PCAV vs. ZCLV Recording Technlogies

Review Pages

1. Introduction
2. World Of Error Correction
3. Ricoh 74min 24x Test Results
4. Ricoh 74min 24x Test Results - Acer CRW2010A
5. Ricoh 74min 24x Test Results - LiteOn LTR-24102B
6. Ricoh 74min 24x Test Results - Plextor PX-W2410A
7. Ricoh 74min 24x Test Results - Ricoh MP7200A
8. Ricoh 74min 24x Test Results - Ricoh MP9200A
9. Ricoh 74min 24x Test Results - Sanyo CRD-BP1500P
10. Ricoh 74min 24x Test Results - Yamaha CRW2200E
11. Conclusion

Partial-CAV versus Zone-CLV - Page 7

Ricoh 74min 24x Test Results - Ricoh MP7200A

We used the latest 20x and 24x recorders from various manufacturers in order to see how they perform with specific media brands under their maximum speeds. All CDs burned with Nero 5.5.3.5 and were Audio CDs with 74:51:27 lengh size.

- Test Results

In order to simplify the results we have gathered them in the following table:

20x writing speed
Model	C1		Average Burning Time (secs)
Model	Max	Average	Average Burning Time (secs)
Acer CRW2010	47	8,2	314
LiteOn LTR-24102B	38	2,8	280
Plextor PX-W2410A	20	1,9	267
Ricoh MP7200 (JustSpeed On)	39	0,7	277
Ricoh MP7200 (JustSpeed Off)	18	0,5	272
Ricoh MP9200 (JustSpeed on)	18	1,2	290
Ricoh MP9200 (JustSpeed off)	19	2,6	272
Yamaha 2200E (OWC on)	29	0,6	420 (with 1.0d firmware time is lower)
Yamaha 2200E (OWC off)	30	1,48	282

The Ricoh MP7200A drive when recording at 20x with JustSpeed enabled, produced a 0.7 C1 average error rate. The drive produced high error rates at 5mins, which, however, is not the speed change point from 16x to 20x! During the rest of the disc C1 errors seem very small, as most of them are close to 0.

To our surprise, this drive when JustSpeed was disabled produced a better overall image! How can this be possible? It seems that the writing strategy this drive follows in this case is, as expected, more conservative. How about the Ricoh engineers offering a further firmware tweaking?