Hitron HCB-F9 Instruction Manual page 54

<BLC>
Press the MENU button to access the "BLC" mode.
Prevents such a back light effect to secure a clear image under all illumination
environments.
1) LEVEL
HIGH / MIDDLE / LOW / OFF
2) END
RETURN to MAIN MENU.
BLC
LEVEL
HIGH / MIDDLE / LOW / OFF
END
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