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Thread: BU-353 help with SirfDEMO

  1. #1
    Constant Bitrate
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    BU-353 help with SirfDEMO

    To people who don't know how to use sirfdemo, PLEASE DONT HELP ME AS YOU YOURSELF WILL SCREW UP YOUR GPS, I know what I am doing

    I need a copy of the almanac and Ephemeris file from another BU-353 host

    !!!!DO NOT CLICK ANY MENU OPTIONS IF YOU DONT KNOW WHAT YOUR DOING!!!!

    Steps to be done:
    1) download latest surfdemo (attached to this post)
    2) when you open it, you get the connection screen, choose your com port and baud rate 4800.
    3) From Action Menu, you should see Open Data Source, the GPS data will start appearing.
    4) You need to switch to Sirf mode to download the almanac and ephemeris data from the BU-353 (which mine is corrupt is why i need a copy). So from Action menu again, select Switch to Surf Protocol, NMEA window will stop scrolling, and the Sirf binary window data will start running.
    5) Goto Poll menu, then select Almanac, and save the file. Do that for Ephemeris also.
    6) please host those files here....
    7) Don't forget to switch back to NMEA from Action menu, "Switch to NMEA Protocol" select baud 4800 from the drop list, then SEND.
    8) you may close surfdemo

    All done!
    Please get me those 2 files i want to try to ressurect my BU-353 heheheh
    Attached Files Attached Files

  2. #2
    What can I say? I like serial. Curiosity's Avatar
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    Hey that version saves the files. Nice!
    Attached Files Attached Files

  3. #3
    Constant Bitrate
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    thank you, lets see if it works

  4. #4
    Constant Bitrate
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    good news and bad news, we have the data, but sirfdemo doesnt upload to bu-353, the command is rejected, how lame is that, anyways it's late now im at my moms, ill leave gps plugged there and visit tomorrow maybe a couple days near the window will fix it LOL

  5. #5
    What can I say? I like serial. Curiosity's Avatar
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    Yeah maybe. Try a reset if not. It might clear out some bad settings.

  6. #6
    Maximum Bitrate
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    Hello, open GPS, and remove onboard battery. Will reset to factory defaults.

    Have fun.
    F6 Tornado Project Log ; HP Blackbird Watercooled Server

    Beta Tester for Centrafuse and 3dConnexion (No business affiliation with either)

  7. #7
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    Hello (sarcastic?) I know what I'm doing because I already did that, still doesn't lock sats..

  8. #8
    What can I say? I like serial. Curiosity's Avatar
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    Does it show any SVs at all or are they all blank in NMEA and SiRF? Is GSV just showing ,,,,,,,,,,? I'm just wondering if it's picking up nothing or the signals are so weak that it doesn't lock.

  9. #9
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    i run it thru gpsinfo and iguidance, on a factory reset it looks for 12 birds, however, all the signals never go above 0%, all dead in the water, even though i leave it on for hours and daysd in plain sky view, im leaving it at my moms on the gallary, maybe one day it'll work, who knows, if not, theres the 818x gps comming in this week hopefully that i ordered at 5Hz, i'll post a report on it since i havn't seen it mentioned during the search i did

  10. #10
    What can I say? I like serial. Curiosity's Avatar
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    That could happen if GSV was set to 0 which disables it.

    But then with a new 5Hz who cares!

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