Plextor PX-712A Dual DVD±RW recorder - Page 16

GigaRec - Page 2

- Playback Tests

In order to test the GigaRec function we used three CD players and the results are presented in the following table:

#1st Test Disc Batch (SKC 80min 48X)

Below are the BETA/Jitter scans for all GigaRec tested media:

#2nd Test Disc Batch (BenQ 80min 52X)

#3rd Test Disc Batch (TDK 90min 40X)

- Summary

If someone asked us directly, "does GigaRec work?", our answer would be definantly yes. It does work and pretty well especially with 80min CD-R media. The produced discs will playback correctly at some rates and won't at others. The used media does affect the playability as was shown from our test results.

Using the BenQ 80min 48X CD-R media, the 0.6X/0.7X/0.8X rates had no problems while the other two (1.2X/1.3X) produced minor problems. The system had problems focusing from first to the last two tracks, high seek times, but when playback was sequential no problem occured.

Using the TDK 800MB CD-R media enabled higher GigaRec rates, which however weren't that impressive since the burned media isn't playable at some parts or at all. For the two lowest GigaRec rates (0.6X, 0.7X) the only working burning speed is 4X, normally since laser needs to stay focused when producing the higher pit lenghts.

For the remaining GigaRec rates (0.8X,1.2X,1.3X), 8X burning speed is selectable, we would suggest however using again the 4X speed with the highest (1.3X) rate.

Of course as you may understand, using other CD-R media and maybe combined with VariRec can produce totally different results...;-)

- Appendix

For testing we also used Mam SGUltra 80min 48X CD-R media with the 1.3X rate. The produced disc had all the usual symptoms of the 1.3X rate but the interesting part is that the PX-712A couldn't scan the disc for Beta/Jitter error rates...