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) (c. 799)

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ANNEX I C U.K. Requirements for construction, testing, installation, and inspection

Appendix 2

TACHOGRAPH CARDS SPECIFICATION U.K.

3. HARDWARE AND COMMUNICATION U.K.

3.2. Transmission Protocol U.K.

3.2.2 ATR U.K.

TCS_17 The device checks ATR bytes, according to ISO/IEC 7816-3. No verification shall be done on ATR Historical Characters. U.K.

Example of Basic Biprotocol ATR according to ISO/IEC 7816-3

Character	Value	Remarks
TS	‘3Bh’	Indicates direct convention.
T0	‘85h’	TD1 present; 5 historical bytes are presents.
TD1	‘80h’	TD2 present; T=0 to be used
TD2	‘11h’	TA3 present; T=1 to be used
TA3	‘XXh’ (at least ‘F0h’)	Information Field Size Card ( IFSC)
TH1 to TH5	‘XXh’	Historical characters
TCK	‘XXh’	Check Character (exclusive OR)

TCS_18 After the Answer To Reset (ATR), the Master File (MF) is implicitly selected and becomes the Current Directory. U.K.