the SiRF’s high performance SiRF Star III chipset
Sat, 12/08/2007 - 12:01pm
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 16 years
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Could somebody enlighten me as to what this is??
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16 years
|
Could somebody enlighten me as to what this is??
Evertyhing you wanted to know and more...
Check out this page and its tons of informative links.
http://en.wikipedia.org/wiki/SiRFstar_III
SiRFstarIII is the latest high sensitivity GPS microcontroller chip manufactured by SiRF Technology. GPS microcontroller chips are usually found within GPS receivers and are responsible for interpreting signals from GPS satellites and deriving a position, based on the time it takes radio waves to travel from the satellites to the location of the chip.
Features
SiRFstar III receiver and integrated antenna from UK company Antenova. This measures just 49 x 9 x 4mm.The SiRFstarIII chip is distinguished from earlier SiRF chips and from GPS chipsets made by other manufacturers (Garmin or Trimble Inc for example), largely due to its faster Time to First Fix (TTFF) and its ability to acquire and maintain a signal lock in urban or densely covered forest environments. The enhanced abilities of the SiRFstarIII chips are made possible by several features:
* The chip supports 20 parallel channels, meaning that the chip can listen to, or search for, the signals from 20 different GPS satellites simultaneously. However, the current GPS system typically peaks at 12 satellites visible from one location plus a maximum of four WAAS satellites.
* The chip consumes somewhat more power than SIRFstar II.
* The chip can also make use of Assisted GPS to reduce the time needed to calculate its location. This feature makes the chip useful for cell phone manufacturers who want or need to support location services (such as the E911 legislation in the United States).
Reviewers have praised the SiRFstarIII chipset for its superior sensitivity and tracking capabilities. GPS receivers based on this chipset have routinely performed better than receivers based on other chipsets.
nüvi 680, nüvi 770, Garmin Mobile XT, etc...
I found this for you...
Wow! Now I sort of understand what it is and am further wondering if this chipset is in the Garmin GPSr and if it is, how do I check to see which vervion is installed in my nuvi 370? Thanx dcoffing!
Sandman --------Nuvi 370
It seems that Garmin doesn't
It seems that Garmin doesn't make it easy for you to find which hardware is actually installed. It could be since they use someone else's superior chipset
I would send you over to the Reviews section at www.gpsmagazine.com and then look into the Specifications section of the review but I didn't see a review for the 370. I see the one for the nuvi 350 is the SiRF StarIII so I would assume it is for your model too?
nüvi 680, nüvi 770, Garmin Mobile XT, etc...
Nuvi 3** & 6**
I believe are all SiRF StarIII...the 2** & 7** - you'd have to look close at the screen while it's booting and look for a copyright line for SiRF to be sure what you have....or look on the unit for the "about" screen with all the copyrights listed.
*Keith* MacBook Pro *wifi iPad(2012) w/BadElf GPS & iPhone6 + Navigon*
Making Sense of Garmin's nuvi Product Line
Wow! Now I sort of understand what it is and am further wondering if this chipset is in the Garmin GPSr and if it is, how do I check to see which vervion is installed in my nuvi 370? Thanx dcoffing!
Found this helpful piece below on Making Sense of Garmin's nuvi Product Line and indeed you have the SiRF chipset. According to the author Garmin may be changing the receiver though at their discretion.
http://www.gpsmagazine.com/2007/04/garmin_nuvi_250_indepth_r...
nüvi 680, nüvi 770, Garmin Mobile XT, etc...
the SiRF’s high performance SiRF Star III chipset
Thanks again to everyone who helped me with this one. After looking into the articles, etc., I have verified that the 370 has the SiRF Star III chipset. Really appreciate all the help and advice. This is one heck of a great forum with a wealth of knowledge displayed by it's members/users.
Kudos to Miss POI and John for developing this site and maintaining it's high quality and user friendliness.
Sandman --------Nuvi 370
I can see SiRF, but...
I believe are all SiRF StarIII...the 2** & 7** - you'd have to look close at the screen while it's booting and look for a copyright line for SiRF to be sure what you have....or look on the unit for the "about" screen with all the copyrights listed.
On my 650, neither the start-up screen nor the “About” page indicates anything about what SiRF Star chip version it uses, simply that it uses the technology. Someone else on this forum told me that it uses the SiRF Star III chip and I remember being convinced that the authority they sited seemed credible. But I can't find reference to it anywhere on the 650 itself.
--- GPSmap 60CS, Nuvi 650 & Nuvi 1490T---
660 Says the same
My 660 also says it uses the technology. But not that it is II or III.
Rodney.. oditius.htc@gmail.com BMW Zumo 550 HTC Touch Pro - Garmin XT
From Garmin
Regarding my nuvi 750 I received the following information from a Garmin support individual:
The chipsets in our units do support WAAS/EGNOS. These may not necessarily be SiRF chipsets, but if they are a different manufacturer, they are held up to the same operational guidelines and requirements as the SiRF chipsets. The only difference between these chipsets is in the manufacturer and not in the functionality or supported features.
From Garmin
Regarding my nuvi 750 I received the following information from a Garmin support individual:
The chipsets in our units do support WAAS/EGNOS. These may not necessarily be SiRF chipsets, but if they are a different manufacturer, they are held up to the same operational guidelines and requirements as the SiRF chipsets. The only difference between these chipsets is in the manufacturer and not in the functionality or supported features.
The "default" setting on the nuvi is setting WAAS/EGNOS to off. Although turning the WAAS/EGNOS setting to on improves the accuracy of the nuvi it also is a larger drain on the battery. Guess we have a decision on that one.
Sandman --------Nuvi 370
Not all of them...
The "default" setting on the nuvi is setting WAAS/EGNOS to off. Although turning the WAAS/EGNOS setting to on improves the accuracy of the nuvi it also is a larger drain on the battery. Guess we have a decision on that one.
The newer models (including the 750) do not have a setting to enable/disable WAAS. In fact there is some debate as to whether they even have it. Garmin claims they do have it and it's locked in the enabled state. End users claim the units don't have it. *shrug* It's very confusing.
Another thread
As I said in another threat, When I go to the sattelite screen I never see a satellite number above 32. The two waas satellites over the US are #35 and #47. My only guess, if the 750 really does waas is that they are masking it on that screen. I always see the waas satellite in my 60CSx.
Garmin Etrex Vista, Streetpilot 2610, GPSMap 60Csx, Nüvi 750, Colorado 400t, Nüvi 3790t
Not all of them...
The "default" setting on the nuvi is setting WAAS/EGNOS to off. Although turning the WAAS/EGNOS setting to on improves the accuracy of the nuvi it also is a larger drain on the battery. Guess we have a decision on that one.
The newer models (including the 750) do not have a setting to enable/disable WAAS. In fact there is some debate as to whether they even have it. Garmin claims they do have it and it's locked in the enabled state. End users claim the units don't have it. *shrug* It's very confusing.
From what I read on the following thread, I am not too sure it is real important anyway unless
http://www.poi-factory.com/node/7957
Sandman --------Nuvi 370
Not all of them...
The "default" setting on the nuvi is setting WAAS/EGNOS to off. Although turning the WAAS/EGNOS setting to on improves the accuracy of the nuvi it also is a larger drain on the battery. Guess we have a decision on that one.
The newer models (including the 750) do not have a setting to enable/disable WAAS. In fact there is some debate as to whether they even have it. Garmin claims they do have it and it's locked in the enabled state. End users claim the units don't have it. *shrug* It's very confusing.
From what I read on the following thread, I am not too sure it is real important anyway unless it is using up the battery unnecessarily.
http://www.poi-factory.com/node/7957
Sandman --------Nuvi 370
Sirf
Honestly, for a car receiver it really doesn't. I just went to the SiRF website and the chipset does indeed "support" WAAS, it's just a question of whether Garmin set up the unit to use it.
Garmin Etrex Vista, Streetpilot 2610, GPSMap 60Csx, Nüvi 750, Colorado 400t, Nüvi 3790t
Chipset -
A quote from GPS Magazine on the Nuvi 660 Specs:
"GPS Receiver: SiRF Star III high-sensitivity GPS receiver"
Found at: http://www.gpsmagazine.com/2006/10/garmin_nuvi_660_indepth_r...
The nüvi 2xx don't have a satellite screen
The nüvi 2xx don't have a satellite screen or an option to enable/disable WAAS, so I don't know what the status is.
><> Glenn <>< Garmin nüvi 2598
WAAS
Why wouldn't WAAS be a good thing? If it's plugged into the car power, I wouldn't think the extra battery use would make a difference...