Whats with the high jitter?

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#1

i have read up on jitter and seem to understand what causes it. however i dont understand why i get such higher numbers at the beginning of my burns. the pie and pif are so good. its not just this scan, its all my yuden t02 scans. i know under 15% is ok, but come on. :bigsmile:

imgburn 2400, smartburn only, , 20A1P KLON official, 8x burn, 4x scan.

#2

The high jitter at the beginning could be caused by the increasing burn speed at the beginning of the disc (P-CAV) and when a constant 8x speed is reached, the jitter falls.

You could test this theory by burning at 6x in the same drive which will be a constant linear speed on the whole disc.

#3

Agreed with Drage.

Also, do media other than T02 show this similar behavior or do you have some media that don’t have high jitter at the start?

#4

thanks for your replies. :slight_smile:

i will do a 6x burn and post burn and scan graphs.

#5

here is a 6x burn with imgburn saved with dvdinfo pro and a cdspeed 4x scan.

6x_imgburn_beemovie.png753×566 61.6 KB

6x_imgburn_beemovie_scan.png645×528 18.6 KB

#6

i have ritek f1, sony d21, and mcc004 scans which dont show this jitter. however most were either burned with benq or klon eohtIII firmware.

ritekf1 - constant 9’s

sony d21 - ranges from 8’s to high 9’s

mcc004 - mostly all in the 8’s a few mid to high 7’s

edit// i guess this drive/firmware/mid just dont like 6x.

might try playing around with different firmwares to see the effect. but i just really like the pie, pifs of this combo.

i get better results from MCC 004 with Benq DW2000 9B3E.stock firmware at 6x.