OSTC Mk.2, 2N and 2C :  heinrichs weikamp forum The fastest message board... ever.
Legacy OSTC's 
compass - must calibration very often
Date: September 22, 2018 07:47PM

I have both a OSTC3 and OSTC2. I use one on each arm. After I have updated to new software 2.97 and also before then the compass on my OSTC3 was much more reliable. Now I have to calibrate the compass almost each time before my dive. I also purchased a new OSTC2 this year and this one is even more unreliable. It is kind of annoying that one has to calibrate the compass so often.
I keep my computers in a pelican case and there is not so much else here apart from my talcum orings and Gopro camera in its house.

I know the scooter can have an effect as well as the torch but the computers are not showing the right course even on land before the dive takes place, meaning I am now have to do the calibration almost - if not before every dive.

Both batteries show good power on OSTC 2 and OSCT3. On OSCT3 i use a 1.5 volt battery nikel cadium battery.

Are there any ideas what can cause this issue ?

Bst rgds Thomas Nilsson, Norway

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