# Commission Implementing Regulation (EU) 2016/799 of 18 March 2016 implementing Regulation (EU) No 165/2014 of the European Parliament and of the Council laying down the requirements for the construction, testing, installation, operation and repair of tachographs and their components (Text with EEA relevance), Division (89): The recording equipment shall detect faults through self-tests and built-in-tests, according to the following table:

Extent: E+W+S+N.I.

Sub-assembly to test
Self-test
Built-in-test
Software
Integrity
Data memory
Access
Access, data integrity
Card interface devices
Access
Access
Keyboard
Manual check
Printer
(up to manufacturer)
Printout
Display
Visual check
Downloading
(performed only during downloading)
Proper operation
Sensor
Proper operation
Proper operation
Remote communication facility
Proper operation
Proper operation
GNSS facility
Proper operation
Proper operation
ITS interface (optional)
Proper operation

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Source: https://www.legislation.gov.uk/eur/2016/799/annex/1/division/3/division/3.10/division/89 (the official version)
Page: https://openlegislation.uk/eu-regulation-2016-799/annex-1/division-3/division-3.10/division-89
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.