If you want to give it a go by yourself, you can use our calibration software ‘t3kcfgfe’.
In the link below you fill find the software as well as instructions. When running the t3kcfgfe.exe software it may prompt to upgrade your CommBox firmware, if it does, please allow it.
Calibration software: https://commbox.com.au/content/downloads/support/winapps/T3K.zip
If you get stuck, feel free to contact our support team by logging a ticket or giving us a call on +61 2 9975 6001