We start our DVD writing quality measurements with DVD-R media. A variety of different MIDs were selected and burned at the maximum allowed speed. In each of the following pages, you will find detailed information about each disc, the burning and reading procedure as well as the related signal measurements that construct the overall quality picture for each disc.

You can always navigate across to the different MIDs in this review, using the page navigation drop down menu.

We should note here that POFs occur when the decoder is unable to correct all the data within an ECC block after attempting one pass of PI Row correction and PO column correction. The wording "one pass" is important because a commercial decoder is usually designed to make several passes or attempts during error correction. There is a possibility that bad bytes may be corrected in one of the subsequent passes. The decoders of DVD testers such the DaTARIUS system, use one pass during error correction. As a result, in some cases where POFs are reported by the tester, these can be corrected by commercial players and drives during reading due to multiple passes.

- Media Info

- Writing - 16x (11.70x average) in 6:15min

The writing speed dropped just before the end of the process, a behavior that usually influences the integrity of the recorded data at the specific areas.

- Reading - 16X (11.90X average)

DaTARIUS Scans -

This a good burn although a POF error is reported at around 56mm radius of the disc. This was introduced by the corresponding drop in the writing speed, as we saw in the writing graph. This error was expressed as a slight drop in the reading graph.