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4.2. White Balance Adjustment
4.2.1. Overview
▪ Case : Cool Mode
Purpose : Adjust the color temperature to reduce the
deviation of the module color temperature.
Principle : To adjust the white balance without the saturation,
Fix the G gain to 172 (default data) and change
the others ( R/B Gain ).
Adjustment mode : mode - Cool
▪ Case : Medium / Warm Mode
Purpose : Adjust the color temperature to reduce the
deviation of the module color temperature.
Principle : To adjust the white balance without the saturation,
Fix the one of R/G/B gain to 192 (default data)
and decrease the others.
Adjustment mode : Two modes - Medium/Warm
▪ Adj. condition : normal temperature
1) Surrounding Temperature: 25±5 °C
2) Warm-up time: About 5 Min
3) Surrounding Humidity: 20% ~ 80%
4.2.2. Equipment
(1) Color Analyzer: CA-210 (LED Module : CH 14)
(2) Adjustment Computer(During auto adj., RS-232C protocol
is needed)
(3) Adjustment Remote control
(4) Video Signal Generator MSPG-925F 720p/204-Gray
(Model: 217, Pattern: 49)
-> Only when internal pattern is not available
▪ Color Analyzer Matrix should be calibrated using CS-100.
4.2.3. Equipment connection MAP
4.2.4. Adj. Command (Protocol)
<Command Format>
- LEN: Number of Data Byte to be sent
- CMD: Command
- VAL: FOS Data value
- CS: Checksum of sent data
- A: Acknowledge
Ex) [Send: JA_00_DD] / [Ack: A_00_okDDX]
▪ RS-232C Command used during auto-adjustment.
Ex) wb 00 00 -> Begin white balance auto-adj.
wb 00 10 -> Gain adj.
ja 00 ff -> Adj. data
jb 00 c0
...
...
wb 00 1f → Gain adj. completed
*(wb 00 20(Start), wb 00 2f(end)) → Off-set adj.
wb 00 ff → End white balance auto-adj.
▪ Adj. Map
4.2.5. Adj. method
(1) Auto adj. method
1) Set TV in adj. mode using POWER ON key.
2) Zero calibrate probe then place it on the center of the
Display.
3) Connect Cable.(RS-232C to USB)
4) Select mode in adj. Program and begin adj.
5) When adj. is complete (OK Sign), check adj. status pre
mode. (Warm, Medium, Cool)
6) Remove probe and RS-232C cable to complete adj.
▪ W/B Adj. must begin as start command “wb 00 00” , and
finish as end command “wb 00 ff”, and Adj. offset if need.
START 6E A 50 A LEN A 03 A CMD
A
00
A VAL A
CS STOP
Color Analyzer
Computer
Pattern Generator
RS-232C
RS-232C
RS-232C
Probe
Signal Source
* If TV internal pattern is used, not needed
RS-232C COMMAND
[CMD
ID
DATA]
Explanation
wb
00
00
Begin White Balance adjustment
wb
00
10
Gain adjustment(internal white pattern)
wb
00
1f
Gain adjustment completed
wb
00
20
Offset adjustment(internal white pattern)
wb
00
2f
Offset adjustment completed
wb
00
ff
End White Balance adjustment
Adj. item
Command
(lower case ASCII)
Data Range
(Hex.)
Default
(Decimal)
CMD1
CMD2
MIN
MAX
Cool
R Gain
j
g
00
C0
G Gain
j
h
00
C0
B Gain
j
i
00
C0
R Cut
G Cut
B Cut
G Cut
B Cut
Medium
R Gain
j
a
00
C0
G Gain
j
b
00
C0
B Gain
j
c
00
C0
R Cut
G Cut
B Cut
G Cut
B Cut
Warm
R Gain
j
d
00
C0
G Gain
j
e
00
C0
B Gain
j
f
00
C0
R Cut
G Cut
G Cut
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