NOYAFA NF-8108 - Manual (Page 14)

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Continue?
No yes
At the moment, push key (No) to exit calibration function. Push key
(Yes) to repeat the measurement.
Note: If the tester is restarted , the tester will recover the standard
calibration factor of Class UTP5 cable as the value set before .
At the moment, push key (No) to exit calibration function. Push key
(Yes) to repeat the measurement.
Your excellent helper in cable test! 11