DVX
Instruction
Manual
1
INTRODUCTION
The Clover Systems DVX-4 is an affordable high-speed tool to quantitatively measure the quality of DVD and CD
discs. It will analyze DVD discs at up to 16X, and CDs at up to 48X. The exclusive QuickScan feature further reduces
test time by up to 10 times.
DVX measures disc quality by examining the quantity and severity of errors generated during playback. It can also
automatically measure analog parameters related to pit geometry, including reflectivity, modulation (I
14
/ I
14H
),
resolution (I
3
/ I
14
),
I
11
/ I
top,
I
3
/ I
top,
beta, jitter, focus error, and tracking error. Together, this information provides a
thorough analysis of disc quality. Also see the section titled
on pg. 35.
DVX-4 consists of the DVX high-speed DVD / CD Analyzer, AMM-1 Analog Measurement Module, and small form
factor Windows PC. It is a self-contained, portable system.
USB and PS2 ports can accommodate a keyboard and mouse. A 10/100/1000 MB/s Ethernet port is also included for
connection to a network.
DVX can perform various format-checking tests on data discs, and do bit-for-bit data comparison on all types of DVDs
and CDs.
On CDs, DVX automatically measures and displays BLER (Block Error Rate), E11, E21, E31, E12, E22, and E32
(uncorrectable errors)
, as well as Reflectivity, I11/Itop, I3/Itop, Beta, Focus Error, Tracking Error, and Jitter. Both
average values and peak values are displayed for each parameter. For E22 and E32, the TOTAL count is displayed in
addition to average and peak.
On DVDs, DVX measures and displays PI bytes, PO bytes, PIE, POE, PIF, POF, and UNCR (uncorrectable blocks). In
addition to peak and average values, the total number of each type of error is also displayed. Reflectivity, modulation
(I
14
/ I
14H
),
resolution (I
3
/ I
14
),
beta, jitter, focus error, and tracking error are also automatically measured and
displayed.
The built in grading system assigns a quality grade (A-F) based on the results of the test.
The DVX software is a Windows program that will run under Windows 2000 / XP / Vista / 7. It gathers data from the
DVX, and displays the data in the form of charts and statistics for the whole disc, and prints a summary of the results.
CONVENTIONS
The following document conventions are used throughout this manual:
CAPITAL LETTERS
Represent filenames, directory names, or drive letters.
Initial Capitals Represent names of programs, menus, dialog boxes, buttons, and named windows.
Italic
Represent menu commands.
1
See H
Uncorrectable
H on Pg. 37
