The preview of the DDD file from the tachograph memory allows you to quickly check what data is contained in the file downloaded from the vehicle's tachograph, without opening it in a separate programme.
Brief description
The video shows how to quickly analyse the contents of a DDD file downloaded from the vehicle tachograph memory. In the Tachograph module, select the "DDD from tacho memory" ("DDD z pamięci tacho") function, choose the vehicle from the list, and click the eye icon next to the downloaded file. The "Preview of DDD file from tachograph memory" ("Podgląd pliku DDD z pamięci tachografu") window opens, displaying basic information about the file, such as the vehicle, tachograph generation, file size, data range, date of download, and method of download. Below, you can see the file content sections, e.g. "Overview and identification" ("Przegląd i identyfikacja"), "Vehicle activities" ("Aktywności pojazdu"), "Events and faults" ("Zdarzenia i usterki"), "Detailed speed" ("Prędkość szczegółowa"), and "Technical data and calibrations" ("Dane techniczne i kalibracje"), each of which can be expanded for details.
When to use this function
This function is used when you want to quickly check what has actually been downloaded from the tachograph memory into the system. It is useful for a fleet manager or the person responsible for working time settlements, when it is necessary to ensure that the DDD file covers the correct period, contains the required data sections, and to preview information about vehicle activities, events, faults, or tachograph calibration.
How to view the contents of a DDD file from the tachograph memory
- Go to the Tachograph module.
- Click the "DDD from tacho memory" ("DDD z pamięci tacho") tile.
- Select the vehicle from the list on the left.
- Find the DDD file you wish to check in the list of downloaded files.
- Click the eye icon next to the file name.
- Check the basic information about the file in the "Preview of DDD file from tachograph memory" ("Podgląd pliku DDD z pamięci tachografu") window.
- Click "Show details" ("Pokaż szczegóły") next to the chosen section in the "File content" ("Zawartość pliku") area.
- Review the details saved in the tachograph memory.
What can be checked in the DDD file preview
- vehicle and registration number
- tachograph generation
- file size
- data range (Data from, Data to)
- date of download and method of file download
- number of recognised sections
- SHA-256 checksum
- the "Overview and identification" ("Przegląd i identyfikacja") section, including VIN, tachograph time, previous and last downloads, company locks and inspections
- the "Vehicle activities" ("Aktywności pojazdu") section, including days of activity, driver card insertions and removals, and places of work
- the "Events and faults" ("Zdarzenia i usterki"), "Detailed speed" ("Prędkość szczegółowa"), and "Technical data and calibrations" ("Dane techniczne i kalibracje") sections
Additional features
- you can narrow the list of files by setting a date range in "View parameters" ("Parametry widoku")
- you can display files for all vehicles using the "Show files for all vehicles" ("Pokaż pliki wszystkich pojazdów") button
- you can check how the file was downloaded (e.g. Manually)
- you can expand and collapse section details using the "Show details" ("Pokaż szczegóły") and "Hide details" ("Ukryj szczegóły") buttons
- you can immediately see which sections are missing from the file
- you can quickly analyse the file without additional software
Frequently asked questions
How to check the contents of a DDD file from the vehicle tachograph?
In the Tachograph module, click "DDD from tacho memory" ("DDD z pamięci tacho"), select the vehicle, and click the eye icon next to the downloaded file. A preview will open with information about the file and its sections.
Where can I find DDD files downloaded from the tachograph memory?
In the list under the "DDD from tacho memory" ("DDD z pamięci tacho") function, after selecting the vehicle. The list shows the date of download, data range, method of download, and file name.
What data can be seen in the DDD file preview?
You can see, among others, the vehicle, tachograph generation, file size, data range, as well as sections such as "Overview and identification" ("Przegląd i identyfikacja"), "Vehicle activities" ("Aktywności pojazdu"), "Events and faults" ("Zdarzenia i usterki"), "Detailed speed" ("Prędkość szczegółowa"), and "Technical data and calibrations" ("Dane techniczne i kalibracje").
How do I know if a section is missing from the DDD file?
The preview shows the number of recognised sections, and for each section, information on whether it is present in the file or not found.
Does the preview verify the digital signatures of the DDD file?
No, this is a structural reading of the file showing data groups. According to the message in the programme, digital signatures are not yet cryptographically verified.
Video transcript
Analysis of the contents of a DDD file downloaded from the tachograph memory. We click "DDD from tacho memory" ("DDD z pamięci tacho"), select the vehicle, and here we have the visible file that was downloaded from the tachograph.
By clicking the eye icon, we can view it – exactly what is inside – and also see the details that are saved here in the tachograph memory. This is very helpful for a quick analysis of what has been downloaded into our system.