Bu-353 Lag

**silv3rman** · 05-24-2007, 07:02 PM

Hello. I am running iGuidance 3.0.1 with a BU-353. The lag is around 5 seconds, meaning I pass a street and 5 seconds later my GPS shows me passing the street. I have read that if reset the GPS using Sirfdemo then it fixes the lag. When I run Sirfdemo I am unable to switch to "sirf signal" therefore unable to do anything. I have tried switching around the bps but it will only work on the 4800. Is anyone familiar with this? If it helps I am running XP Pro. Thanks.

**DarquePervert** · 05-24-2007, 10:37 PM

What hardware are you running?

I'd be willing to bet that it's more the map software that's lagging due to slow hardware, not the GPS.
I could be wrong....

**silv3rman** · 05-24-2007, 11:05 PM

It's running on 512MB RAM, MII1200, 1.2GHz processor, 250GB hdd. That would make sense I suppose... now that you mention it sometimes music is a little slow but I thought it was always due to the amount of songs I have, maybe not. I'll try to remove some services and see how it goes. Thanks.

**Curiosity** · 05-24-2007, 11:42 PM

There's something wrong with the BU-353 if it can't switch baud rates or switch to sirf mode. Someone else did a factory reset in Sirfdemo and fixed the delay, so try that. Then try to switch to SiRF and back to NMEA at a different baud.

**silv3rman** · 05-25-2007, 10:46 AM

Hmm. Curiousity, do you know how to do the factory reset in Sirfdemo? The only real option I have is to "initialize source" which has a reset button that I click but I don't see any changes happening. I'll take another look on google to try to find out how to reset but if anyone knows please...

**Curiosity** · 05-25-2007, 11:43 AM

I think it's that "Initialize Data Source" which has factory reset selected, and then you hit the "Send" button.

**Sonicxtacy02** · 05-25-2007, 11:57 AM

good luck with that.. that fried my first bu-353

. never went back into nmea again.

**GiODi** · 05-25-2007, 12:19 PM

I think I may have fried my BU-353 by trying this as well. Sonicxtacy02.... you had to replace the unit?

**Nerd2** · 05-25-2007, 12:55 PM

sirfdemo is a tricky program to use - chances are your bu353 isn't fried, but that you switched back to nmea at the wrong baud, or something like that. Keep going, have a fiddle. This happened to me...

**Sonicxtacy02** · 05-25-2007, 01:06 PM

Originally Posted by GiODi

I think I may have fried my BU-353 by trying this as well. Sonicxtacy02.... you had to replace the unit?

Yes i had to replace the unit.

Originally Posted by Nerd2

sirfdemo is a tricky program to use - chances are your bu353 isn't fried, but that you switched back to nmea at the wrong baud, or something like that. Keep going, have a fiddle. This happened to me...

I tried every baud setting... it go to the point where it wouldnt even return to sirf mode.. so i sent it back. I dont mess with sirfdemo now unless its a very LAST resort.