no NMEA data

madmitch · Posted: Sun May 22, 2005 5:45 pm Post subject: no NMEA data

hi i am new to this just got a icn 510 when i switch it on and check for gps it says error no nmea data any help will be welcome thanks ken Question

Scruge · Posted: Tue May 24, 2005 3:13 am Post subject: Re: no NMEA data

Clogs · Occasional Visitor Joined: May 02, 2005 Posts: 12

I have the same NEMA error message during satellite acquisition.

Lately I have found my lock-on time is longer than it was before I installed Service Pack 1. It might be my imagination but it seems to speed up acquisition if you bring up the satellite screen and watch what is happening during the lock-on process. It seems that because I'm taking an active interest in the satellites then Navman speeds up the process.

crep · Occasional Visitor Joined: May 09, 2005 Posts: 5

madmitch · Posted: Tue May 24, 2005 9:13 pm Post subject: no nmea

thanks for the feedback it only happened after i instaled service pack 1 Question

gambitgander · Posted: Thu May 26, 2005 4:58 pm Post subject:

The No NMEA message will only show when the GPS is not receiving any signal : ie: indoors away from the windows. Safest way to check is to try it outside.

madmitch · Posted: Thu May 26, 2005 7:38 pm Post subject: no nmea

yes to all outside i live 5-7miles from nearest town i have tried reset somtimes when i switch it on it takes up to 20 mins to find sat Question

navman told me to start shutdown remove sd card and restart then re insert sd card no help still comes up no nmea data will be paying a visit to halfords Twisted Evil

bootruss · Regular Visitor Joined: Feb 17, 2005 Posts: 60

..good, take it back say you 've spoke to navman with no joy and after a phone call to the navman techies who will try the bloody obvious,condemn it as faulty and you can have a nice new one!!

SJohnson1999 · Posted: Mon Oct 03, 2005 8:10 pm Post subject:

Just wondering whether you returned the unit and got a replacement ? If so , did it fix the problem ?

I bought a 520 the other day and having various problems getting a lock, ranging from "no nmea data", to it locking in only for it to drop then reconnect and drop again.

I did get a lock and used it successfully but the return journey I had no lock at all.

I have tried it outside and again it seems pot luck as to whether it will get the GPS lock.

It seems a good bit of kit but if its going to be unreliable then I'd rather swap the unit or try a different manufacturer.

Dilemma · Regular Visitor Joined: Sep 05, 2005 Posts: 130

I used to suffer the same fate with satellite fixes, but I read on the Navman forum that if you delete the backup directory in the Flash Disk via MS activesync it will recreate it self when next booted; that it fixed another problem so I thought what the heck i'd try it. I did this and perhaps coicidental, perhaps not; either way no issue since.

SJohnson1999 · Posted: Tue Oct 04, 2005 5:59 pm Post subject:

Thanks, deleted the directory and then tried the 520. Within a couple of minutes I got a lock and it was fine. Turned off the unit at the destination and maybe an hour or so later switched it on again. Same result - a lock within a couple of minutes (tops).

The third time again got a lock but then tried to route to MyHome and got some error across the top of screen, the only way to clear this was to switch the battery off and then on, this cleared the error and a lock was established.

Fingers crossed this seems to have sorted the problem. :D

Dilemma · Regular Visitor Joined: Sep 05, 2005 Posts: 130

ginbhandal · Occasional Visitor Joined: Nov 03, 2005 Posts: 2

Hi I' quite new to all this so please bear with me! - could you talk me through the process of what you helped out with above. It also takes my quite a long time to get a fix, and I've not got a heated windscreen and am in clear view of the sky - I remember the first time I turned on I got a fix very quickly but since then it seems to be taking longer and longer.

Any suggestions?

Dilemma · Regular Visitor Joined: Sep 05, 2005 Posts: 130

Certainly,

Connect your iCN to your PC via the USB cable and allow it to be detected. Using MS Activesync, browse your iCN for folders/directories and locate the folder called 'Backup' on your device on the 'Flash Disk' drive. Then simply delete it, and unplug your iCN from the PC.

Turn off your unit using the switch at the rear of the unit, wait a few seconds and then turn it back on again. Your unit will then rebuild it's file structure and restart, thats it...

Good luck.

ginbhandal · Occasional Visitor Joined: Nov 03, 2005 Posts: 2

thanks very much dilemma, and also for the quick response. i'll try this when I get home from work! am I right in saying this procedure is completely safe for the maps etc stored on the device?

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