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tbwonder said..
I used a different browser and then could see the new setting to choose 1,2, 5 or 10Hz.
I did a stationary test at 5 Hz and 10 Hz and compared the results to my M8Logger.
The Motion appears to log a maximum of 18 satellites in both settings. The results were very good on both settings with my logger only giving marginally lower errors when it was tracking 25 satellites. It should be noted the old version of firmware also looked very good.
If I had two Mini Motions it would be interesting to try 5 and 10 Hz at the same time and compare the results ideally on the water.
The thing I liked about the Mini Motion was that there were no settings. So it was impossible for a user to stuff it up.
I guess the questions that people are going to ask are:
1. Do I need to update my firmware as it appears to have been working well for years.
2. Of the four new settings which ones are approved for posting to GPSTC?
3. Which one is likely to give the best results?
The GPSTC website says that the Motion devices must be used at 5 or 10 Hz so I guess that answers question 2.
I have my own thoughts on Question 3. But I would be interested to hear what Julien and the GPSTC admin have to say.
1. No. The device was tested and approved with the older firmware and performed at least as well as is required. The 'issues' that have been described recently are extremely rare, and even in the very unlikely event that they do occur in posted data, (No instances have been found or reported) it is very unlikely to have any material effect on the results.
2. The Mini Motion Logger is only currently approved for posting on GPSTC @ 10Hz. It is very likely that it can be approved @ 5Hz in the future (as the LCD Motion is). It probably will
not be approved at lower than 5Hz in line with the LDC Motion and other Ublox M8 based GNSS devices.
3. Define 'best results'?
If you mean, which is likely to find the fastest section of a 2 second or 10 second speed run, that is most certainly running @ 10Hz.
If you mean which is likely to be the most accurate, I would say it is @10Hz, but that will need to be investigated in more detail.
In either case, the difference is likely to be
completely insignificant for our practical purposes.
I have two identical Mini Motions and will be testing the different parameters and settings in the new firmware ASAP and reporting the results to the GPSTC Administrative Advisory Panel.