Thrane and Thrane A S TU5160 Sailor System 5000 150W GMDSS MF/HF SSB DSC NBDP User Manual TT98 125586 0 PMD

Thrane & Thrane A/S Sailor System 5000 150W GMDSS MF/HF SSB DSC NBDP TT98 125586 0 PMD

UserManual.wiki >

Thrane and Thrane A S >

TU5160 User Manual >

user manual 2

IIRADIOTELEXDisclaimerAny responsibility or liability for loss or damage in connection with the use ofthis product and the accompanying documentation is disclaimed by Thrane& Thrane. The information in this manual is provided for information purposesonly, is subject to change without notice, may contain errors or inaccuracies,and represents no commitment whatsoever by Thrane & Thrane. Thisagreement is governed by the laws of Denmark.Manuals issued by Thrane & Thrane are periodically revised and updated.Anyone relying on this information should satisfy himself/herself as to themost current version. Providers with access to Thrane & Thrane’s Extranetmay obtain current copies of manuals at: http://extranet.thrane.com.Thrane & Thrane is not responsible for the content or accuracy of anytranslations or reproductions, in whole or in part, of this manual from any othersource.0725

IIIRADIOTELEXContents1 Introduction........................................................................................... 1-11.1 General information ................................................................................ 1-1Radiotelex system .................................................................................. 1-1GMDSS .................................................................................................. 1-1Communication concept......................................................................... 1-11.2 Terminology ............................................................................................ 1-2General telex terms ................................................................................ 1-2Radiotelex terms .................................................................................... 1-32 Operation .............................................................................................. 2-12.1 Introduction............................................................................................. 2-1Forms and fields ..................................................................................... 2-1Function keys ......................................................................................... 2-2General functions ................................................................................... 2-3Fast keys ................................................................................................ 2-3Password ................................................................................................ 2-42.2 Terminals ................................................................................................ 2-42.3 Terminal function keys............................................................................ 2-5Function keys when ‘standby’................................................................. 2-5Function keys when not ‘standby’ .......................................................... 2-72.4 Backups .................................................................................................. 2-8To make a backup .................................................................................. 2-8Background information on backups...................................................... 2-8Backup policy ......................................................................................... 2-8Radiotelex on hard disk.......................................................................... 2-92.5 Transmission .......................................................................................... 2-92.6 Scanning................................................................................................. 2-102.7 Message handling .................................................................................. 2-11Import of message ................................................................................. 2-12Export of message ................................................................................. 2-122.8 Subscriber handling ............................................................................... 2-12Subscriber edition in general ................................................................. 2-13Subscriber parts ..................................................................................... 2-13Hiding and recovering subscribers ........................................................ 2-142.9 VIEW function......................................................................................... 2-142.10 Distress .................................................................................................. 2-15Distress mode ........................................................................................ 2-16Distress Transmission ............................................................................ 2-17Distress SCAN function ......................................................................... 2-17Distress VIEW function .......................................................................... 2-172.11 Status messages .................................................................................... 2-180725

IVRADIOTELEX07253 Installation and configuration............................................................. 3-13.1 Installation .............................................................................................. 3-1System wirings ....................................................................................... 3-1Modem setup.......................................................................................... 3-3Factory reset .......................................................................................... 3-6Printer setup ........................................................................................... 3-6Ship name .............................................................................................. 3-6Setting up subscribers ........................................................................... 3-6Hiding subscribers and coast stations ................................................... 3-6Backup installation ................................................................................. 3-73.2 Configuration .......................................................................................... 3-7Coast station setup ................................................................................ 3-7Coast station edition............................................................................... 3-8TELEX print setup .................................................................................. 3-10TELEX tape puncher setup .................................................................... 3-10TELEX log setup .................................................................................... 3-10TELEX TTY setup................................................................................... 3-11TELEX retry setup .................................................................................. 3-11TELEX secret reception setup ............................................................... 3-11FEC TTY setup ....................................................................................... 3-12Printer setup ........................................................................................... 3-12Fast key setup ........................................................................................ 3-12

1-1RADIOTELEX 1 Introduction1 Introduction1.1 General informationRadiotelex systemRadiotelex is a communication system that handles the transmission andreception of telex messages over radio. Basically the system consists of theRadiotelex software and a Radiotelex module (modem). The Radiotelexsoftware runs on a computer of one of the following types:• a marine PC,• a communication computer, or• an ordinary PC not using Windows.GMDSSRadiotelex has been designed in accordance with relevant IMO, CCIR, andETSI recommendations/specifications. It has been approved for shipboardinstallations to operate within the Global Maritime Distress and Safety System(GMDSS). The solid state disk of the computer is used for storing the systemsoftware as required by the GMDSS.Communication conceptRadiotelex supports worldwide ship-to-ship, ship-to-shore, and shore-to-shipcommunication. Often a coast station acts as the relay between Radiotelexand an end receiver without any Radiotelex capabilities. Ship and coaststations have unique call codes; Radiotelex supports both 4- and 5-digitselcalls and 9-digit MMSI numbers.0725

1-2RADIOTELEX1 Introduction1.2 TerminologyGeneral telex termsMaster The master is the calling station (not necessarily thetransmitting station but the one that actually initiated thecommunication).Slave The slave is the called station (not necessarily the receiv-ing station).ISS Information Sending Station: The station transmittingcharacters.IRS Information Receiving Station: The station receiving char-acters.ARQ Automatic Repetition reQuest.A telex mode where the ISS transmits three characters ata time. Between each three characters the IRS transmitsone character telling the ISS to send three new charactersor to repeat the last three. Only two stations can com-municate when using ARQ. Other stations cannot readthe communication.FEC Forward Error Correction.A telex mode where the ISS transmits three characters ata time and repeats them immediately. FEC telex is one-way communication; the transmitter of the receiver is notused at all.FECbroadcast A broadcast FEC transmission can be received by allstations. FEC broadcast is primarily used for coast stationtraffic lists and news and in distress situations.0725

1-3RADIOTELEX 1 IntroductionFECselective A selective FEC transmission can only be received by oneparticular station, just like ARQ traffic. Not used veryoften, FEC selective may be useful if the ship is in portwhere it is not allowed to transmit. On its way into the port,the ship can call the coast station to inform them that allmessages for the ship must now be sent in selective FEC.Thus reception is possible without using the transmitter.Free signal Coast stations often transmit a so-called free signal whena frequency is vacant. This enables Radiotelex to detectwhen a transmission can begin without interrupting on-going traffic between the coast station and another ship.Radiotelex termsSubscriber A ship or an office that is not a coast station.Coast station A radio station that sends out free signals or has thecapability of being used as a link between a ship and asubscriber.Procedure A procedure specifies how Radiotelex has to communi-cate with a specific coast station in order to carry out atransmission, e.g. an unattended store-and-forward telextransmission of a message.Station A station is either a subscriber or a coast station.Radio station A coast station or a subscriber with a radio.Ship A subscriber with a radio.Operation Methods that can be used to get a message to thedestination. Examples are store-forward telefax or directtelex.Telex In Radiotelex, TELEX means ARQ telex.0725

2-1RADIOTELEX 2 Operation2 Operation2.1 IntroductionForms and fieldsRadiotelex operates with two basic data entry concepts called forms andfields. As an example of a form, we shall look at the EDIT SHIP TELEXSUBSCRIBER form. To find this:1. Switch on, and Radiotelex starts up automatically.2. Press F6 Subscriber.3. Select New subscriber.4. Type in the subscriber name, e.g. ‘M/S MARY’.5. Select F2 Ship telex.The EDIT SHIP TELEX SUBSCRIBER form appears:A form consists of one of more fields. In the EDIT SHIP TELEX SUBSCRIBERform, there are three, each line being one field:0725

2-2RADIOTELEX2 OperationFunction keysRadiotelex uses function keys as a means of selection. Each form containsa number of function keys which may or may not be present in other forms.Below we shall have a look at the function keys in the EDIT SHIP TELEXSUBSCRIBER form shown above. Also, we shall see how some function keysalways have the same function. Finally, a later chapter will show that theTELEX and FEC terminals have two sets of function keys – ‘standby’/not‘standby’.For now, let us once again turn to the EDIT SHIP TELEX SUBSCRIBER form,which contains the following function keys:Below the function of each key is described:F10Returns to the previous screen.F1 Modify field By pressing F1, a list of possible values for the current fieldwill pop up. An appropriate value can then be selectedfrom the list.F2 Save Pressing this key saves the form. When pressing F10 ina form which has been edited and whose values havechanged, the radiotelex system asks if the changes shouldbe saved.F3 Delete Generally deletes the whole field if this contains the F1Modify field function.0725

2-3RADIOTELEX 2 OperationF5 Advanced andF6 Procedures These keys are found in some coast station and sub-scriber forms. Altering the values of Advanced and Pro-cedures requires a password.F7 Default This function may be found in other forms. It inserts defaultvalues in the fields where such values are appropriate.General functionsA few keys always have the same function(s):F1Selects in a list or menu, or modifies a field. In most cases,the right arrow key can be used instead of F1.F10Returns to the previous screen, or – from the TELEX andFEC terminals – exits Radiotelex. In most cases, the leftarrow key can be used instead of F10.Space barCorresponds to the F1 and right arrow keys in selectionlists (e.g. a list of messages).Shift-F1 andF11In addition to the information in this manual, Radiotelexoffers detailed on-line help information. To get help at anytime, press either shift-F1 or F11 in the relevant field.Fast keysFast keys are key combinations of the Alt key and a function key, e.g. F1.Pressing the Alt key pops up a table of fast keys. Fast keys may be changedin the setup part of Radiotelex.There are also a few short cuts assigned to the Ctrl key. For instance,pressing Ctrl-C takes you to the TELEX terminal or FEC terminal dependenton which part of Radiotelex was used previously.The function of the Alt key is always the same. The function of the Ctrl key,however, depends on the situation. Thus, when communication is takingplace, Ctrl-L toggles logging.0725

2-4RADIOTELEX2 OperationPasswordAs already mentioned, certain areas of Radiotelex are protected by apassword. Such areas can only be altered by technicians who know thepassword. Still, even though the user of the system cannot change the dataof the program, these can always be viewed.The system will tell you when a password is required to change some data:To continue without a passwordpress F3 View only.2.2 TerminalsThe TELEX and FEC terminals are the centres of Radiotelex. From them, thevarious functions of the system can be reached:To swap between the TELEX and FEC terminalsselect:1.F8 Menus2.F1 Mode3. The appropriate terminal.0725

2-5RADIOTELEX 2 OperationThe terminals simulate the printer paper of an old-style TELEX terminal. Thus,characters that have been received or transmitted are shown. Radiotelex hasa terminal for both ARQ (called TELEX in the Radiotelex terminology) andFEC traffic. The TELEX and FEC terminals are operated in the same way, andthe differences are few.The terminals are the centres where all transmissions and receptions areinitiated, and all actions are chosen.The FEC terminal, however, will probably not be used much. It is recom-mended that FEC scans to catch news broadcasts and traffic lists are set upfrom F4 Rx in the TELEX terminal. The news and traffic lists are normallyprinted, while FEC transmissions are rarely used.2.3 Terminal function keysThe terminals operate with two sets of function keys. Which set is useddepends on whether Radiotelex is ‘standby’ (not receiving, calling or transmit-ting), or NOT ‘standby’. Only the TELEX terminal is described below, but theFEC terminal is very similar.Function keys when ‘standby’Rx0725

2-6RADIOTELEX2 OperationF1 Terminalfunctions A window with the ‘standby’ function keys pops up. Unlike theother function keys, F1 Terminal functions is the same whether‘standby’ or not. It is useful when Radiotelex is not ‘stand-by’since the function keys on the screen shown above are then thenot ‘standby’ function key set (shown below). You can selectamong the following:F2 Distress Distress mode.F3 TX Transmission-related functions(setting up, deleting, table of scheduledtransmissions etc.).F4 Rx Receive-related functions (setting up an Rxsession, enabling/disabling Rx etc.).F5 Messages Message handling (creating, copying,deleting etc.).Messages not logged.F6 Subscriber Subscriber handling (creating, copying,deleting etc.).F7 View Selects between the following views:• TELEX connection• TELEX errors• System status• Current scanning• Logged TELEX messages• Traffic historyF8 Menus Selects between the following menus:• Mode• Setup• Service• GuidanceF10 Returnto DOS Exits Radiotelex, performing a backup if wanted.0725

2-7RADIOTELEX 2 OperationFunction keys when not ‘standby’F1 Terminalfunctions The ‘standby’ function keys, described above, becomeavailable in a pop-up window.F2 Bell Transmits the special symbol bell.F3 Time Transmits the current time.F4 Date Transmits the current date.F5 Message Transmission of a message.F6 WRU ‘Who are you?’ The other station is asked to transmit itsanswer back.F7 De Transmits your own answer back.F8 Over Changes direction.F9 Break Breaks the connection.The above function keys are active dependent on the situation. If Radiotelexis the IRS (Information Receiving Station), the keys involving transmission(F2 to F7) are not available.0725

2-8RADIOTELEX2 Operation2.4 BackupsTo make a backup1. From one of the terminals, leave Radiotelex by pressing F10.2. Start up again.Backups can only be made when leaving Radiotelex. When you press F10 atthe terminal to leave Radiotelex, you will be prompted to make a backup.Furthermore, when starting up, Radiotelex will ask whether or not previouslybacked-up data are to be restored.Background information on backupsIn order to meet the GMDSS safety requirements, Radiotelex is alwaysdelivered on a non-volatile board like an EPROM board or flash EPROMboard. This ensures that the Radiotelex program and its initial settings cannotbe lost due to power failure or power off. Furthermore these data cannot beerased by accident.Data (e.g. messages) cannot be saved on this board. In order to save datatemporarily, Radiotelex creates a RAM disk. A RAM disk is used exactly likea normal disk drive, but is a volatile medium: The contents are erased in caseof power failure and when the power is switched off.The RAM disk only provides temporary storage. Therefore, before the poweris switched off, it is necessary to perform backups to ensure that data are notlost but saved on the backup diskette.The non-volatile board on which Radiotelex is delivered, ensures that it isalways possible to communicate using Radiotelex. So even if a backupdiskette that is lost or out of order is an inconvenience, it does not enforce acommunication breakdown.Backup policyBackups should be made regularly, e.g. once every 24 hours. Backups shouldalways be made when subscribers have been created, the setup has beenchanged, or anything else of importance has taken place.In order to keep the backup as short as possible, it is advisable to check thelogged messages (both TELEX and FEC) and the traffic history before making0725

2-9RADIOTELEX 2 Operationthe backup. Then, delete the logged messages that you do not considerimportant. Also, delete the traffic history unless it contains important informa-tion to be kept.Radiotelex on hard diskThe Radiotelex software can be installed on a hard disk as a supplement tothe non-volatile board. The hard disk delivered from the factory is suitable foruse in a maritime environment. However, as a hard disk cannot be completelyreliable, the non-volatile board is always necessary.Data are stored on the hard disk automatically. Therefore, when the Radio-telex program is executed from the hard disk, backup procedures are notnecessary. However, since the hard disk could crash, it is recommended tomake a backup to a diskette at an initial stage when relevant subscribers havebeen created and setup changes have been performed.2.5 TransmissionRadiotelex only supports manual transmissions. There is no scanning of afree signal but Radiotelex sets up the transmitter frequency enabling you tohear when the channel is vacant and the transmission can be initiated.Furthermore you have to type in the call code yourself.The manual transmission form consists of the following fields:0725

2-10RADIOTELEX2 OperationCall code Call code of the destination.Channel type Choose between the following options:• ITU intership channel• ITU coast station channel• Frequencies• ITU distress and safety frequencies.Channel Type the channel number. Not available when ‘Frequen-cies’ has been chosen as channel type.RX frequency Type the RX frequency. Only available when ‘Frequen-cies’ has been chosen as channel type.TX frequency Type the TX frequency. Only available when ‘Frequen-cies’ has been chosen as channel type.When channel or frequency fields have been filled with valid values, thetransceiver is set up with these frequencies. Thus listening to the TXfrequency is enabled. Simply alter the channel or frequency fields until a freechannel has been located.2.6 ScanningIn order to receive an incoming telex call you have to set up an Rx session.Radiotelex only supports a single manually initiated Rx session and it onlysupports scanning of a single frequency. The method for setting up an Rxsession is very similar to performing a manual transmission. The first step todo is to press F4 Rx in the terminal.The Rx window will list the current Rx session (if any). To create a new session(or modify the existing session) press F1 Modify Receiving. In the nextwindow just select the station or subscriber of interest and the channel to scan.Note that only a single frequency can be selected.Press F2 Save when you have selected the station/subscriber and thefrequency. Radiotelex will scan the selected channel continuously until thescheduled Rx is either deleted or manually disabled (in the F5 Rx controlmenu).0725

2-11RADIOTELEX 2 OperationNote that a manual transmission has higher priority than the Rx session. Thisimplies that the Rx session will be “disabled” during the transmission session.The Rx will be restarted once the transmission session is terminated.You may need to update or create a new station/subscriber if the defaultstations provided by Radiotelex does not list the frequency of interest (the twodefault stations “ITU Ship Station Channels” and “ITU Coast Station Channels”only show a subset of the valid ITU channels).2.7 Message handling‘Message handling’ is used to type in messages before transmission, possiblyin order to perform an automatic transmission.To go to the ‘Message handling’ formIn the terminal, press F5 Message.To write a new messageselect ‘New message’.To modify an existing messageselect the relevant message.An existing message can be edited, copied, deleted, renamed and printed.Also, as explained in the following, messages can be imported and exported:0725

2-12RADIOTELEX2 OperationImport of messageTo import a DOS text file to the Radiotelex message system, select F7 Import.The DOS file is specified by browsing the DOS directories.Export of messageIt is also possible to export – i.e. copy to a DOS file – an existing message.The exported file can e.g. be imported by a word processor or copied toanother computer. Selecting F8 Export allows you to specify directory andDOS file name for the selected message,.2.8 Subscriber handlingTo see a list of existing subscriberspress F6 at the terminal.Radiotelex distinguishes between coast stations and subscribers. A sub-scriber is a station without coast station capabilities, e.g. a land telex stationor a ship.To create a new subscriberselect ‘New subscriber’.To modify an existing subscribermove the cursor bar to the relevant subscriber and select F1 Edit TELEXsubscriber.0725

2-13RADIOTELEX 2 OperationSubscriber edition in generalA subscriber may consist of several parts, e.g. a land telex part or a ship telexpart. As some subscriber parts are more complex than others, the edition ofa subscriber part has been divided into three sections where appropriate.These sections are:General partThese general values will always have to be filled in. When asubscriber part has been chosen, the general values are accessed in a form.Advanced This is a set of default values that will rarely have to be changed.ProceduresProcedures are used to perform automatic transmissions. Aprocedure provides a list of instructions on how to communicate to a specificstation in special cases. Normally no procedures are defined for a subscriber.Advanced and Procedures are accessed from the form containing thegeneral values. Furthermore, Advanced and Procedures are password-protected. Still, the contents can always be viewed.Subscriber partsA subscriber consists of several parts. The following subscriber parts can bedefined: Land telex, ship telex, telefax, telephone modem, voice phone, voicebank phone, Radiotelex letter, telegram and satellite. However, in most casesonly one or two of the parts will be detailed for each subscriber.When the properties of a subscriber change, e.g. if a fax number has to beadded to the subscriber, it is easy to edit the existing subscriber, adding therelevant details.To delete a part of a subscriberselect the relevant part and press F3 Delete in the form describing the part.In order to transmit to a subscriber, it is necessary that a coast station supportsthe communication form (except for ship telex). For instance the satellite partis not used since coast stations cannot handle this even though it has beendefined in the recommendations. Refer to the section about land telex below.Below some of the subscriber parts are described. Please refer to theRadiotelex on-line help as well.0725

2-14RADIOTELEX2 OperationLand telexLand telex has two fields that need to be filled in: country code and telexnumber. The country code field is described in the chapter ‘Coast stationsetup’ in the last part of this manual – ‘Configuration’. The telex number is thesubscriber’s telex number without any land telex country code.To reach an Inmarsat A, B or C station (both ship and land stations), enter thecountry abbreviation ‘SAT’ and the telex number of the station. Since thecountry abbreviation ‘SAT’ is not used by any coast station, during thetransmission setup Radiotelex will ask for a direction code. Enter the Inmarsatregion code (e.g. 581 for Atlantic Ocean Region East).Ship telexIt is sufficient to enter the master frequencies. The slave frequencies areoptional. For information on the difference between the master and slavefrequencies, please refer to the chapter ‘Coast station setup’ in the last partof this manual – ‘Configuration’. The on-line help may be useful as well.SatelliteThe satellite option is not useful since it is not supported by many coaststations (if any at all). To transmit a telex to an Inmarsat A, B or C ship, pleaserefer to the above description of land telex.Hiding and recovering subscribersSubscribers that are not used for a long period of time can be hidden insteadof deleted. When they are needed again, they can be recovered.To hide a subscribermove the cursor bar to the relevant subscriber, and select F5 Hide.To recover a subscriberselect F6 Recover for a list of hidden subscribers, and select the subscriberto be recovered.2.9 VIEW functionThe F7 View function provides information that may be useful at differentpoints. The function differs a bit dependent on the mode.0725

2-15RADIOTELEX 2 OperationView is not only available in the terminal. It can also be used in e.g. the receiveand transmission parts of Radiotelex.Pressing F7 View in the TELEX part of the system will display a number ofselectable items. These are described below. The corresponding View itemsof the FEC part of the system are quite similar to the ones shown here:TELEX connectionshows information on the present or latest TELEX (ARQ) connection. Thisinformation includes: subscriber, coast station and frequencies.TELEX errorsdetails the quality of the connection by giving information about the numberof repetitions. Both the total number and the number relative to the total oftransmitted and received characters are shown.System statuscontains information about the schedules, modem and frequencies.Logged TELEX messageskeeps up to a hundred logged TELEX messages. When the total reaches onehundred, the oldest message is deleted every time a new message is logged.In the setup part of Radiotelex, it can be specified what information is to belogged.Similarly, Radiotelex can log a hundred FEC messages and a hundreddistress messages.Traffic historydetails what communication took place when. If, for instance, a messageneeds several attempts to be transmitted successfully, the traffic history willdetail each attempt.2.10 DistressThe telex distress frequencies are not scanned by coast stations. A distresstransmission must always be initiated by the DSC function. This will set up thefrequencies of the radio as indicated in the DSC call or reply. When thedistress transmission has been set up by the DSC function and the commu-nication has begun, the parties communicating can decide to use anotherfrequency without DSC usage.0725

2-16RADIOTELEX2 OperationWhen Radiotelex is communicating, distress mode cannot be entered. Break theconnection first, then select distress mode. Or more likely, just make the DSCdistress call and Radiotelex will stop communicating since DSC has priority.When entering distress mode, all scans and transmissions set up outsidedistress mode are disabled. That is because distress mode is a special shelldisclosing all other activities – only the distress activity takes place. Allcommunication is both printed and logged no matter what the setup is likeoutside distress mode. Also, the retry schedule is disabled. However, theTELEX (ARQ) terminal and the FEC terminal are used even in distress mode.The same goes for ‘Message handling’, which is not affected either.When exitting distress mode, schedules (scans and transmissions) set upoutside distress mode are restored.Distress modeTo enter distress mode• press Alt-D (anywhere) or:• press F2 (in the TELEX or FEC terminals)Note:Distress may only be used when your ship is in distress. If participating inanother ship’s distress communication, do not enter distress mode but use thenormal facilities.To exit distress mode press Alt-D.0725

2-17RADIOTELEX 2 OperationDistress TransmissionTo set up a broadcast FEC or selective FEC transmissionselect F2 TX FEC.To set up an ARQ transmission select F3 TX ARQ.Even though distress mode is a special shell that discloses all other activities,the normal FEC and TELEX (ARQ) terminals respectively are used for thiscommunication.To change the frequency to be transmitted onselect F4 Scan/Frq.F5 Message contains the normal message handling. Therefore it is possibleto write a distress message beforehand and then just edit to fill in the lastdetails if the distress situation occurs.Distress SCAN function F4 Scan/Frq allows for simple selection of a distress frequency.Distress VIEW functionThis function resembles the View function found outside distress mode.However, in distress mode only System status, and Logged distressmessages are available.0725

2-18RADIOTELEX2 OperationSimilar to TELEX and FEC, only a hundred distress messages can be logged.After that, the oldest distress message is overwritten when a new messageis logged.2.11 Status messagesBelow various status messages of Radiotelex are explained. These mes-sages appear in the lowest part of the screen.No usable COM ports availableNo serial communication ports are available. If any are installed, they are usedby other hardware like e.g. a mouse.Searching for external equipmentSearching for the Radiotelex board.External equipment foundThe Radiotelex board has been located.No external equipment found yet !The Radiotelex board has not yet been found.The connection to modem has been lost !The Radiotelex program cannot communicate with the Radiotelex modemany longer. First, check cable connections between the computer and themodem. Then, exit Radiotelex and start again.Connecting to modem ...The modem has been located, and the communication works fine. Initializinginformation between the computer and the modem is exchanged.The modem is in ‘standby’ stateRadiotelex is not calling, transmitting, receiving or scanning. The modem isidle.Fatal error from modem (read the Traffic History) – connection locked !The Radiotelex program and the modem are out of synchronization. Pleaseread the Traffic History, and report to your dealer. Exit Radiotelex and restart.Updating modem for transmission ...A transmission has been initiated. The transmission details are currently0725

2-19RADIOTELEX 2 Operationbeing transferred from the computer to the modem, and the modem is settingup the radio.Modem is calling ...Radiotelex is calling a coast or a ship station.TELEX communication in progress !Telex (ARQ) communication is in progress. The radio link between the twoinvolved radios and modems has been established, and actual communica-tion has begun or is about to begin.TELEX communication requires attention! Go to TELEX (ARQ) terminalTelex (ARQ) communication is now taking place. The communication is notan automatic telex transmission that can take place unattended. Radiotelexis not in the TELEX (ARQ) terminal currently: Therefore, this status messagetells the operator to go to the TELEX (ARQ) terminal and pay attention to thecommunication.Reception in progressIn a telex (ARQ) connection, Radiotelex is now receiving. Only the F8 Overand F9 Break function keys are available.Changing direction ...The operator has pressed F8 Over to change the direction.Text transmission allowedThe operator can now transmit any text by typing the text manually, or bypressing F5 Message to select an already typed in message. All function keysof the terminal can be used.TELEX rephasing in progress !An MF/HF radio is not always an easy medium to deal with. If a radioconnection is bad and repetition has occurred 32 times in a row, rephasingmay begin. During rephasing, the two modems try to synchronize again.The transmission has failed !The call to the station did not succeed, or possibly a message was nottransmitted completely. This status message is also issued if F9 Break ispressed.Break in progressA break has been issued by Radiotelex.0725

2-20RADIOTELEX2 OperationFEC reception in progress !FEC communication is now being received. The transmission being receivedcan be a broadcast FEC transmission or a selective FEC transmission to yourship.The modem is disabledThe modem has been disabled. See explanation below.Modem disabled by function Rx ControlScanning has been disabled by the scan control function. Scanning can beenabled again in the terminal function F4 Rx. When the modem is disabled,all scanning is stopped, and transmission cannot take place.Scanning stopped, enabling listening to own TX frequencyA transmission to a ship is being set up. In order to let the operator check ifthe channel is vacant, all scanning has been stopped, and the radio has beenset up with the TX frequency in the receiver.TELEX messages logged - #Number of logged TELEX messages. The maximum is a hundred. If ahundred TELEX messages have been logged, the next time a message islogged, the oldest message is deleted. For further information, please referto ‘TELEX log setup’ in the ‘Configuration’ section.FEC messages logged - #Number of logged FEC messages. The maximum is a hundred. If a hundredFEC messages have been logged, next time a message is logged, the oldestmessage is deleted. For further information, please refer to ‘FEC log setup’in the ‘Configuration’ section.The radio is busy !Right after switching on, in order to have a frequency stability of ± 10 Hz, theradio has to warm up. During this warm-up, the above message is issued.If the radio is being configured, the radio is also busy.When used for telephony, the status message ‘The radio is not ready’ isshown.The radio is controlled by DSC !The DSC function has taken control, and Radiotelex has stopped all scanningand all transmission.0725

2-21RADIOTELEX 2 OperationThe radio is not ready !The control unit is not in telex mode, or the handset is off hook.The radio is disconnected !No communication with the radio. The radio may be switched off.Transmission to connected FEC subscriber. Go to FEC terminal.FEC transmission is now taking place. Radiotelex is not in the FEC terminalcurrently. Therefore, this status message tells the operator to go to the FECterminal to pay attention to the transmission.The modem is listening to a single frequencyListening for traffic. A scan containing only a single frequency has been setup.Secret reception in progress !Radiotelex offers the possibility of hiding the communication. Refer to TELEXsecret setup for further details.Distress messages logged - #In distress mode, all communication is logged. Only a hundred messages arekept in the log. The oldest logged message will then be deleted when a newone is logged.The modem is listening to a single frequency for FEC and ARQIn distress mode, Radiotelex listens for both FEC and ARQ traffic automatically.0725

3-1RADIOTELEX 3 Installation and configuration3 Installation and configuration3.1 InstallationSystem wiringsBelow system wirings are shown for different configurations.Setting time and dateInformation on date and time is shown in the upper right corner of the screen.The system uses date and time to stamp received and sent messages.Before installation or execution, the date and time stamps can be checked andset. This is done by means of the two DOS commands ‘time’ and ‘date’.Setting timeIf Radiotelex is running, return to DOS by exitting Radiotelex. At the DOSprompt, write ‘time’ and press enter.DOS replies e.g.: Current time is 2:49:02.65pEnter new time: _If the time is correct, just press enter. Otherwise enter a new time, e.g. 8:44p,and press enter.Setting dateIf Radiotelex is running, return to DOS by exitting Radiotelex. At the DOSprompt, write: ‘date’ and press enter.DOS replies e.g.: Current date is Thu 12-19-1996Enter new date (mm-dd-yy): _If the date is correct, just press enter. Otherwise enter a new date, e.g. 12-20-96, and press enter.0725

3-2RADIOTELEX3 Installation and configurationInstallation on flash EPROM boardThe flash memory board is a non-volatile medium, which complies with theGMDSS requirements.The flash memory board facilitates installation. Insert the Radiotelex flashmemory installation diskette in the computer, and type:a: [b:] enterinstall enterAny software applications present on the flash memory board are nowdeleted, and the Radiotelex program is installed. This process may take up tofifteen minutes.Installation on hard diskNormally, the Radiotelex program is installed on a non-volatile medium, likethe flash memory board. A RAM disk is used for temporary storage, and it isnecessary to make backups.However, the Radiotelex program can also be installed on a hard disk. In that case,it is not necessary to make backups. Still, as a hard disk can crash, the non-volatileinstallation is necessary to comply with the requirements of the GMDSS.Thus, after the installation has been finished, it is advisable to make onebackup diskette, as described in this chapter. If it becomes necessary to usethe non-volatile installation (e.g. the flash memory board), this backupdiskette can be used when Radiotelex prompts to restore. This ensures thatthe basic installation is the same as when used on the hard disk.0725

$3-3RADIOTELEX 3 Installation and configurationTo install the Radiotelex programchange the home directory and where the Radiotelex executable file shouldbe installed, by means of F3 and F2 respectively. When satisfied, start theinstallation by pressing F1.Config.sys and Autoexec.batThe config.sys and autoexec.bat files should be configured to providemaximum available memory and to use smartdrv. Below examples of config.sysand autoexec.bat are shown. These may need some modification, e.g. it isassumed that only one hard disk is available and that a network is not installed(lastdrive=c).Config.sysdevice=c:\dos\himem.sysdevice=c:\dos\emm386.exe noemsdos=high,umbfiles=20buffers=40shell=c:\dos\command.com c:\dos /e:256 /plastdrive=cfcbs=1Autoexec.bat@echo offloadhigh c:\dos\fastopen c:loadhigh c:\dos\doskeyloadhigh c:\dos\smartdrv /xprompt $p$gpath c:\dos;c:\radiotlxset temp=c:\dosModem setupThe modem setup requires various information.To supply informationpress:1.F8 Menus.2.F2 Setup.3.F5 Modem Setup.0725$