I knew something was wrong when the autolaps were quite a bit different from each other.
With the new gps algorithm, with GLONASS enabled, and with firmware v1.6.14, I re-did my standard GPS test for the Spartan Ultra and the Spartan Sport
I followed this methodology and this precise, standard route: http://the5krunner.com/courses/test-route-for-gps-devices/. That link also has all the source files there NOW if you want to verify things or just be a bit nosey 🙂 All previous test results are there too.
Analyse away !!
For good measure I also re-did my TomTom Adventurer test from before Christmas. The last time was a total failure as I could not get the file from the device. The results SHOULD be the same as for the TomTom Runner 3/Spark 3 which previously scored very highly. I also had the 920XT for good measure (albeit in a waist belt)
I’ve not had a chance yet to analyse these results in detail as it takes a few hours. I also have to analyse some from a couple of weeks ago too. I should have that for a post next week when I will give a TOP 10 GPS accuracy list. I will also link to results from other sites who have different methodologies and results – in the sake of balance.
However I had a quick glance at the two SPARTANs. Note they were properly and fully ‘warmed up’. But as you can see from the image above there is something wrong with the ULTRA. The section shown, as well as the rest of the track, looks very good for the SPORT. Other parts of the track show the ULTRA to be WAY out too. The ULTRA actually seems WORSE than before the firmware update.
This, sort of, supports my earlier tests from several months ago on the same units. Bizarrely, then, I found the SPORT to be VERY GOOD…one of the best. And yes I appreciate no-one believed me…the files are there. But the ULTRA, even then, was not great.
So the GOOD and BAD results for the respective devices appear superficially to have carried through to the new GPS algorithm and when GLONASS is enabled. I’ll verify that over the coming days by looking at the files more closely.
My conclusion is that there is something wrong with my ULTRA.
And this leads to an uncomfortable conclusion that there may be more than one.
On a positive note, referring to the SPORT, the SPARTAN clearly has the capability to be GOOD.
FYI: Both SPARTANs, I believe, use the CSRG0530 (SiRFstarV) chip.