How to calculate jitter from raw data returned by Nexperia-based drive?


#1

Hi.

I’m interested in how CDSpeed calculates jitter value from what the drive reports.
So I captured the data sent and received. Below is a sample data returned by the drive.

Data received:
00000000 00 64 76 64 03 53 53 26 06 E0 00 FF 00 F5 00 76 .dvd.SS&.?.?v
00000010 00 38 00 22 00 14 00 31 00 34 00 61 00 22 00 29 .8."…1.4.a.".)
00000020 00 14 00 09 00 06 00 03 00 00 00 00 00 00 00 00 …
00000030 00 00 00 00 00 00 00 00 00 01 08 01 81 00 …?

My guess is the last two hex values, 01 81, represent jitter value. But how could I convert them to percentage? I’m really confused.