Re: Question about DistoX calibration

[Marco Corvi]

On Fri, Sep 5, 2025, 09:45 Jordi frances <jord...@gmail.com> wrote:

Hello Marco, I am writing this email to ask you about calibrating the DistoX-310.
I could not find the answer in the topodroid manual

from the manual:

"After a computation of the calibration coefficients, the dialog has a button to write the coefficients to the DistoX.
A warning is given if the data direction distribution is below 95%, or the calibration average error is above 0.5°."

I have calibrated two DistoX, one of which has the plate manufactured by Beat Heeb mounted on it, this topodroid does not give any error message.

The one I have a problem with is the DistoX that has the plate manufactured in China mounted on it, which when sending the calibration result, gives me a message that says that the coverage angle is below 95%.

I do not know what to do to solve this error that I am giving

the manual says "warning", not "error"

When calibrating the devices I do exactly the same thing and in the same place

Could you help me solve this problem

take more data.

Many thanks

Jordi

[Balambér Hakapesz]

There are usually several problems with the calibration of electronic mapping instruments:

1 incorrect calibration due to location or method - this is unlikely now
2 faulty instrument
2a bad sensor: can be decided based on the raw calibration data (MxMyMzGxGyGz)
2b the sensors are good, but there is a magnet in the instrument body - indicated by a constant error in the direction distribution
2b1 the magnet of the end piece is left inside - it must be removed
2b2 one of the components is magnetized
2b2a the magnetization is so great that the magnetic sensors run out of the measuring range - you must try to find the magnetized component and demagnetize it
2b2b the sensors measure normally, only the direction distribution is not nice - the instrument can be used (pictures)

Balázs

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