Wuhan Guide GUIDIR IR529, User Manual

User Manual

17

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 Sta.

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OK: Indicate the positioning has succeeded. Now a compass icon is displayed at the right 

bottom corner of the live image. In the compass,   

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The upper vertex of the vertical diameter on the circle is the North;   

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The radius rotating clockwise from the North indicates the current horizontal direction;   

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The angle between the North and the radius is the direction angle, with degrees 

recorded in sub-option Ori.       

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  Press button M to toggle between sub-options Exit, Calibration and Offset.   

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  Select sub-option Exit and then press  or – to exit the sub menu 

Calibration: 

Calibration is also called as Hard Iron Calibration. When the hard iron environment or the position 

varies greatly, the original magnetic environment of the digital compass will change accordingly, 

leading to inaccurate direction information. To offset the impact of the magnetic environment 

change, it is necessary to perform hard iron calibration.   

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  Press button M to select sub-option Calibration, then release the button M 

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  Keep button – depressed and press button M, then sub-option Calibration changes to 

sub-option Stop and a prompt Start appears in the live image.   

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  After the prompt disappears in 1 second, rotate the camera (i.e. the compass) for 360 degrees 

at a uniform speed. The speed can be consistent with the speed of the radius in the compass 

icon. Or one circle shall costs 1 minute at least.   

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  After rotation, keep depressed and press button M to end calibration. Now the 

sub-option Stop changes to sub-option Calibration and a prompt Finish appears in the live 

image 

Exit Calibration 

Direction 

angle 

Status 

North 

calibration