problem with gps viewer

Hi

I am using venus 6 to log some data

then in skytraq gps viewer i do

datalog-> LOG READ BATCH

this saves a file data.log in my hardrive

THen I Do

datalog-> LOG Decompress

THis creates the following files

  1. DATA0.kml for google earth. This works fine with google earth and gives right locations

  2. Data.logg (this contains a the GPS data in a table format)

  3. rmc.nmea (this contains the rmc sentences in nmea format)

Now if i go to GPS visuliser at http://www.gpsvisualizer.com and give it the RMC file to convert to KML, the shape of the track is same is SKY-TRAQ kml file, but it is situated about 100 miles off in the north sea.

I have also tested other software to convert from RMC to KML and all are in the northsea. so i think the RMC generated by the skytraq VPS viewr software may be wrong or am i doing something wrong here?

Hi there,

i hope somebody can help me with my problem. I could use the GPS Viewer until some days ago, now i can start the program, the led flashes, but the X610 couldn’t find any satellites. There is no error message. It searches for satellites, then the led stops flashing and nothing else happens. I recognized, that there is nothing in the folder “GPS Viewer” in the windows directory. Have there to be any entries?

There is COM2 for GPS-Programs and COM4 for GPS-Hardware at 57600 Baud in the configuration. Is this the standard configuration?

It works fine, now the program is without function.

Mathew, you should start a separate thread because this is a different issue than teekay’s. But in any case, the Venus 6 LED should do the following:

  1. Flash a few times immediately after power-up.

  2. Then stay on solid while it hunts for satellites. During this time it should output NMEA sentences, but with a constant value (e.g. 0.0000) for Latitude and Longitude and an incorrect but increasing value for time.

  3. When it locks to 4 or more satellites, the LED should begin flashing again. It will toggle once per sample period.

If the LED turns off and stays off, then in my experience it could be that the module has gone bad. One thing to check is the current draw on the VBAT pin. The current draw should be very low - e.g. if you have connected VBAT to a backup battery through a 1K ohm resistor, then you should measure battery voltage at VBAT. If instead you measure a voltage very close to zero, then something has gone wrong with the module. We have seen this happen a few times, and AFAIK it means it’s time to throw the module away.

Another thing to check is the antenna connection, and the solder joints between the antenna connector and the board.

Sorry, I don’t have any information to help teekay. In our testing, there is no 100 mile+ error in latitude and longitude from GPRMC. But we have only tested in the States. You must be near the Prime Meridian, maybe even in the eastern hemisphere. I suppose there could be a bug related to that.

sorry I should have reported earlier

I posted this question to skytraq and they gave me a newer version of the GPS View software and the error in RMC is no longer there.

the new version is 0.4.543