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Usals what is this?

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  • satman72
    Experienced Board Member
    • Jun 2010
    • 3550

    Usals what is this?

    This is brief description of Usals protocol it is used by latest boxes and works on new motors.

    Universal Satellites Automatic Location System (USALS), also known (unofficially) as DiSEqC 1.3, Go X or Go to XX is a satellite dish motor protocol that automatically creates a list of available satellite positions in a motorised satellite dish setup. It is used in conjunction with the DiSEqC 1.2 protocol. It was developed by STAB, an Italian motor manufacturer, who still make the majority of USALS compatible motors.

    Software on the satellite receiver (or external positioner) calculates the position of all available satellites from an initial location (input by the user), which is the latitude and longitude relative to Earth. Calculated positions can differ ±0.1 degrees from the offset. This is adjusted automatically and does not require previous technical knowledge.

    Compared to DiSEqC 1.2, it is not necessary to manually search and store every known satellite position. Pointing to a known satellite position (for example 19.2șE) is enough; this position will act as the central point, and the USALS system will then calculate visible satellites position within the offset.

    Receivers are aligned to the satellite most southern to their position in the northern hemisphere, or the northernmost in the southern hemisphere.

    Finally here is the link to calculate your longitude and latitude needed to set up an Usals motor.
    _http://www.multimap.com/
    Just click on thanks button if my post has helped you
    Don't send me cline requests, technical or premium server questions in PM! I'll not answer!
  • runmo
    Experienced Board Member
    • Jun 2010
    • 6120

    #2
    Re: Usals what is this?

    Are there other websites where you can find exact latitude and longitude for each country?
    I've tought it was necessary to put correct longitude and latitude in usals settings before it can start searching automaticly.

    regards
    runmo

    Comment

    • sonc
      Experienced Board Member
      • Jun 2010
      • 1568

      #3
      Re: Usals what is this?

      Originally posted by runmo
      Are there other websites where you can find exact latitude and longitude for each country?
      I've tought it was necessary to put correct longitude and latitude in usals settings before it can start searching automaticly.

      regards
      runmo
      This one looks pretty good, and was recommended on another site:

      _http://www.dishpointer.com

      Comment

      • satman72
        Experienced Board Member
        • Jun 2010
        • 3550

        #4
        Re: Usals what is this?

        The link I've posted allows you to input not just the city where you're but the street too, for this I've used it for my installations.

        Originally posted by runmo
        Are there other websites where you can find exact latitude and longitude for each country?
        I've tought it was necessary to put correct longitude and latitude in usals settings before it can start searching automaticly.

        regards
        runmo
        No you can input those values also some time then you've installed the motor, when you input longitude and latitude the motor don't moves, just stores those and uses to move to exact point when you select another satellite on your box.
        Just click on thanks button if my post has helped you
        Don't send me cline requests, technical or premium server questions in PM! I'll not answer!

        Comment

        • mikelo
          Experienced Board Member
          • Sep 2010
          • 1680

          #5
          Re: Usals what is this?

          Universal Satellites Automatic Location System (USALS) is very useful and motor that I use has USALS. However, I still get better signal strength with manual settings without using USALS.

          Comment

          • kasper17
            Board Senior Member
            • Apr 2010
            • 209

            #6
            Re: Usals what is this?

            I've tried this with DVBViewer Pro, but It didn't work !!
            Please Guys...Any Ideas !!!!???

            Comment

            • mikelo
              Experienced Board Member
              • Sep 2010
              • 1680

              #7
              Re: Usals what is this?

              USALS is supported on DVBViewer Pro from version 3.6.1. and if you have this version or newer it should work. So, problem is in PC card probably.

              Comment

              • satman72
                Experienced Board Member
                • Jun 2010
                • 3550

                #8
                Re: Usals what is this?

                Some other infos about USALS standard:

                USALS and DisEqC 1.2


                In 1997 thanks to EUTELSAT-STAB collaboration, all commands of the DisEqC 1.2 standard were developed to operate dish motors directly from the receiver via the LNb cable.

                The DisEqC 1.2 system has been adopted as a standard by satellite receiver manufacturers. It needs several adjustments to achieve correct dish alignment including correct southern alignment, manual setting of all satellite positions, limit settings etc.

                Since 1999, the main aim of STAB research has been to solve the problems associated with the dish motor installation and to enable end users to buy STAB motors from their retailer and install them easily, anywhere in the world. The new USALS program has enabled this goal to be reached.

                USALS is a calculation system processed by STAB of Italy and given free to all manufacturers of satellite receivers and PC cards. The program enables the receiver to calculate the positions of all satellites in orbit with a precision of better than 0.1 degrees with reference to the installation site. This is achieved automatically without the need for specialised technical knowledge.

                Please remember that USALS is a program and not a communication protocol. In collaboration with EUTELSAT, the DisEqC 1.2 protocol string has been defined to drive the motors in "Drive Motor to Angular Position (degree)" mode, which is the only command itilised by the USALS program. The USALS program is, therefore, an advanced option of the DisEqC 1.2 protocol.

                How to determine whether a receiver complies with the USALS standard?
                STAB authorises each manufacturer to use the USALS program ONLY after testing in the laboratory. The receive must have the following:

                1. The "STAB-USALS" logo printed on its box.
                2. The USALS option under "Motor Setting" in the on-screen menu.
                Any other description such as "Go X", "Go To XX'", "DisEqC1.3" have not been authorised by STAB so the correct working of the program can not be guaranteed.

                Advantages of USALS
                If the dish is not initially aligned perfectly to face due south (in the Northern hemisphere) then the search for satellites is normallt problematic. However, with USALS, this inconvenience no longer exists because the program calculates the positions of all "visible" satellites, on the basis of latitude and longitude of the installation site, with a precision of +/- 0.05 degrees. This is possible because the USALS program also decides the direction of rotation.

                With DisEqC1.2 a manual search and memorisation of every satellite position is required. However, with USALS all you have to do is point the dish towards a satellite at the centre of the arc and USALD will automatically find and store the rest.

                With DisEqC1.2, the user is obliged to seek the help of an expert every time a satellite position has been changed or a new one activated. However, with USALS, you need only to add the name of the new satellite to the list, and its orbital position. The motor will move to the new position without need for further programming or alignment!

                As the user doesn't need to carry out complicated adjustments or programming, the risk of making a mistake is greatly reduced. This is unlike standard DisEqC1.2 where a small error can require the installation procedure to be started from the beginning.
                Just click on thanks button if my post has helped you
                Don't send me cline requests, technical or premium server questions in PM! I'll not answer!

                Comment

                • tombutler
                  Junior Member
                  • Nov 2010
                  • 18

                  #9
                  Re: Usals what is this?

                  Originally posted by sonc
                  This one looks pretty good, and was recommended on another site:

                  _http://www.dishpointer.com
                  Very good site. Compared the coordinates from this site to those I got from a Sat Nav and they both gave the same reading down to 3 decimal places. I think this should be more than accurate enough for most receivers if using Usals.

                  Comment

                  • anacondama
                    Banned
                    • Jul 2010
                    • 865

                    #10
                    Re: Usals what is this?

                    try this :
                    _http://www.igp.net/antenna_alignment/Index.php
                    that may help you
                    regards

                    Comment

                    • satman72
                      Experienced Board Member
                      • Jun 2010
                      • 3550

                      #11
                      Re: Usals what is this?

                      It is funny, on this site _http://www.dishpointer.com I can see my roof with my dish!!!
                      Just click on thanks button if my post has helped you
                      Don't send me cline requests, technical or premium server questions in PM! I'll not answer!

                      Comment

                      • vimmers
                        Experienced Board Member
                        • Jun 2010
                        • 1188

                        #12
                        Re: Usals what is this?

                        me to but i can also see that the satellite pictures are at least 4 years old
                        cos there holding a car in my driveway that i dont got anymore

                        Comment

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