click to expand/collapseDigital tachograph

 The vehicle data files contain two certificates, which validity is checked upon each download.

 The check is performed by computing the checksums for the data files downloaded from the driver’s card (or saved onto the hard drive) and comparing them with the checksums computed by the tachograph processor.

Repeat the download from the tachograph when one of the signatures is invalid.

Download files with invalid signatures are useless even if saved onto the hard disc!!!

 

 After that an information to the signature validity will appear in the field below:

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 Explanation to particular sections:

•Overview - information concerning tachograph identification,

•Activities - driver activities of a specified date (driving, rest, etc.),

•Events and faults - information about registered events and faults (card withdrawal, current supply interruption, etc.),

•Speed - details about speed,

•Technical data - technical data about the tachograph,

•No data - no data entry on the selected day,

•no activities - the selected day was blocked with a foreign card of a company,

•Effective date - only for smart tachographs readouts