Results 1 to 6 of 6

Thread: "Low signal from GPS" message criteria

  1. #1
    FLAC is for flaccid parksgm's Avatar
    Join Date
    Dec 2005
    Location
    Dallas, Texas
    Posts
    1,119

    "Low signal from GPS" message criteria

    As I am driving, I've recently noticed that SD is dimming the Nav screen and displaying "low signal from GPS" intermittently while I'm in motion. The message usually goes away after 1-5 seconds, but then returns at varying intervals. Sometimes, it returns in 3-4 seconds, while at other times, there will be a 3 to 4 minute interval. The GPS digimod shows that the receiver is seeing at least three satellites when the message appears. When the message is not there, Nav works as expected.

    I've never had this problem before, and I have not moved my GPS receiver.

    So, what causes the "low signal from GPS" message to be triggered within SD? Could I have a COM port problem of some sort that is preventing constant data transmission from the receiver (this doesn't seem likely, but I can't think of many other explanations).

  2. #2
    Neither darque nor pervert DarquePervert's Avatar
    Join Date
    Apr 2004
    Location
    Elsewhere
    Posts
    13,948
    I believe this message comes down when you don't have a lock to three or more satellites.
    Have you looked in the FAQ yet?
    How about the Wiki?



    Under normal circumstances, a signature would go here.

  3. #3
    FLAC is for flaccid parksgm's Avatar
    Join Date
    Dec 2005
    Location
    Dallas, Texas
    Posts
    1,119
    Quote Originally Posted by DarquePervert View Post
    I believe this message comes down when you don't have a lock to three or more satellites.
    Yeah...it's weird that it just started popping up. I haven't changed anything with regard to the GPS receiver positioning or software. I did rearrange some COM ports after I installed a BT dongle, but if something were screwed up there I would think the GPS would just not work rather than give an intermittent low signal state.

  4. #4
    Newbie
    Join Date
    Jun 2007
    Location
    Halsteren, the Netherlands
    Posts
    14
    I have the same issue.
    Cant' trust on this navigation always stops when you need it most or wont even bother starting at all.
    gps mouse is in the same position - in fornt of windscreen- as where I put my (stand alone)TomTom gps. (yes, tom tom: this at least works 100%)

  5. #5
    Low Bitrate
    Join Date
    Jul 2005
    Location
    Colorado
    Posts
    59
    I was constantly getting "Low signal from GPS" warning message displayed. Same results using BU-353 or Garmin GPS18 with Spanner. Typically I have 6+ satellites in lock when driving out in the open, and it SD still does this. In my setup SD also quits updating the map for 15-20 seconds then makes huge jumps when it decides to update again.

    I gave up on SD/mappoint and now use NRoute run as an external app from SD. The street or topo maps update smoothly, accurately, and never drop out.

    I think it is a SD software issue when it reads the com port gps data stream. None of my other GPS applications (NRoute/TOPO/City Navigator, S&T) behave the way SD/mappoint does with my two GPS receivers.

  6. #6
    FLAC is for flaccid parksgm's Avatar
    Join Date
    Dec 2005
    Location
    Dallas, Texas
    Posts
    1,119
    Quote Originally Posted by jayearl View Post
    I was constantly getting "Low signal from GPS" warning message displayed. Same results using BU-353 or Garmin GPS18 with Spanner. Typically I have 6+ satellites in lock when driving out in the open, and it SD still does this. In my setup SD also quits updating the map for 15-20 seconds then makes huge jumps when it decides to update again.

    I gave up on SD/mappoint and now use NRoute run as an external app from SD. The street or topo maps update smoothly, accurately, and never drop out.

    I think it is a SD software issue when it reads the com port gps data stream. None of my other GPS applications (NRoute/TOPO/City Navigator, S&T) behave the way SD/mappoint does with my two GPS receivers.
    That's very helpful information, as it will keep me from hunting for whatever I might have been doing wrong.

    The odd thing is though, that this behavior just started with my install. I added a bluetooth dongle, which involved rearranging some COM ports, and I _think_ I begin to have problems after that install. I'll check my port settings, and see if any baud rates are inconsistent/unmatched.

Similar Threads

  1. If you have VIA Boards and NO SIGNAL message
    By masch in forum LCD/Display
    Replies: 28
    Last Post: 01-09-2010, 07:16 PM
  2. Hibernation / Resume issue with PhoCo
    By zorro in forum Centrafuse
    Replies: 15
    Last Post: 10-09-2007, 01:21 AM
  3. Replies: 0
    Last Post: 05-02-2005, 06:13 AM
  4. Reconnect on loss of signal
    By ric355 in forum Map Monkey
    Replies: 12
    Last Post: 03-03-2005, 03:41 PM
  5. FS: LCD Controllers - $90.00+shipping
    By infrared in forum Classified Archive
    Replies: 98
    Last Post: 07-20-2003, 08:30 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •