2.9 Calibrating the TDC

You can backup or restore the calibration from a previous backup using FirmwareGUI_64.exe (see Performing a firmware update and Figure 2.18).

In the “Calibration” section, click “Backup” and choose a location for the .ndigo6gcal calibration file.

You can compare the currently used calibration with the calibration from a backup file by clicking “Verify” button after browsing to your calibration file.

You can flash the calibration from a *.ndigo6gcal file onto the Ndigo6G-12 by clicking “Flash” after browsing to your calibration file.

Attention

After performing a firmware update, it is always necessary to re-calibrate your Ndigo6G-12. Restoring a previous calibration from a backup is not sufficient.

2.9.1 Re-calibrating the Ndigo6G-12

Calibration is performed with the command-line tool ndigo6g12_tdc_alignment.exe. It is located in the installation directory of the Ndigo6G-12 driver under apps\x64 (by default C:\Program Files\cronologic\Ndigo6G-12\apps\x64).

Navigate to the folder and open it in a terminal, then start the tool from that terminal.

The tool takes command line arguments. Run .\ndigo6g12_tdc_alignment.exe -help for an overview.

Calibration is performed by simply starting the tool: .\ndigo6g12_tdc_alignment.exe.

If multiple Ndigo6G-12 are installed in your system, you can perform calibration for each one of them by calling .\ndigo6g12_tdc_alignment.exe -index <device_index>, where the <device_index> starts at 0 and increments for each Ndigo6G-12.