Tektronix WFM7020 Technical Reference

Incoming Inspection
Table 62: LCD Vi
sual Defects
Defect Type
1
Allowable Defect
>0.020˝ None
Circular Defect
2
0.015˝ to 0.020˝
Maximum of tw
oallowedwithina2Icircle
Black Defec
t
(opaque)
>0.005˝ None
>0.004˝ wid
th
None
0.003˝ to
0.004˝wid
e
Max length 0.500˝
0.0021˝ to
0.0030˝wi
de
Max length 1.000˝
Linear Defect
(Scratches)
0.0010˝ to
0.0020˝w
ide
Max length 1.500˝
Stains,
discolorations,
streaks, scuffs
Allowed i
f they fade when backlit
1
Defects should be visible from 18″ under normal lighting. If you have to hold it closer or use special lighting to see
the defect, it is not a rejectable defect.
2
For irregular defects, use (LengthxWidth)/2.
9. Record pass or fail for Pixel Defect in the test record.
10. Press the CONFIG button to close the configuration menu.
62 Waveform Monitors Specifications and Performance Verification

Tektronix WFM7020 Specifications

General

Brand	Tektronix
Model	WFM7020
Category	Monitor
Language	English