Ricoh MP5125 Burn Tests

[aviationwiz]

All disks burned on the Ricoh MP5125 at 2.4x. Read on the LTD-163D at max speed.

TDK (Ricoh) DVD+RW Test



Fuji (Ricoh) DVD+R Test



Memorex (Ricoh) DVD+R Test




How good are these results?

[aviationwiz]

Here's another one:




Does anyone know what is good and what is bad for these PI/PO tests?

[aviationwiz]

Another one:




I found out about this test on these forums, your telling me no one knows what's good and what's bad for PI/PO.

[Ian]

I found out about this test on these forums, your telling me no one knows what's good and what's bad for PI/PO.

That's exactly it. I don't think anyone is very familiar with these tests yet.

[cfitz]

The DVD specification requires that the sum of PI errors over any 8 consecutive ECC blocks be less than or equal to 280. That is the only official standard regarding PI/PO measurements. Of course, as with all specification limits, one would like to do better than the bare minimum required to meet the standards.

Keep in mind that we don't know exactly what units Karr is displaying on his PI/PO charts, just as we don't know exactly what units he displays for C1/C2. I wish we did, but I suspect that even he doesn't know. He may be simply displaying what the chipset returns, and to truly know the units we need to ask the chipset designers, whoever they may be.

In addition, as has been pointed out before here, tools such as KProbe, CD Doctor and WSES are not professional testing tools, and should not be expected to duplicate the results of professional tools running on controlled, calibrated hardware. Instead, they are handy utilities for gauging relative performance withn consumer drives. For example, they can help you decide that one brand of disc works better on your recorder than another, or one recording speed works better than another on your recorder. And as time goes by and more people post results, you can begin to get a feel for how your drive compares to other drives on the same media.

cfitz

[jase]

Based on my experiences, these results look fair-to-middling to me. None of the discs look seriously bad but the results aren't ideal.

Mind you you're using a different (older) reader to me, the discs may be being read at different speeds, and the discs are a different format (+R vs -R). That last point may be significant; whereas from my experiences -R discs tend to get worse toward the end of the disc those results seem to be showing a reverse trend; ie worse at the beginning, improving later. I'm not sure what to make of that as +R discs are said to have better calibration specifications.

In reality, as long as discs have PI max of less than 100, in general from what I make out the disc isn't too bad.