The data in rangefinder is normal but terrain failsafe happened

Hello.

The data in rangefinder is normal,

rangefinder in rc8 option is high, and terrain data failsafe issued.

Which ones should you investigate further?

Thank you

After some thought and log analysis, I found the cause.
I enabled the use of terrain altitude when flying in auto mode, but the altitude of the location where the auto mode starts is higher than the maximum detection range of the radar, so the terrain cannot be referenced at startup, which triggers the failsafe.

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