i had a avn7000 installed in my 05 dodge 3500 diesel. the gps always is ahead of where i am, like its going faster then i am. anybody have this problrm before?
thanks
brian
Replies (4)
cplkittle on 11/3/2007 23:15:38
I'm not as familiar with the eclipse line as the Pioneer navigation, but most of them go through a 'learning' or calibration period (up to 1000 miles). Especially if they are using hybrid tracking (using speedsense and GPS).
I would give it a month or two and see if it slowly becomes more accurate. If you still have problems, contact the shop that installed it for you. The accuracy now days is down to around 7' of the antenna. Where is the GPS antenna located on your vehicle? It should be on top of the cab close to the center of the vehicle. And it should have solid metal for 3" in all directions under the antenna.
swez on 11/4/2007 04:29:15
Am using a Garmin GPS now for work and it does the same thing on occassion. It puts me in the "ballpark", but not the specific seat of given destination. (Close, but not precise and a little "Kentucky Windage is needed)
If we input a given address, it does get us to the general destination in an efficient manner. However, if I could figure out a way to land the exact coordinates and have the GPS track this factor in high resolution mode, it would save a few minor glitches.
In some cases, the addy is close enough. But in many cases, it's not precise enough. The delay factor from triangualation computations are not fast enough to avoid "over-shoots". (Back-tracking is an art here, but not an exact science for consumer Nav units) We can find the right Church OK, but not the exacxt pew we desire) Here, some need Degrees, Minutes, Seconds and Milli-seconds resolution ability.
Swez
cplkittle on 11/4/2007 12:12:59
Swez, the dfference between Garmin, Magellan, and Tom Tom compared to Pioneer and Eclipse is night and day. The indash models use 10 or 12 satellites instead of 3 or 4. Most of the new indash units also tap into the speed sense wire in the vehicle as well. This along with gyroscopic g-force sensors (pioneer has them) just add to the accuracy of the navigation.
I have a magellan window mount, and my co-worker has an AVIC-Z2. The difference is night and day! Remember the first cell phones? It's like comparing them to the iPhone!
swez on 11/4/2007 14:21:56
Am sure you are right on that one Kit. I do have a speed sensing mode when using the general map feature. But when I plug in a specific address, and store it for later recall, this Garmin gets me there well enough, but it does lag at times and I'll miss a turn in unfamilar areas.
Another annoying thing about this GPS unit, if one misses a turn, it will recalulate a new route that can take me well out of the way by a series of fresh calcs. I have learned to ignore them and just turn around and restart the route planning feature from a given point. That's the most efficient way I have learned so far, but it took a few long loop drives to understand the flaw in this specific unit.
Anyway, the unit did not cost me anything, is good at getting us out of traffic jams, road construction and onto back roads toward our destination points. The trick is know the area a little better and ignoring the constant attempts this unit uses to get us back into the logjam. Hehe.... it's a dumb unit when one knows the area well, but a time saver when we are in unfamiliar territory and have to make many stops along a pre-programmed route.
Yeah... GIGO is often the case here. Having updated data bases stored in this unit will help. But it's a windshield mounted unit and just a power cord to feed the batteries. All calcs are based on internal programming and triangulation algorithems inside the head piece. Not a bad unit, just quirky at times is all.
Swez
thanks
brian
Replies (4)
cplkittle on 11/3/2007 23:15:38
I'm not as familiar with the eclipse line as the Pioneer navigation, but most of them go through a 'learning' or calibration period (up to 1000 miles). Especially if they are using hybrid tracking (using speedsense and GPS).
I would give it a month or two and see if it slowly becomes more accurate. If you still have problems, contact the shop that installed it for you. The accuracy now days is down to around 7' of the antenna. Where is the GPS antenna located on your vehicle? It should be on top of the cab close to the center of the vehicle. And it should have solid metal for 3" in all directions under the antenna.
swez on 11/4/2007 04:29:15
Am using a Garmin GPS now for work and it does the same thing on occassion. It puts me in the "ballpark", but not the specific seat of given destination. (Close, but not precise and a little "Kentucky Windage is needed)
If we input a given address, it does get us to the general destination in an efficient manner. However, if I could figure out a way to land the exact coordinates and have the GPS track this factor in high resolution mode, it would save a few minor glitches.
In some cases, the addy is close enough. But in many cases, it's not precise enough. The delay factor from triangualation computations are not fast enough to avoid "over-shoots". (Back-tracking is an art here, but not an exact science for consumer Nav units) We can find the right Church OK, but not the exacxt pew we desire) Here, some need Degrees, Minutes, Seconds and Milli-seconds resolution ability.
Swez
cplkittle on 11/4/2007 12:12:59
Swez, the dfference between Garmin, Magellan, and Tom Tom compared to Pioneer and Eclipse is night and day. The indash models use 10 or 12 satellites instead of 3 or 4. Most of the new indash units also tap into the speed sense wire in the vehicle as well. This along with gyroscopic g-force sensors (pioneer has them) just add to the accuracy of the navigation.
I have a magellan window mount, and my co-worker has an AVIC-Z2. The difference is night and day! Remember the first cell phones? It's like comparing them to the iPhone!
swez on 11/4/2007 14:21:56
Am sure you are right on that one Kit. I do have a speed sensing mode when using the general map feature. But when I plug in a specific address, and store it for later recall, this Garmin gets me there well enough, but it does lag at times and I'll miss a turn in unfamilar areas.
Another annoying thing about this GPS unit, if one misses a turn, it will recalulate a new route that can take me well out of the way by a series of fresh calcs. I have learned to ignore them and just turn around and restart the route planning feature from a given point. That's the most efficient way I have learned so far, but it took a few long loop drives to understand the flaw in this specific unit.
Anyway, the unit did not cost me anything, is good at getting us out of traffic jams, road construction and onto back roads toward our destination points. The trick is know the area a little better and ignoring the constant attempts this unit uses to get us back into the logjam. Hehe.... it's a dumb unit when one knows the area well, but a time saver when we are in unfamiliar territory and have to make many stops along a pre-programmed route.
Yeah... GIGO is often the case here. Having updated data bases stored in this unit will help. But it's a windshield mounted unit and just a power cord to feed the batteries. All calcs are based on internal programming and triangulation algorithems inside the head piece. Not a bad unit, just quirky at times is all.
Swez
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