PX-712A Quality, Q-Check Scans

by **aviationwiz** on Sat Jun 05, 2004 12:32 am

The moment you have all been waiting for, when I take a look at the Q-Check scans on the PX-712A. For maximum reliability, I used the SUM8 Test, which uses ECC 8, as that seems to be the most accurate, and matches the standards, the other 2 tests, SUM1 & Basic, seem like useless garbage. Also, from what I understand, Q-Check uses 2x speed for scanning.

Ritek G04 Tests

First I'll take a look at a Ritek G04 4x DVD-R burned at 4x on the PX-712A at 4x with firmware 1.00, tested on firmware 1.02:

And the same disc being read back on the SOHD-167T in KProbe:

The scans on the SOHD-167T may be unreliable, as may any scan, but so far, the facts show that the PX-712A is a much more reliable tester, so we should use those scans to show us the most about the disc, or the drive.

Next is a Ritek G04 4x DVD-R, burned again in the PX-712A with firmware 1.00 at 4x, tested in the PX-712A with firmware 1.02:

and again in the SOHD-167T:

Next is a Ritek G04 4x DVD-R, burned in the PX-712A with this time 1.02 firmware at 4x, and read back in the PX-712A with 1.02 firmware:

and again in the SOHD-167T:

by **aviationwiz** on Sat Jun 05, 2004 12:34 am

Next on our list to scan is a Fujifilm 4x DVD+R, with media ID: RICOHJPNR01, this disc is Made in Taiwan, and should be manufactured by Ritek.

This was burned at 8x with firmware 1.02 in the PX-712A, and is only being tested in the PX-712A with firmware 1.02:

by **dolphinius_rex** on Sat Jun 05, 2004 12:47 am

Interesting to say the least! I would have liked to have seen the test results of the DVDRs being read at max speed in the 167t, since that is what seemed to be the most accurate on CDRinfo's test comparisons, but that is still assuming that your drive and theirs perform the same... which is somewhat unlikely I think.

Thanks for the info!!

by **Ian** on Sat Jun 05, 2004 11:53 am

Yeah, the PlexTools and KProbe scans vary A LOT. You should see some of the test results I've gotten.

Then again, it really isn't too surprising. Different test software, different drives. It was a similar situation when testing for C1/C2 errors with WSES and PlexTools back in the day.

I like PlexTools. I just don't like how it only reads at 2x. For someone that tests a lot of discs, it takes way too long.

by **aviationwiz** on Sat Jun 05, 2004 12:33 pm

Here are the 3 Ritek G04 discs tested above tested at full speed in the SOHD-167T:

Disc 1:

Disc 2:

Disc 3:

by **dolphinius_rex** on Sat Jun 05, 2004 12:45 pm

Wow! talk about "ask and you shall receive" !! Thanks

by **shimman** on Sat Jun 05, 2004 1:59 pm

here is a review written in japanese. one thing about this review is that umdoctor2, plextools, k's probe were used to compare values. for k's probe, more than one drives are used...i think 3 to test; all showed similar #s & shapes.

http://homepage2.nifty.com/yss/px712/en712a.htm
(review on the export only unit--->what north americans are getting) according to him japanese domestic version did not inlcude any media nor ide cable & was cheaper than the export only unit

i think my friend's 712a is from a bad batch

UPDATE
it appears that both tla#0101 & tla#0000 are identical
WARNING 1MB in size & will be available for limited time (according to the publisher)
http://members.jcom.home.ne.jp/32327678 ... 2_0000.jpg
http://members.jcom.home.ne.jp/32327678 ... 2_0101.jpg

dvd meida writing test
http://homepage2.nifty.com/yss/px712/dvd.htm
cd media writing test
http://homepage2.nifty.com/yss/px712/cdr.htm
using varirec to make princo 4x to be readable early version of ps2
http://homepage2.nifty.com/yss/px712/varirec.htm

4x+r media test
http://homepage2.nifty.com/yss/px712aj/kp_4xk.htm
4x -r media test
http://homepage2.nifty.com/yss/px712aj/kp_4xt.htm

8x media tests are being prepared

btw, yss is claiming that certain cdda data will ruin cdda burning & he is suspecting that sanyo chip is the cause; he even made audio data cue/bin file to test (1MB)
http://homepage2.nifty.com/yss/newcds/C2.zip
plextor premium/708a/712a are affected according to yss
yss wrote that lg, liteon, nec drives were not affected at all.

last but least
CREDIT
sitename:cd-r laboratory

(laboratory in chinese characters)
author:YSS (nick name)
contact:ysscdr@yahoo.co.jp

by **dolphinius_rex** on Sat Jun 05, 2004 2:50 pm

Here's some more scans done by the PX-712a... only with a bit of a twist:
http://www.cdrinfo.com/forum/tm.asp?m=68746

by **aviationwiz** on Sat Jun 05, 2004 3:29 pm

I wonder why this disc appears to be of much worse quality...

by **shimman** on Sat Jun 05, 2004 4:02 pm

btw, 712a cannot read gigareced cd as well as premium
i did not notice but plextools let users check physical quality of blank media with fe/te check which finds focus errors( check how flat the media is) track errors (how uniform the spiral is)

i am waiting yss's testing on made in chine tla#0101 712a & of course ian's review.

by **dolphinius_rex** on Sat Jun 05, 2004 4:04 pm

Aviationwiz:

What have I been saying for so long... Ritek has quality control issues

by **aviationwiz** on Sat Jun 05, 2004 4:19 pm

dolphinius_rex wrote:Aviationwiz:

What have I been saying for so long... Ritek has quality control issues

Haha, yeah...

by **aviationwiz** on Sat Jun 05, 2004 5:13 pm

Relating POF Errors to Disc Unreadability

Below is a stamped disc which I rented From Netflix, it is disc 4 of the West Wing Season 2 (thier disc 4) They have disc 1, which is double-sided retail as two discs, disc 1 is side A, disc 2 is side B, etc.

Scanned in the PX-712A with firmware 1.02:

That is also precisely where players error out on the disc. This is the second copy of this disc that has been bad.

Here's what KProbe on the SOHD-167T reports:

by **dolphinius_rex** on Sat Jun 05, 2004 6:02 pm

I'm going to venture a guess in that the LiteOn can also play the movie all the way through with no errors?

Still, those aren't the results I would have expected!

by **aviationwiz** on Sat Jun 05, 2004 6:23 pm

dolphinius_rex wrote:I'm going to venture a guess in that the LiteOn can also play the movie all the way through with no errors?

Nope, every drive error's on it, including the Lite-On.

by **aviationwiz** on Sat Jun 19, 2004 10:59 pm

How's this for quality. Fuji 4x DVD+R (RICOHJPNR01) sold in 100 spindle, made in Taiwan.

Disc was written at 6x in the PX-712A:

Some of the best I've ever seen

by **hydrogen** on Sun Jun 20, 2004 4:00 am

dang, that's an awesome scan.

So, how are you liking your Plextor 712a drive? Is it as picky with media as people said the Plextor 708a was.

Is it better than the Pioneer A07?

by **aviationwiz** on Sun Jun 20, 2004 1:19 pm

The 712 is a great drive, I don't find it picky at all, and I didn't find the 708 picky either. It's for sure better than the A07, the A07 stunk without hacked firmware, but this drive, this drive is amazing. I only use MCC, or Ritek media, so I don't have media problems.

by **dolphinius_rex** on Sun Jun 20, 2004 2:58 pm

aviationwiz wrote:The 712 is a great drive, I don't find it picky at all, and I didn't find the 708 picky either. It's for sure better than the A07, the A07 stunk without hacked firmware, but this drive, this drive is amazing. I only use MCC, or Ritek media, so I don't have media problems.

Umm did you ever SCAN any of the media burned in the DVR-107? :lol:

The 107 only had issues with DVD+R media really, other then that it was quite good, and burns Optodisc media VERY well (well, not the Optodisc DVD+Rs...). The Plextor 712a still has issues with Optodisc's 8x DVD-Rs, whereas the Pioneer DVR-107 does not :wink:

by **axelrod** on Sun Jun 20, 2004 9:15 pm

What do you think the most reliable media types are for the 712, ranked from cost... ie....

Most expensive/best =
secondary, etc.

I know the Ty is considered the best bet, but I'm curious what comes next price-wise. I'm new to this, but what about Memorex, or Fuji?

thanks!

ax

by **hydrogen** on Sun Jun 20, 2004 11:16 pm

dolphin,

What we need is a combination drive. We need Plextor's +r and Pioneer's -r burning abilities, and put them into one drive. That would be the ultimate drive.

The Pioneer loves -r media. The Plextor loves +r.

How good does the Plextor do with -r media?

aviationwiz,

I'm glad it's not a picky drive. I wonder why people said the Plextor 708a was a picky drive, when you said it wasn't for you?

Does the Plextor allow you to overburn 4x media or something? You said that the Pioneer needed a hack. The only hack I know of was to allow overburning of media.

I wish I could get Pioneer to release a firmware that allowed people to burn 4x media at 8x, but I don't think they ever will. They are stubborn

by **aviationwiz** on Sun Jun 20, 2004 11:18 pm

Pretty well if you ask me! And this is Ritek!

by **hydrogen** on Mon Jun 21, 2004 3:16 am

That's a good scan. I'm very impressed. I wish Ritek could always make good media.

What other 4x dvd-r media do you have?

Does the Plextor allow you to overburn 4x media? Is that why you said it was better than the Pioneer?

by **aviationwiz** on Mon Jun 21, 2004 3:22 am

The only 4x DVD-R media I have are these here G04's. As for overburning DVD media, I haven't and I wouldn't. Unless you mean overclocking the write speed of the media, then I suppose so, as I am starting to like what I see when I burn my RICOHJPNR01's at 6x.

by **hydrogen** on Mon Jun 21, 2004 3:33 am

I meant overclocking 4x media. I'm sorry about that.

I was trying to figure out why you said the Pioneer drive was only good with the hacked firmware.

That would have to mean that you can burn your 4x media at higher speeds on the Plextor 712a. Is that what you meant?

Have you had any bad Ritek batchs yet?

Where do you buy your Ritek from?

PX-712A Quality, Q-Check Scans

PX-712A Quality, Q-Check Scans

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