Cvbs; Video Alignment; Alignment Conditions; Adc Calibration - TCL L55E5800UDS Service Manual

R&D SHENZHEN
Channel band

2.4.3 CVBS

2.5.5.1 CVBS input
Connect AV cable with CVBS and audio L, R signal to P901 .
Change the display source to CVBS
Test Pattern
Format
(Generated by Chroma2327)

3 Video Alignment

On MS69KE-LA platform, Alignment items could be achieved by using serial port with
UART protocol, P1002 USB port could be used for UART purpose, pin definition is as
follows:
Pin 9---RXD;
Pin 8---TXD;
Before carry out the alignment, it is very important to make sure the Project ID is correct.

Alignment Conditions

In order to have defined conditions for the alignment procedure, the TV set should be
warmed up for 10 minutes.

3.1 ADC Calibration

MS1368K-LA
is no need to do the ADC calibration..

3.2 White balance

Only the Normal Color Temperature must to be adjusted, the Warm & Cool data will be
changed according to the default offset, but these offset also should been changed according
to the manufacture condition. For more information about Color Temperature, please refer to
the Appendix 2,
The standard data will be confirmed by our PQ engineers, Now these data only is reference.

3.2.1 CUT-OFF ALIGNMENT

Cut-off alignment is used to define the color co-ordinates for low luminance level. This
alignment has to be done for the following standards:
VHF-L
SMPTE RP-133
NTSC M
Page
12
of 12 Pages
VHF-H
32-step greyscale
NTSC M
(Generated by Chroma2327)
Date 2013/12/2
Index
Draft
Name
UHF
- 5
- 5