Tomtom 5 20 seconds behind?

Rickrst · Occasional Visitor Joined: Nov 06, 2003 Posts: 12

ive got a tosh e740, and have had no problems with tomtom 2 or 3 using original tomtom bluetooth gps receiver.

Ive recently been given another e740 with tt5 on it. I noticed that the map/plotting is quicker in version 5.

Problem is, when i start driving, it's about 20 seconds behind me. It'll show me passing a road, which ive passed 20 seconds ish ago. When i come to a stop, it carries on going until it eventually reaches my position.

Any ideas?

Rick.

lbendlin · Posted: Tue Oct 25, 2005 5:59 am Post subject:

XTrac mode enabled on the GPS receiver...
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Lutz

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Rickrst · Occasional Visitor Joined: Nov 06, 2003 Posts: 12

Okay, humour me - whats xtrac and what do i need to do with it?

Rick.

lbendlin · Posted: Tue Oct 25, 2005 7:34 pm Post subject:

it's a mathematical trick of SiRF II chipsets to smoothen out position changes and to utilize weaker signals. It's now obsolete with SiRF III.

If you can , switch it off on your receiver.
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Lutz

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Rickrst · Occasional Visitor Joined: Nov 06, 2003 Posts: 12

Can this be switched off on the original TomTom BT reciever?

lbendlin · Posted: Wed Nov 16, 2005 7:54 pm Post subject:

I believe so - try to use SirfDemo on a PC
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Lutz

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