’. Then release thebutton. Note that this action removes power only from the radio module; power to other modules isremoved when the rear panel Supply switch is set to standby.Warning!Neither the Power button, nor the rear panel Power switch, isolates the input supply from theequipment. Lethal voltages are still present in the base station's internal power supply. Toensure safe working during maintenance, the ac and dc input supplies must bedisconnected from the base station.Note ...Always switch off the rear panel Power switch, and allow at least 10 seconds, before disconnectingthe ac and dc supply connectors. If this is not done, when next switched on the base station mayrevert to previous channel and mode settings, and not those that were active immediately beforeswitching off.T6M Base Station User GuidePage 20Base Station Front Panel Power Button Location
OPERATING THE BASE STATION IN NORMAL MODEOperating the base station in Normal mode requires the following operations. Each operation isexplained in following paragraphs.(1) Select Normal mode if not currently selected.(2) Select the required channel frequency.(3) Transmit using the fist microphone, and receive using the base station's internalloudspeaker.(4) Adjust, if necessary, the Squelch facility.Selecting Normal ModeNormal mode is active when neither Priority mode or Scan mode is selected. If Priority mode is selected,the display shows ‘P’ every few seconds. If Scan mode is selected the display shows ‘Scn’ whenscanning, or the frequency when locked onto a busy channel. To select Normal mode if currently inPriority or Scan mode:qTo select Normal mode if currently in Priority mode, press the CH▲or CH▼button.qTo select Normal mode if currently in Scan mode, press the SCN button.Selecting a Channel FrequencyTo select the required channel frequency, press the CH▲or CH▼button to scroll up or down through thechannel frequencies that are programmed into the base station. Release the button when the requiredfrequency is displayed.In conjunction with the CH▲and CH▼buttons, the SEL▲and SEL▼buttons can be used to step10 channels at a time.Transmitting and ReceivingTo key the transmitter press the fist microphone's PTT button. Check that the base station's Tx indicatorlights, and then speak clearly into the microphone.Reception is heard through the base station's internal loudspeaker. The volume is adjusted using thefront panel's rotary Volume control that must be pushed in to switch on the loudspeaker. Users shouldnote that the VOL▲and VOL▼buttons do not adjust the volume. When a signal is received, thebase station's busy indicator lights if squelch is switched on; if squelch is switched off, the busy indicatoris permanently lit.Switching and Adjusting the Squelch FacilityThe base station has an adjustable squelch facility that can also be turned on and off. The squelchfacility, when correctly set, mutes unwanted background noise when no signals are being received.During normal use of the base station the squelch facility should be switched on. After initially setting thesquelch level, there should be no reason to adjust it unless a problem is evident. The symptoms of anincorrectly adjusted squelch level are:qBackground noise is continuously, or intermittently heard when no signals are being received. Ifthis is the case, the setting is too low.qWeak signals (signals below the squelch threshold) are not being received. If this is the case, thesetting is too high.T6M Base Station User GuidePage 21These operating procedures assume the fist microphone that is normally supplied with the base stationis being used. As an alternative to the fist microphone, a microphone/headset can be used.
To Switch On the SquelchTo switch on the squelch facility:(1) Press the SQL button.(2) Check that the display shows an ‘S’ and the current level (a number between 1 and 20).(3) Check that after a few seconds the display changes to show the currently selected channelfrequency. The squelch facility is now on.To Switch Off the SquelchTo switch off the squelch facility:(1) Press the SQL button.(2) Check that the display shows an ‘S’ and the current level (a number between 1 and 20).(3) Press the SQL button while the display is showing ‘S’ and the current level.(4) Check that the display shows ‘S OFF’.(5) Check that after a few seconds the display changes to show the currently selected channelfrequency. The squelch facility is now off.To Adjust the Squelch LevelTo adjust the squelch facility:(1) Press the SQL button.(2) Check that the display shows an ‘S’ and the current level (a number between 1 and 20).(3) Press the VOL▲button to increase the squelch threshold, or the VOL▼button to decrease it.The squelch should be set to the lowest threshold setting (a number between 1 and 20) thateliminates background noise when no signal is being received.(4) After the required setting is selected, press no more buttons and check that after a fewseconds the display changes to show the currently selected channel frequency. The squelchfacility is now set.T6M Base Station User GuidePage 22
OPERATING THE BASE STATION IN PRIORITY MODEPriority mode allows faster access to frequently used channel frequencies. Up to 15 channel frequenciescan be programmed into the base station's priority list. The Priority facility must be programmed into thebase station before it can be selected, or used.Operating the base station in Priority mode requires the following operations. Each operation isexplained in following paragraphs.(1) Select Priority mode if not currently selected.(2) Select the required channel frequency.(3) Transmit using the fist microphone, and receive using the base station's internalloudspeaker.Selecting Priority ModeSelect Priority mode by pressing the PRI button. When selected, the display shows ‘P’ every fewseconds.Selecting a Priority Channel FrequencyTo select the required channel frequency, press the SEL▲or SEL▼button to scroll up or down throughthe priority channel frequencies that are programmed into the base station. Release the button when therequired frequency is displayed.Transmitting and ReceivingTo transmit, key the transmitter by pressing the fist microphone's PTT button. Check that the basestation's Tx indicator lights, and then speak clearly into the microphone.Reception is heard through the base station's internal loudspeaker. The volume is adjusted using thefront panel's rotary Volume control that must be pushed in to switch on the loudspeaker. Users shouldnote that the VOL▲and VOL▼buttons do not adjust the volume. When a signal is received, thebase station's busy indicator lights if squelch is switched on; if squelch is switched off, the busy indicatoris permanently lit. If the squelch facility requires adjusting, use the procedure ‘Switching and Adjustingthe Squelch Facility’ given on page 21.T6M Base Station User GuidePage 23
OPERATING THE BASE STATION IN SCAN MODEIn this mode the base station scans a number of pre-defined channel frequencies searching for a busyone. When a busy channel is found, the base station provides reception on that channel. The Scanfacility must be programmed into the base station before it can be selected, or used.Note …A channel is defined as busy when it is receiving a signal strong enough to override the squelchsetting.What happens after a busy channel is found depends on how the base station is programmed. There aretwo possible options: Hold and Pause.qIf Hold is programmed, the base station remains tuned to the busy channel until the CH▲buttonis pressed to resume scanning.qIf pause is programmed, the base station remains tuned to the busy channel for six seconds,then automatically resumes scanning. If during the six seconds the radio is keyed, or the CH▲button is pressed, the base station remains tuned to the busy channel; scanning does notresume until the CH▲button is pressed again.The base station can be programmed with up to 15 scan groups, each containing up to 15 channelfrequencies. Squelch is automatically switched on when scan mode is selected. Display blanking doesnot operate in scan mode.Selecting Scan ModeTo select Scan mode, press the SCN button. Check that the display shows Scn and a number between1 and 15; the number corresponds to the currently selected scan group.Selecting a Scan GroupWhen in Scan mode, the required scan group (a number between 1 and 15) is selected by pressing theSEL▲or SEL▼button.Transmitting and ReceivingTo transmit when the scan function is on hold, or pause, key the transmitter by pressing the fistmicrophone's PTT button. Check that the base station's Tx indicator lights, and then speak clearly intothe microphone.Reception is heard through the base station's internal loudspeaker. The volume is adjusted using thefront panel's rotary Volume control that must be pushed in to switch on the loudspeaker. Users shouldnote that the VOL▲and VOL▼buttons do not adjust the volume. When a signal is received, thebase station's busy indicator lights if squelch is switched on; if squelch is switched off, the busy indicatoris permanently lit. If the squelch facility requires adjusting, use the procedure ‘Switching and Adjustingthe Squelch Facility’ given on page 21.T6M Base Station User GuidePage 24
PROGRAMMABLE OPTIONSA number of options can be programmed into the radio's personality. The options are detailed in thefollowing paragraphs.Display BlankingDisplay blanking is applicable only to Normal and Priority modes; not Scan mode.When display blanking is programmed, the radio's normal frequency display is replaced by a flashing barif the radio is not keyed during the display blanking time period (between 10 and 300 seconds).Example,Display blanking is programmedDisplay blanking time is 60 secondsSelected channel frequency is 121.500 MHz.In this example, the display normally shows 121.500. If the transmitter is not keyed for60 seconds, the display changes to a flashing bar.Normal frequency display is reinstated when the radio is keyed, or when the VOL▲or VOL▼button is pressed. Note that the display can be reinstated by pressing any other button, butdoing so may also alter other settings.Warning BeepsWhen programmed, the following conditions cause a warning beep to be heard when an attempt is madeto key the transmitter:qThe radio has a fault that prevents transmissions.qTrying to key the radio on a channel frequency that has the ‘Transmit Inhibit’ option set to ‘AlwaysInhibit’.qTrying to key the radio on a busy channel that has the ‘Inhibit if Busy’ option selected.qImminent transmitter time out.The volume of warning beeps is set in the personality (a value between 1 and 7); the front panel volumecontrol does not affect the beeps.Key BeepsThis option, when programmed, produces a single beep whenever a button is pressed on the radio'sfront panel. The volume of the beep is the same as the Warning beep.T6M Base Station User GuidePage 25
Transmit InhibitAny frequency programmed into the radio can be made ‘receive only’. To achieve this, the transmitfunction on the channel is always inhibited, or the transmit facility can be inhibited only when the channelis busy. If warning sounds have been set, a warning is heard when an attempt is made to key thetransmitter.Maximum Transmit TimeA maximum continuous transmit time can be programmed into the radio's personality. The options are:qNo limit.qA limit that can be set between 30 and 300 seconds.qIf a limit has been set, and warning sounds have been set, the radio produces warning beeps10 seconds before the transmission time expires.FRONT PANEL DISPLAY FOR 25 kHz AND 8.33 kHz CHANNEL SPACINGWhen selecting an 8.33 kHz channel frequency, the displayed frequency differs from the actual channelfrequency. Table 1 on page 27 shows the pattern used for 25 kHz and 8.33 kHz spaced channelfrequencies from 118.0000 MHz to 118.1916 MHz. The pattern is the same for any frequency within theradio's frequency range. The display conforms to ICAO convention for 8.33 kHz operation.Note that operation using 8.33 kHz channel spacing within the USA is not currently allowed under FCCregulations.T6M Base Station User GuidePage 26
Table 1. Display for 25 kHz and 8.33 kHz Channel SpacingActual Frequency(to 4 decimal places)ChannelSpacingDisplayed Frequencyat Radio's Front Panel118.0000 MHz118.0000 MHz118.0083 MHz118.0166 MHz118.0250 MHz118.0250 MHz118.0333 MHz118.0416 MHz118.0500 MHz118.0500 MHz118.0583 MHz118.0666 MHz118.0750 MHz118.0750 MHz118.0833 MHz118.0916 MHz118.1000 MHz118.1000 MHz118.1083 MHz118.1166 MHz118.1250 MHz118.1250 MHz118.1333 MHz118.1416 MHz118.1500 MHz118.1500 MHz118.1583 MHz118.1666 MHz118.1750 MHz118.1750 MHz118.1833 MHz118.1916 MHz25 kHz8.33 kHz8.33 kHz8.33 kHz25 kHz8.33 kHz8.33 kHz8.33 kHz25 kHz8.33 kHz8.33 kHz8.33 kHz25 kHz8.33 kHz8.33 kHz8.33 kHz25 kHz8.33 kHz8.33 kHz8.33 kHz25 kHz8.33 kHz8.33 kHz8.33 kHz25 kHz8.33 kHz8.33 kHz8.33 kHz25 kHz8.33 kHz8.33 kHz8.33 kHz118.000 MHz118.005 MHz118.010 MHz118.015 MHz118.025 MHz118.030 MHz118.035 MHz118.040 MHz118.050 MHz118.055 MHz118.060 MHz118.065 MHz118.075 MHz118.080 MHz118.085 MHz118.090 MHz118.100 MHz118.105 MHz118.110 MHz118.115 MHz118.125 MHz118.130 MHz118.135 MHz118.140 MHz118.150 MHz118.155 MHz118.160 MHz118.165 MHz118.175 MHz118.180 MHz118.185 MHz118.190 MHzT6M Base Station User GuidePage 27
FAULT AND ERROR CODESA number of fault and error codes are shown on the radio's display if an internal fault is detected. Thecodes and their meaning are detailed in Table 2.Table 2. Fault and Error CodesDisplayedFault orError CodeTitle MeaningF1 SynthesiserfailureAn internal fault on the synthesiser has been detected. Switch off the basestation and switch on again after a few minutes. If the fault persists, refer to‘Maintenance’ in chapter 7.F2 UnstableoutputAn internal fault on the power amplifier has been detected. Switch off the basestation and switch on again after a few minutes. If the fault persists, refer to‘Maintenance’ in chapter 7.F4 OvertemperatureThis condition may occur if the transmitter's duty cycle has been exceeded, orwhen transmitting for long periods. The fault should clear if the radio is notkeyed and allowed to cool.F8 High reflectedpower Indicates a faulty antenna, antenna cable, or RF connector.F16F32Low supplyvoltageHigh supplyvoltageThese two faults indicate the internal power supply is faulty. Switch off the basestation and switch on again after a few minutes. If the fault persists, refer to‘Maintenance’ in chapter 7.Fault code F16 may be displayed when operating using the battery option andthe battery starts to run flat.cErr Critical errorThis error is displayed when the base station is initially switched on and nopersonality information, or corrupted personality information, is detected. Referto ‘Programming the Base Station’ on page 37 and load a personality into thebase station.T6M Base Station User GuidePage 28
Chapter 4 - InstallationThe instructions in this chapter should be followed, in the order given, to install the T6M base station.INTRODUCTIONWarning. Lethal Voltages!The instructions given in this chapter involve connecting lethal voltages to theequipment. The instructions, therefore, must be carried out only by suitably qualifiedpersonnel.Warning. Unauthorized Modifications!Changes, or modifications, made to this equipment that are not expressly approved byPark Air Electronics, or parties authorized by Park Air Electronics, could void the user’sauthority to operate the equipment.Warning. Antenna Radiation!The antenna used with this radio equipment must be installed such that the resultantradiated field strength is below 10 W/m²in areas normally accessible to personnel.Installing the base station involves the following operations. Each operation is detailed in this chapter ofthe user guide.qUnpacking and checking the installation kit is complete.qSetting (if necessary) internal links.qSiting the base station.qConnecting one, or more, RCUs to the base station (if required).qConnecting an antenna.qConnecting the base station chassis to earth.qConnecting the microphone (or a microphone/headset).qConnecting external facilities (if required) to the base station.qConnecting a dc input supply (if required).qConnecting a mains supply (if required).qConnecting a PC, or laptop, so that the base station's personality can be modified.T6M Base Station User GuidePage 29Before the base station is put into operational service, the required ‘personality’ information should beprogrammed in. This information, includes channel frequencies and operating modes.When a T6M base station is received from PAE, the personality is either:qA personality programmed to the user's specific requirements.or,qA default personality that covers the 760 channels (25 kHz spaced) available in the VHFaeronautical frequency band. No frequencies are allocated to the Priority list, and no scangroups are set.A programming kit is available from PAE. This allows a new personality to be programmed and downloaded.The base station does not have to be removed from its installed position to download a new personality.[Note that operation using 8.33 kHz channel spacing is not currently allowed within the USA.]
UNPACKINGWhen the base station is received from PAE, remove the packaging and check that the items listed inTable 3 are included.Table 3. Installation MaterialsItemNumberDescription Quantity PAEPart Number1 Base station complete with enclosure 1 BT6MBS2 Microphone terminated with 7-pin DIN plug 1 24-1103030132 metres of mains cable terminated with a3-pole socket (mates with AC input plug) 1 17-03000038S415-way D-type plug (mates with Facilitiessocket) comprising:Plug connectorCover1120-0115010020D09150101If ordered, a programming kit may be included. This kit, part number 70-T6MPMKIT, comprises:qCD containing the software.qBase station to PC connecting cable.SETTING INTERNAL LINKSTwo internal links must be correctly set before the base station is used. Both links are factory set, butmay require checking if a replacement Interface module is fitted during the life of the base station. Thetwo links are:qInterface module JP1. This link determines whether received audio, or transmitted and receivedaudio, is monitored through the internal loudspeaker (see ‘Local Monitoring of TransmittedAudio’ on page 11).qInterface module JP2. This link is set to correspond with the internal battery being fitted, or notfitted.When a base station is received from PAE, the links are normally set as per the user's requirements. Ifthere are any doubts, however, check the links as follows:(1) Refer to Figure 5 that shows the base station in its enclosure. Remove and retain the six M4pan head screws and associated washers that secure the equipment within the enclosure.(2) Slide the equipment forward out of the enclosure. Refer to Figure 8 and identify the InterfacePCB. Refer to Figure 11 and identify links JP1 and JP2.(3) Ensure the two links are set to the required positions.(4) Slide the equipment back into its enclosure. Refit the six M4 securing screws and washers.T6M Base Station User GuidePage 30
SITING THE BASE STATIONSite the base station away from sources of heat and in a position that allows access to the rear panelconnectors and the On/Standby switch. If your base station is a rack mounted version, refer to Figure 2and fit into an equipment rack either on telescopic slides, or fixed runners.CONNECTING A T6M CONTROLLER TO THE BASE STATIONUp to four T6M Controllers can be connected to a base station. Users should refer to the T6M ControllerUser Guide (part number 31-3600T6MC) for installation details.The controllers are terminated on any of the base station's four RCU connectors. Figure 4 shows theinterconnections. The pin-out of the RCU connector is given in Table 4.Table 4. RCU Connector Pin-OutRCU ConnectorPin Number Signal1 Ground2 Line +3 Line -4 PTT (0 V active)5 Not connected6 Not connected7 Not connected8 Not connected9 Not connectedCONNECTING AN ANTENNAWarning. Antenna Radiation!The antenna used with this radio equipment must be installed such that the resultantradiated field strength is below 10 W/m²in areas normally accessible to personnel.A suitable antenna must be connected to the base station's rear panel Antenna connector (see Figure 1).An N-type plug should be used to connect the feeder cable; the connector is designed to accept UR67 orRG213 coaxial cable that has an overall diameter of approximately 10 mm. Figure 12 shows the RFcable to N-type connector termination. A suitable connector is PAE part number 19-01030301.CONNECTING THE CHASSIS STUD TO EARTHA chassis stud, marked is fitted to the base station's rear panel. When using the rack mountedversion of the base station, and in order not to compromise the equipment’s EMC the chassis stud mustbe connected to the equipment rack or the system earth. The connection should be made using a singletri-rated, green-and-yellow cable having a cross-sectional area of 2.5 mm2. The cable should have CSAand UL1015 approval, and be connected to the chassis stud through an M6 eyelet.T6M Base Station User GuidePage 31
CONNECTING A MICROPHONEThe supplied fist microphone (Table 3, item 2) plugs directly into the base station's front panelMicrophone/Diagnostics connector.The pin-out of the Microphone/Diagnostics connector is given in Table 5. Figure 4 shows theconnections used for the fist microphone circuit.As an alternative to the fist microphone, a microphone/headset can be used. The ‘receiver audio monitor’(Table 5 pin 5) should be used as the headset connection.Table 5. Base Station Microphone/Diagnostics Socket Pin-OutPin Number Signal Input or Output Signal Level1 Microphone ground Input 0 V2 RS232 Tx Output RS2323 Microphone PTT Input 0V=PTT4 RS232 Rx Input RS2325Sidetone andreceiver audiomonitorOutput Maximum 1 V rms. Rout = 200 W6 Microphone audio Input Passive microphone7 Ground - 0 VSECURING THE MICROPHONE BRACKETA mounting bracket is supplied with each fist microphone (see illustration on the next page). The bracketshould be fitted to any convenient vertical surface, noting that the coiled microphone lead extends fromapproximately 400 mm to 1200 mm.Two screws secure the bracket to the chosen surface. The actual bracket should be used as a templatefor drilling the two screw holes.T6M Base Station User GuidePage 32
CONNECTING EXTERNAL FACILITIESFour optional external facilities can be connected to the base station. They are:qAn audio output to drive an external tape recorder.qTransmit audio, received audio, and PTT lines for use with a control desk.qA transmit inhibit signal.qAn audio operated squelch signal.The external facilities are connected to the base station's rear panel Facilities connector. This connectoris detailed in Table 6. A 15-way D-type plug (Table 3, item 4) is provided to make the facilitiesconnections. Connection to the plug should be made using screened cable; the braid should beconnected to the plug's shell as shown in the illustration on page 35.T6M Base Station User GuidePage 33Fist Microphone
Table 6. Base station Facilities Connector Pin-OutBase Station'sFacilitiesConnector PinNumberSignal Input orOutput Description1 Ground - 0 V.23Tape +Tape -OutputA balanced 600 Wtwisted pair providing audio to drivea tape recording system. The output level is 0 dBm(sine wave on 600 W) for 85% modulation depth.4Audio operatedsquelch Output0 V when received audio having a modulation depth>20% is present. Open circuit at other times. Thissignal can be used as an external ‘busy’ indication.5678910Control Desk Rx +Control Desk Rx -Control Desk Tx +Control Desk Tx -Control Desk PTT +Control Desk PTT -OutputInputInputA 6-wire system comprising two 600 Wtwisted pairbalanced lines for Rx and Tx audio, plus a line pair forPTT.The audio line levels are 0 dBm (sine wave on 600 W)for 85% modulation depth. PTT can be activated eitherby shorting together the PTT lines, or by phantomkeying on the Tx lines. Note that Control Desk PTT - isinternally connected to 0 V.111213Not connectedNot connectedNot connected--14 External Tx inhibit Input When this line is connected to 0 V, the base stationcannot be keyed.15 Ground - 0 V.T6M Base Station User GuidePage 34
CONNECTING A DC INPUT SUPPLYThe base station can operate using a 12 to 15.5 V dc input supply, or it can be used as a backup to themains ac input. The DC Input connector fitted to the rear panel (see following illustration) is used for thissupply. Connection should be made using a free XLR socket; for example, PAE part number20-01030106.T6M Base Station User GuidePage 35DC Input ConnectorCable Braid Connection to D-Type's Shell
CONNECTING AN AC INPUT SUPPLYAn ac input supply must be connected to the base station using the supply connector provided (Table 3,item 3). The free end of the cable should be terminated with a connector suitable for the local mainssupply.The T6M base station is a class 1 equipment. The ac supply cable must have a green-and-yellowprotective earthing conductor electrically connected to the protective earthing terminal of the equipmentconnector, and the supply output connector.The ac supply cable should be colour coded in accordance with the electrical appliance (colour code)regulations for the UK. That is:Line: BrownNeutral: BlueEarth: Green-and-yellowConnections are shown below.CONNECTING A PC TO THE BASE STATIONTo modify the base station's personality, the microphone is disconnected from theMicrophone/Diagnostics connector and is replaced by an RS232 cable connected to a laptop, or PC. Thecable is part of the T6M programming kit, part number 70-T6MPMKIT. Figure 4 shows the connectionsused for the RS232 cable.T6M Base Station User GuidePage 36Base Station's Chassis AC Connector
Chapter 5 - Programming the Base StationThis chapter describes how a personality is compiled and then downloaded into the base station'sinternal memory.INTRODUCTIONDuring manufacture, the base station is programmed with a default personality, or with a personality asper the user's requirements.Note …A personality is the programme that defines the radio's channel frequencies, operating modes,and other options.A new personality can be compiled and loaded into the radio at any time using the programming kit(70-T6MPMKIT) available from PAE. The kit contains CD-ROM based software and a programminglead. A laptop computer, or PC, must be available to compile the personality.The following topics and procedures are detailed in this chapter:qProgrammable options (see page 39).qInstalling the programming software onto a laptop computer, or PC (see page 40).qCreating a new personality (see page 40).qSaving a personality (see page 44).qOpening a saved personality (see page 45).qLoading a personality into the radio (see page 45).qReading a personality from the radio (see page 45).qPrinting a personality report (see page 46).T6M Base Station User GuidePage 37
Table 7. Programming OptionsOption Range Default NotesDisplay blanking On or off Off See ‘Display Blanking’ on page 39.Display blankingtime10 to 300seconds 60 seconds See ‘Display Blanking’ on page 39.Maximumtransmit time30 to 300seconds, or0 (unlimited)180 seconds Limits the maximum continuous transmit time.Hold on scanmode On or off On See ‘Hold on Scan Mode’ on page 40.Key beeps On or off On See ‘Key Beeps’ on page 39.Warning beeps On or off On See ‘Warning Beeps’ on page 39.Warning beepvolume 1 to 7 3 See ‘Warning Beeps’ on page 39.Personalitydescription46 characteralphanumericstringEmpty string A free format text string that defines the radiospersonality.Use channelstrings Yes or no NoDefines whether channel frequencies are to includedescriptive strings. Selecting Yes for this optionreduces the maximum number of channels that canbe stored from 760 to 400.Busy on time 0.1 to 5 seconds 0.5 seconds Squelch must be open for this time before a channelis considered to be busy.Offset channels On or off On When set to on, the radio scans for the strongestfrequency within a 25 kHz channel. Always set to On.Frequency 118.000 to136.9916 MHz760 (25 kHzspaced)channels from118.000 to136.975 MHzEnter this in ICAO format (see Table 1 on page 27);this format automatically defines the frequency andthe bandwidth.Priority channel Yes or no No Up to 15 channels can be defined as prioritychannels.Scan group 1to15ornotassignedNo scangroupsassignedUp to 15 channels can be assigned to each of 15scan groups. A channel frequency can be included inmore than one group.TransmitinhibitedNever inhibitAlways inhibitInhibit if busyNever inhibit This option can be used to prevent the radiotransmitting on any particular channel frequency.Identificationstring16 characteralphanumericstringEmpty string A free format text string that describes the channelfrequency.Base Enabled ordisabled Disabled Must be enabled for correct operation of the basestation.T6M Base Station User GuidePage 38
PROGRAMMABLE OPTIONSA number of programmable options can be set in the base station's personality. These are listed in Table7. The following paragraphs provide further explanation regarding display blanking, warning beeps, keybeeps, and hold on scan.Display BlankingDisplay blanking is applicable only to Normal and Priority modes; not Scan mode.When display blanking is enabled, the radio's normal frequency display is replaced by a flashing bar ifthe radio is not keyed during the display blanking time period.Example,Display blanking is enabledDisplay blanking time is 60 secondsSelected channel frequency is 121.500 MHz.In this example, the display normally shows 121.500. If the transmitter is not keyed for60 seconds, the display changes to a flashing bar.Normal frequency display is reinstated when the radio is keyed, or when the VOL▲or VOL▼button is pressed. Note that the display can be reinstated by pressing any other button, butdoing so may also alter radio settings.Warning BeepsWhen enabled, the following conditions cause a warning beep to be heard when an attempt is made tokey the transmitter:qThe radio has a fault that prevents transmissions.qTrying to key the radio on a channel frequency that has the ‘Transmit Inhibit’ option set to ‘AlwaysInhibit’.qTrying to key the radio on a busy channel that has the ‘Inhibit if Busy’ option selected.qImminent transmitter time out.The volume of warning beeps is set in the personality (a value between 1 and 7); the front panel volumecontrol does not affect the beeps.Key BeepsThis option, when enabled, produces a single beep whenever a button is pressed on the radio's frontpanel. The volume of the beep is the same as the Warning beep.T6M Base Station User GuidePage 39
Hold on Scan ModeWhen in scan mode, what happens after a busy channel is found depends on how the radio isprogrammed. There are two possible options: Hold and Pause.qIf Hold is programmed, the radio remains tuned to the busy channel until the CH▲button ispressed to resume scanning.qIf pause is programmed, the radio remains tuned to the busy channel for six seconds, thenautomatically resumes scanning. If during the six seconds the radio is keyed, or the CH▲buttonis pressed, the radio remains tuned to the busy channel; scanning does not resume until theCH▲button is pressed again.INSTALLING THE PROGRAMMING SOFTWARE ONTO A LAPTOP, OR PCThe programming software is supplied on a CD-ROM. The software should be installed onto a laptopcomputer, or PC, running Windows™ 95 or 98. To install the software:(1) Insert the CD-ROM into the computer's CD drive.(2) From Windows Explorer, select the CD-ROM drive, and run the programme calledSetup.exe.(3) Follow the on-screen instructions. The programming files are stored in the directoryC:\Program Files\PAE unless a different directory is specified during installation. Icons, andan uninstall programme are automatically created during installation.CREATING A NEW PERSONALITYThis procedure creates a new personality for use by the radio. The personality includes all channelfrequencies, operating modes and programmable options that are required when the radio is inoperational use. When the personality has been compiled, it can be loaded into the radio's memory byconnecting the laptop (or PC) to the radio using the programming lead.To create a new personality:(1) At the laptop (or PC) run the PAE programmer software. Check that the General page (seepage 41) is displayed. If the Frequencies page is displayed, select the General tab.(2) From the menu-bar select File then New. This action resets all options to the default valueand clears all entries, except one, in the frequency table.T6M Base Station User GuidePage 40
(3) Use Channel Strings.Decide if you wish to store descriptive text for any of the channelfrequencies that will be programmed. If you do, use the mouse to ensure the box is checked.If you do not wish to use this facility, use the mouse to ensure the box is empty.Notes …If the Use Channel Strings facility is selected, the maximum number of channelfrequencies that can be stored is reduced from 760 to 400.Descriptive text is shown on the frequency list within this programme; it is not displayedat the radio.T6M Base Station User GuidePage 41General Page[Note that the status line at the bottom of the page displays help messages when the mouse pointer is placedover a programmable option.]
(4) Maximum Transmit Time. This setting alters the maximum time the transmitter can be keyed.Key in a value between 30 and 300 (seconds), or if no limit is required, enter 0. If a limit hasbeen set, and warning beeps are set, a warning is heard 10 seconds before the radio stopstransmitting.(5) Display Blanking. Display blanking is described on page 39. If you require this facility use themouse to ensure the box is checked. If you do not wish to use this facility, use the mouse toensure the box is empty.(6) Display Blanking Time. Enter a number between 10 and 300 (seconds). This is the time usedwhen the display blanking facility is selected to be active. Display blanking is described onpage 39.(7) Warning Beeps. Warning beeps, as described on page 39, can be set to on or off. To setthem to on use the mouse to ensure the box is checked. To switch them off, ensure the box isempty.(8) Warning Beep Volume. The volume of warning beeps (if used) is represented by a figurebetween 1 and 7. Enter the required value in the box.(9) Hold in Scan Mode. This facility, which is only applicable to scan mode, is explained on page40. When this box is checked, hold in scan mode is selected; if not checked, pause in scanmode is selected.(10) Busy On Time. This is the time a radio must be busy, when scan mode is selected, before theradio holds, or is paused. Enter a value between 0.1 and 5 seconds.(11) Key Beeps. When key beeps are enabled, a single beep is heard whenever a button ispressed on the radio's front panel. The volume of the beep is the same as the Warning beep.To enable this facility, check the box; to disable it, ensure the box is empty.(12) Base. This check box must always display a tick. If it does not have a tick (unchecked), thebase station will not operate correctly.(13) COM1 or COM2 Selection. Either Com port 1, or Com port 2, can be selected from thedrop-down menu. This selection determines which Com port on the laptop, or PC, the radiomust be connected to when transferring the personality to the radio.(14) Offset Channels. The offset channels box should always be checked. This is one of theradio's internal characteristics. It does not refer to offset frequency channels as defined byICAO.(15) Personality Description. A unique name for the personality can be entered here (maximumof 46 characters).(16) When all fields on the General page are correctly configured, use the mouse and click on theFrequencies tab. Check that the Frequencies page is shown (see next page).T6M Base Station User GuidePage 42
(17) When the Frequencies page is first selected there will be one default frequency shown. If thisfrequency is required leave it as it is; if not, click in the frequency box and change thefrequency to that required.Note …Enter frequencies in ICAO format. The software recognizes the frequency andappropriate channel spacing (Width). There is no need to manually enter the channelspacing. The ICAO format is illustrated on page 27.(18) If the frequency is required to be included in the Priority list, key in Y in the priority column. Ifnot required, ensure the column reads No.(19) If the frequency is required to be included in a Scan group, enter the scan group number(between 1 and 15) in the scan group column. If the frequency is to be included in more thanone scan group, enter the group numbers, separating each with a comma. Note that up to 15frequencies can be included in each scan group.(20) The Tx inhibit facility must now be set for the frequency. This facility determines when theradio can transmit. Three options are allowed:qNever. Key in N. This means the inhibit function is never enabled. The transmitter can bekeyed at any time, including at times when the channel is busy.qBusy. Key in B. This means the inhibit function is enabled when the channel is busy. Thetransmitter can however be keyed at all other times.qAlways. Key in A. This means the inhibit function is always enabled. The channel istherefore ‘receive only’ and the transmitter can never be keyed.(21) If the Channel String option was selected from the General page, descriptive text (maximumof 16 characters) can be keyed into the Identity column.(22) One frequency channel entry is now complete. Further channels can be entered in the sameway by clicking on the Add channel box. To delete any entered channel, highlight thefrequency and click on the Delete channel box. When all the required frequency channelshave been entered, click on the ‘Verify and sort the table’ box. Any errors made whencompiling the frequencies page are automatically identified to the user.T6M Base Station User GuidePage 43Frequencies Page
(23) As an alternative to manually entering frequency channels, and when many channels mustbe entered, a range of frequencies can be entered. To do this, click on the Fill table box andcheck that the Add channels sub-page is displayed.(24) From the Add channels sub-page, enter the first and last frequencies in the required range.From the drop-down menu, select the channel spacing (bandwidth); this can be 25 kHz,8.33 kHz, or both. From the drop-down menu select the Transmit inhibit condition (Always,Never, or Busy). When complete, click on the Add channels box. After the list of frequenciesis displayed on the Frequencies page, any individual frequency can be amended, forexample adding it to the priority list, as required. When all the required frequency channelshave been entered, click on the ‘Verify and sort the table’ box. Any errors made whencompiling the frequencies page are automatically identified to the user.(25) When a lot of frequencies are entered and it is required to amend the entry, for exampleadding it to the priority list, a quick method of displaying the frequency is by clicking on theFind channel box. This displays the Find frequency sub-page. Enter the frequency on thesub-page and click on Find it. The frequency is then displayed on the Frequencies page.After amending the entry, click on the ‘Verify and sort the table’ box. Any errors made areautomatically identified to the user.SAVING A PERSONALITYWhen a personality has been compiled, it should be saved. To do this:(1) From the programming menu, select File, then Save As.(2) When the Save As window is displayed enter a file name for the personality. The file namemust have the extension .PER.(3) Click on Save to store the personality. Before the save process, the personality isautomatically checked for any errors. If errors do exist they are highlighted to the user.(4) If the save is successful, the file name appears at the top of the programming window. At anytime, the personality can be edited and saved using the same filename.T6M Base Station User GuidePage 44Add Channels Sub-PageFind Frequency Sub-Page
OPENING A SAVED PERSONALITYTo open a previously saved personality:(1) From the programming menu, select File, then Open.(2) Select one of the personality files and click on Open.LOADING A PERSONALITY INTO THE RADIOUse the following procedure to load a personality into the radio:(1) Switch off the laptop (or PC) and the radio.(2) At the radio, disconnect the microphone from the front panel. Replace it with theprogramming lead.(3) Connect the other end of the programming lead to the laptop's (or PC's) Com port 1 or Comport 2. Note that the appropriate port is set in the personality. The connected port must matchthat stated in the personality. Check, and amend if necessary.(4) Switch on the laptop and then the base station (laptop must be switched on before the basestation). At the base station check that Pr is shown on the front panel display.(5) Ensure the programming software is running and display the required personality on screen.(6) From the programming menu-bar select ‘Program radio’ and then ‘Personality’.The programmer automatically verifies the personality is valid and downloads it to the radio. If it is notvalid the nature of the error will be displayed. The progress of the programming operation is displayed onthe status line at the bottom of the programming screen.When programming is complete, switch off the radio and laptop, remove the programming lead,reconnect the radio's microphone and restore the equipment ready for operational use.READING A PERSONALITY FROM THE RADIOTo read a personality from the radio:(1) Switch off the laptop (or PC) and the radio.(2) At the radio, disconnect the microphone from the front panel. Replace it with theprogramming lead.(3) Connect the other end of the programming lead to the laptop's (or PC's) Com port 1 or Comport 2. Note that the appropriate port is set in the personality. The connected port must matchthat stated in the personality. Check, and amend if necessary.(4) Switch on the laptop and then the base station (laptop must be switched on before the basestation). At the base station check that Pr is shown on the front panel display.(5) Ensure the programming software is running.(6) From the programming menu-bar select ‘Read radio’ and then ‘Personality’.The progress of the read operation is displayed on the status line at the bottom of the programmingscreen.When complete, switch off the radio and laptop, remove the programming lead, reconnect the radio'smicrophone and restore the equipment ready for operational use.T6M Base Station User GuidePage 45
PRINTING A PERSONALITY REPORTA personality can be printed as follows:(1) From the programming menu, select Report, then Generate.(2) The programmer automatically verifies the personality is valid. If it is not valid the nature ofthe error will be displayed.(3) A textual representation of the personality is displayed using the Windows Notepadprogramme. When Notepad displays the personality it can be saved as a text file, or printed.Previously saved Notepad files containing personalities can be retrieved by selecting Report, then Openfrom the menu-bar.T6M Base Station User GuidePage 46
Chapter 6 - SparesINTRODUCTIONThe base station is manufactured using surface mount technology. Because of this, and the specialisttest equipment required to set up the circuits, spares are limited to modules and components as listedbelow.LIST OF SPARESThe following spares are available from PAE. When ordering, the part number should always bequoted.T6M base station (complete) BT6MBSRadio module 25F00000T6MInterface module 68-T6MBS635Switched mode power supply unit 69F07150135SReservoir capacitor 33000 mF 63 V 14-06339200Fan, dc, 12 V operation 69F12120612Loudspeaker, 4 W, 4 ohm 04F05509034Fuse 5 A anti-surge, 20 mm(located in ac connector) 29F01140102SFuse 15 A, size 0 (dc input) 29-01350201Microphone 24-11030301Optional battery 06F30012300Programming kit (includesCD-ROM and programming lead) 70-T6MPMKITT6M Base Station User GuidePage 47
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Chapter 7 - MaintenanceThis chapter details the scheduled maintenance required by the T6M base station.It also provides fault finding guidance.SCHEDULED MAINTENANCEScheduled maintenance to the T6M base station involves the following checks:(1) Transmit power and frequency accuracy test. This check should be carried out annually.(2) Receiver sensitivity check. This check should be carried out annually.(3) Battery replacement (applicable only to base stations fitted with the internal battery option).The life of the battery depends upon its usage; refer to ‘Battery Replacement’ on page 52.Test Equipment RequiredThe test equipment necessary to complete the scheduled maintenance is listed in Table 8.Table 8. List of test equipmentItem Description1 Through-line wattmeter.2 20 dB attenuator (>15 W continuous power rating).3 VHF Frequency counter.4 RF signal generator.5 AF wattmeter.6 Test lead for connecting the base station to the AF wattmeter. [See next heading.]Test LeadThe test lead (Table 8, item 6) connects the base station to the AF wattmeter during receiver sensitivitytests. The lead connections are detailed in Table 9.Table 9. Test Lead Connections7-Pin DIN Plug(connects to base station'sMicrophone connector)AF Wattmeter ConnectorPin 5, receiver audio monitor InputPin 7, earth 0 VT6M Base Station User GuidePage 49
Transmit Power and Frequency Accuracy TestTo check the base station's transmit power, and the accuracy of the carrier frequency, carry out thefollowing procedure:(1) Isolate power from the base station and connect the test equipment as shown below. Ensurethe wattmeter is switched to forward power.(2) Reconnect the power and ensure the base station's rear panel Power switch is set to on.(3) To enter Test mode switch on the base station by pressing, and keeping pressed, the frontpanel Power button. Without releasing the Power button, press and release the SQL button,then the SCN button, and finally the PRI button. Release the Power button.T6M Base Station User GuidePage 50Transmit Power and Frequency Accuracy Test - Test Equipment ConnectionBase Station Front Panel Power Button Location
(4) Check that the display shows tESt and after a few seconds it changes to show the currentpower level setting (a number between 1 and 240 representing approximately 6 to 12 watts).(5) Press the SQL button to select the test frequency 127.500 MHz. The test frequency isdisplayed for a couple of seconds and the display then reverts to the power setting.Note …Using the SQL key to select a test frequency always selects a 25 kHz spaced channel.Squelch is automatically switched off in Test mode.(6) Key the transmitter and note the wattmeter's reading.(7) With the transmitter de-keyed, use the CHsand CHtbuttons to increment or decrementthe power setting in steps of 1. Alternatively, use the SELsand SELtbuttons to incrementor decrement the power setting in steps of 10. Then key the transmitter and note thewattmeter's reading. The power setting cannot be adjusted when the transmitter iskeyed. Adjust the power output until the required power is set (nominally 8 watts).Note …The transmit indicator lights when the transmitter is keyed. If a fault is detected, theindicator does not light. No fault codes, however, are displayed in Test mode.(8) Key the transmitter and check that the frequency counter reads between 127.499808 and127.500192 MHz.(9) To save the new power setting in the base station's memory, press and keep pressed thefront panel Power button. Without releasing the Power button, press and release the PRIbutton, then the SCN button, and finally the SQL button.(10) When the new setting is saved, the display shows ‘S’ and two short beeps are heard.Release the Power button.(11) To switch off without saving the new power setting, press and release the Power button. Thedisplay shows nS and a single long tone is heard.(12) Enter test mode again by pressing, and keeping pressed, the front panel Power button.Without releasing the Power button, press and release the SQL button, then the SCN button,and finally the PRI button. Release the Power button.(13) Check that the display shows tESt and after a few seconds it changes to show the currentpower level setting.(14) Press the SQL button to select the test frequency 118.000 MHz.(15) Key the transmitter and check that the wattmeter reads between 6 and 12 watts. Check thatthe frequency counter reads between 117.999823 and 118.000177 MHz.(16) Press the SQL button to select the test frequency 136.975 MHz.(17) Key the transmitter and check that the wattmeter reads between 6 and 12 watts. Check thatthe frequency counter reads between 136.974745 and 136.975205 MHz.(18) On completion, switch off the base station and disconnect the test equipment. Restore thebase station ready for operational use.T6M Base Station User GuidePage 51
Receiver Sensitivity CheckTo check the base station's receiver sensitivity carry out the following procedure:(1) Isolate power from the base station and connect the test equipment as shown below.(2) Reconnect the power and ensure the base station's rear panel Power switch is set to on.(3) Adjust the signal generator to operate at 118.000 MHz with an RF level of -100 dBm and a1 kHz tone modulated at 30%.(4) At the base station's front panel press the squelch (SQL) button. Check that the displayshows an ‘S’ and a number between 1 and 20. This number is the squelch level setting.(5) Adjust the squelch level, by pressing the VOLsand VOLtbuttons, until the display shows alevel of 2.(6) Adjust the volume control until a reference reading (approximately mid-scale) is shown in theAF wattmeter. Note the reading in dB.(7) Set the signal generator's modulation to off.(8) Increase the sensitivity of the AF wattmeter until a reading is obtained. Note the reading indB.(9) Check that the difference in readings noted in steps (6) and (8) are not less than 10 dB.(10) Repeat steps (3) to (9) for test frequencies of 127.500 MHz and 136.975 MHz.(11) On completion, switch off the base station and disconnect the test equipment. Restore thebase station ready for operational use.Battery ReplacementAn optional battery can be fitted to act as a backup supply if the mains supply fails. The lead acid batteryis fitted in the position shown in Figure 8.The battery should be replaced after a period of time that depends on usage. Table 10 details thereplacement period according to usage.T6M Base Station User GuidePage 52Receiver Sensitivity Test - Test Equipment Connection
Table 10. Battery ReplacementBattery Usage Replacement AfterNot used. Battery kept fully charged. 8 years.Battery used until fully discharged (that is, 2 hours useat 10% duty cycle). 60 discharges.Battery used for approximately 1 hour at 10% dutycycle (50% discharge). 120 partial discharges.Battery used for approximately 30 minutes at 10% dutycycle (25% discharge). 240 partial discharges.Battery used for approximately 10 minutes at 10% dutycycle (10% discharge). 600 partial discharges.FAULT FINDINGWarning!Neither the Power button, nor the rear panel Power switch, isolates the input supply from theequipment. Lethal voltages are still present in the base station's internal power supply. Toensure safe working during maintenance, the ac and dc input supplies must bedisconnected from the base station.The T6M base station contains the following replaceable modules (see Figures 6, 7, and 8):qA T6M radio module (a self-contained transceiver).qAn interface module that interconnects the various external signals, and the power supplies, tothe radio module.qA switched mode power supply (SMPS).The base station's modules are manufactured using surface mount technology. Because of this, and thespecialist test equipment required to set up the circuits, spares are limited to modules and componentsas listed on page 47.The following table gives help in fault diagnosis.T6M Base Station User GuidePage 53
Table 11. Fault DiagnosisSymptom CheckNo front panel indicators lit. Check input supplies.Check ac supply input fuse (located in rear panel acconnector) and dc supply fuse.Check output of switched mode power supply (SMPS). Thisshould be +15.6 V dc (wrt 0 V) at TP21 (located next to CN10)of the Interface PCB (see Figures 7 and 11). If the SMPS issuspect, remove it from the base station and test it on theworkbench ensuring a load is connected across its output.Fault, or error code displayed at front panel. Fault and error codes are displayed on the front panel toindicate faults detected by the radio module. These codes aredetailed in Table 12.Transmit function not operating correctly.Transmit inhibit indicator flashing.External transmit inhibit facility is deliberately or inadvertentlyenabled. This facility is enabled when pin 14 on the basestation's Facilities connector is grounded (see Table 6 onpage 34.Transmit function not operating correctly. Nofault code displayed.Complete the ‘Transmit Power and Frequency Accuracy Test’detailed on page 50. If the test fails, check for any obviousproblems such as a faulty PTT switch. Note also that thesignal from the microphone connector passes through theInterface module before being connected to the radio module(see Figures 6 and 7). If the signals are correct at the radioinput, then change the radio module.Receive function not operating correctly. Nofault code displayed.If some signals are not being received, refer to the operatinginstructions and check the squelch level is correctly set.Complete the ‘Receiver Sensitivity Check’ on page 52. If thetest fails, use Figures 6 and 7 to determine where the fault lies.For example, audio out of the radio module can be monitoredat the Interface module connector CN8 pins 3 and 7. TheInterface module's audio output to the loudspeaker can thenbe monitored on CN7 pins 13 and 14. Using Figures 6 and 7should enable the fault to be diagnosed to either the radiomodule, or the Interface PCB.If the ‘Receiver Sensitivity Check’ is OK, the fault is probablyin the antenna system.T6M Base Station User GuidePage 54
Table 12. Fault and Error CodesDisplayedFault orError CodeTitle MeaningF1 SynthesiserfailureAn internal fault on the synthesiser has been detected. Switch off the basestation and switch on again after a few minutes. If the fault persists, replace theradio module with a serviceable spare.F2 UnstableoutputAn internal fault on the power amplifier has been detected. Switch off the basestation and switch on again after a few minutes. If the fault persists, replace theradio module with a serviceable spare.F4 OvertemperatureThis condition may occur if the transmitter's duty cycle has been exceeded, orwhen transmitting for long periods. The fault should clear if the radio is notkeyed and allowed to cool.F8 High reflectedpowerIndicates a faulty antenna, antenna cable, or RF connector. Check the antennacircuit and replace any unserviceable component.F16F32Low supplyvoltageHigh supplyvoltageThese two faults indicate the internal power supply is faulty. Switch off the basestation and switch on again after a few minutes. If the fault persists, replace thepower supply module with a serviceable spare.Fault code F16 may be displayed when operating using the battery option andthe battery starts to run flat.cErr Critical errorThis error is displayed when the base station is initially switched on and nopersonality information, or corrupted personality information, is detected. Referto ‘Programming the Base Station’ on page 37 and load a personality into thebase station.REPLACING MODULESIf it is necessary to remove a module, refer to the following figures for guidance:qFigure 8 Base station layout diagramqFigure 9 Radio module and PSU removalqFigure 10 Interface PCB and reservoir capacitor removal.Modules are accessed as follows:(1) Refer to Figure 5 that shows the base station in its enclosure. Remove and retain the six M4pan head screws and associated washers that secure the equipment within the enclosure.(2) Slide the equipment out of the enclosure.Note that when fitting a new Interface module, two links must be correctly set. Refer to ‘Setting InternalLinks’ on page 30.T6M Base Station User GuidePage 55
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Chapter 8 - FiguresThis chapter contains the A3 size figures referred to throughout this user guide.1 Front and rear layout2 Rack mounted version3 Key to front panel controls4 External connection diagram5 Enclosure securing detail6 Base station block diagram7 Base station interconnection diagram8 Base station layout diagram9 Radio module and PSU removal10 Interface PCB and reservoir capacitor removal11 Interface PCB layout diagram12 Cable termination at the N-type connectorT6M Base Station User GuidePage 57
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BT6MBS-01Front and Rear LayoutFigure 1
BT6MBS-13Rack Mounted VersionFigure 2
GA10642 Iss. 1Key to Front Panel ControlsFigure 3For description of controls, see text in chapter 3.
BT6MBS-11External Connection DiagramFigure 4
BT6MBS-10Enclosure Securing DetailFigure 5
Base Station Block DiagramFigure 6GA10547 Iss. 3
Base Station Interconnection DiagramFigure 7GA10548 Iss. 3
Base Station Layout DiagramFigure 8GA10719 Iss. 1
Radio Module and PSU RemovalFigure 9GA10721 Iss. 1 (radio) and GA10731 Iss. 1 (PSU)Radio ModulePower Supply Unit (PSU)
Interface PCB and Reservoir CapacitorRemovalFigure 10GA10732 Iss. 1 and GA10720 Iss. 1Interface PCBReservoir Capacitor
Interface PCB Layout DiagramFigure 11GA10751 Iss 1
BT6MBS-12-1Cable Termination at the N-Type ConnectorFigure 12

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