NVS2825 calculates the CRC(Cyclic Redundancy Check) code for each file(except hidden file) during the memory card copy and stores it to the LOG file. Users can use “NextoDI CRC Checeker” program provided by NextoDI to check if the video file is changed from its original copy or not.
Before using "NextoDI CRC Checker"
"NextoDI CRC Checker" is provided with the firmware V1.30. It is execution program which works at Windows computers only(not for MAC or Linux) and does not need installation, but needs Microsoft [.Net Framework 4] installed in the computer. [.Net Framework 4] is default installed from Windows 8. Most of Windows versions may have already installed it during installation of other software. If it is not installed, users may see following error message on the computer.
Using "NextoDI CRC Checker"
Double click the downloaded execution file to run the program.
Click the [...] button to select a file for CRC calculation.
Click the [Start check] button to start calculation.
You can see the calculated CRC value in [CRC Code] window as below.
Checking the original CRC value calculated during the copy.
You can find the original CRC code calculated by NVS2825 during the memory card copy here.
NVS2825 generates upto 99 LOG files with maximum 1MB file size.
Latest LOG file number is indicated by “CurrentLogIs.XXX” file. This XXX indicates the XX of NextoLogXX.txt
If you open up the text file, you can see the calculated CRC code during memory card copy.
If the CRC code generated by “NextoDI CRC Checker” and the value in LOG file is the same, that means the file is the same one as an original one from memory card.