Pioneer DVD-R7783, Руководство по обслуживанию, Страница: 44 / 96

DVD-R7783
44
1 2 3 4
1 2 3 4
C
D
F
A
B
E
Note: A blank DVD-R disc is necessary for a writing
diagnosis. A disc that has been used for a writing
diagnosis cannot be reused.
Writing speed
Designate a speed at which data are to be written on the
disc. The maximum writing speed for the disc is selected as
default.
All-address writing
After executing OPC 20 times, a writing test will be
executed. If a check mark is not placed for this item, 64
Mbyte of data are written on the disc, then finalizing is
executed. If a check mark is placed, 64 Gbyte of data are
written on the disc, then finalizing is executed.
Using a laptop computer, it takes about 100 minutes for all-
address writing.
Writing at the innermost and outermost tracks
After executing OPC 20 times, a writing test will be
executed. If a check mark is placed for this item, 32 Mbyte
of data are written at the innermost and outermost tracks of
the disc, then the error rates of the written parts are
measured.
Update button
(can be used only when no changer is connected)
To update disc data for the loaded disc. Click on this button
after a disc is loaded or unloaded manually. Before
executing a writing test, check that the medium is set to
"DVD (blank)."
Write & Verify button
Writing is executed with the settings designated for a disc
then verification is executed after writing is completed. The
results of a diagnosis and error content are displayed in the
list box, and they are also recorded in a file "driven.log" for
each drive, where n is the drive number.
Verification-only button
Verification is executed for a disc on which writing is
completed. This function cannot be used for a disc on
which writing was executed at the innermost and outermost
tracks.
6. Diagnosis (WRITE)
Address
When "Designating address" is selected, designate the
address to be read. The figure that can be entered is up to
the maximum address number minus 32, as data for 32
addresses are read at one time.
Maximum address: The maximum address number of the
loaded disc
Diagnosis items
Seek(FULL):
After the innermost and outermost tracks are
sought for a designated number of times, the maximum
time and average time are displayed, and the results are
determined.
Seek(1/3): After one-third and two-thirds points of the
designated address are sought for a designated number of
times, the maximum time and average time are displayed,
and the results are determined.
All-address read: All addresses are read for 64 Kbytes. If
an address is designated in "Address," all addresses from
that address to the maximum address are read.
Random read: After a random address is read for a
designated number of times, the average time is displayed,
and the results are determined.
Designated address read: An address designated in
"Address" is read for a designated number of times.
Error rate: The error rate is measured and displayed.
All-address error rate: The error rate for the whole disc is
measured.
Data-transfer rate: The data-transfer rate is measured.
This is not used for the diagnosis of the DVD-R7783.
Results
Accurate seek (read) time cannot be measured, because
unrelated tasks are executed in the Windows environment
while this application is operating. When the results are
determined, therefore, the margins are considered around
the standard thresholds.
GOOD: The result is within the standard threshold at
shipment.
OK: The result is within a proper margin although it
exceeded the standard threshold at shipment.
NG: The result is outside the standard threshold and a
proper margin.
Notes:
1. Reading is executed by 64 Kbytes.
2. If a linked part on a disc on which data are written in
multisession and multitrack is read, a media error or a
hardware error (error code: 3-xx-xx or 4-xx-xx) is
generated.