In the fifth test, we used Nero CD-DVD Speed 3.80 to create another data disc using a piece of RiDATA DVD-R and the BenQ DW1620 Pro with B7V9 firmware, but this time, we enabled Walking-OPC disabled using QSuite. This test was done at the maximum supported speed of 8x and the data disc required 8min12sec to create, the extra time taken was due to the Walking-OPC algorithm adjusting the laser in real time. After the disc was created, it was scanned for PIE/PIF/POF/Jitter on the same drive at 8x and a transfer rate scan at 16x was performed using an NEC ND-3520A with 3.04 stock firmware. Attached are the results from this test.
The total number of PIE errors remained pretty much the same compared to the burn with WOPC disabled, however, instead of PIE peaking a 104, this time it peaked at only 64. With WOPC enabled, PIF error totals increased, and despite the laser recalibrating at various points during the burn, the maximum PIF spike was 20, well over the DVD specifications. The jitter average was excellent in this case, at only 8.67%. However, as the transfer rate test shows, some drives may have difficulty reading back this disc due to the high number of PIF errors towards the end of the burn.
Next we test these discs with the NEC ND-3520A.