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New firmware for Liteon 48246S

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New firmware for Liteon 48246S

Postby Nico Wico on Tue Mar 25, 2003 6:31 am

Firmware "match more media"
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Postby Spazmogen on Tue Mar 25, 2003 11:28 pm

Thanks!

I jst checked and there's yet another firmware for the LTR-52246S too: http://www.liteonit.com.tw/webfw/LTR-52246S/R526S0D.zip

6S0D


As usual, I've just downloaded it, I'll report back later.
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Postby MediumRare on Thu Mar 27, 2003 3:42 am

I tried out SS0C with the 700 Mib Verbatim Ultraspeed CD-RWs. I found absolutley no difference in performance- in speed or quality- from SS0B and went back to SS0B.

It may bring improvements with CDRs, but SS0B is fine with all media I have.

G
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Postby cfitz on Thu Mar 27, 2003 11:39 am

MediumRare wrote:I tried out SS0C with the 700 Mib Verbatim Ultraspeed CD-RWs. I found absolutley no difference in performance- in speed or quality- from SS0B and went back to SS0B.

It may bring improvements with CDRs, but SS0B is fine with all media I have.

Did you go back in order to avoid having to re-qualify all your preferred media with the new firmware (i.e. stick with what is known to be good), or did you actually find something in the new firmware that looked bad?

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Postby MediumRare on Thu Mar 27, 2003 4:41 pm

cfitz wrote:Did you go back in order to avoid having to re-qualify all your preferred media with the new firmware (i.e. stick with what is known to be good), or did you actually find something in the new firmware that looked bad?

cfitz

It's more the first case: I have no issue with SS0C- actually its mostly inertia. :D Let me elaborate a bit (and I found out something very interesting while preparing this post!).

I decided to test the 700 MiB Verbatim UltraSpeed RWs mainly to emphasize that they do exist. 8) However, the results differed considerably from those I posted in the Media Compatibility Thread for the virgin disk :o . I repeated the burn again and essentially confirmed the newer results. The point is that there are 2 variables here: the firmware and a "first time" effect. E.g. I had been able to write to the virgin Intenso/NanYa RWs at 16x, but never again without errors. So I went back to SS0B to cross check this (and stayed with it).

The effect is a first-time effect. The SS0B burn looked pretty well the same as with SS0C. Here a summary, all burned with LTR48246S, scans at max. speed:

Verbatim UltraSpeed RW 80 min / 700 MiB, @24x, virgin disk, SS0B:
Image

Verbatim UltraSpeed RW 80 min / 700 MiB, @24x, erase/write cycle 2, SS0C (no significant difference with SS0B):
Image

This looks much like the UltraSpeed 74 min / 650 MiB, @24x, cycle unknown, SS0B:
Image

In all cases the C1 rate has a minimum at 40-48 min (ca. 20x speed) and then grows exponentially. 16x speed is reached at about the 20 min. mark.

Now here is a burn @16x CLV, SS0B:
Image

The C1-rate is roughly constant at the 20 min. value indicated in the 24x CAV burn!! It would be really interesting to have 20x CLV available- that seems to be the optimum write speed for this media as far as C1-rate is concerned. :D

G
Last edited by MediumRare on Thu Mar 27, 2003 5:04 pm, edited 1 time in total.
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Postby cfitz on Thu Mar 27, 2003 4:50 pm

Okay. Thanks for the report, MediumRare. It is informative and thorough, as yours always are. :)

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