LG Electronics 42LA69**-Z* White Balance Adjustment, Overview, Equipment, Adj. Command Protocol

4.1.2. 2D EDID

▪Reference

-HDMI1 ~ HDMI4 / RGB

-In the data of EDID, bellows may be different by S/W or Input mode.

ⓐProduct ID

HEX	EDID Table	DDC Function
0001	0100	Analog
0001	0100	Digital

ⓑSerial No: Controlled on production line. ⓒ Month, Year: Controlled on production line:

ex) Monthly : ‘01’ → ‘01’

Year : ‘2012’ → ‘16’

ⓓModel Name(Hex): LGTV

Chassis	MODEL NAME(HEX)
LD33B	00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20

ⓔChecksum(LG TV): Changeable by total EDID data.

	ⓔ1	ⓔ2	ⓔ3
HDMI1	43	15	X
HDMI2	43	05	X
HDMI3	43	F5	X

ⓕVendor Specific(HDMI)

INPUT	MODEL NAME(HEX)
HDMI1	67 03 0C 00 10 00 80 2D
HDMI2	67 03 0C 00 20 00 80 2D
HDMI3	67 03 0C 00 30 00 80 2D

4.2. White Balance Adjustment

4.2.1. Overview

▪W/B adj. Objective & How-it-works

(1)Objective: To reduce each Panel's W/B deviation

(2)How-it-works : When R/G/B gain in the OSD is at 192, it means the panel is at its Full Dynamic Range. In order to prevent saturation of Full Dynamic range and data, one of R/G/B is fixed at 192, and the other two is lowered to find the desired value.

(3)Adjustment condition : normal temperature

1)Surrounding Temperature : 25 °C ± 5 °C

2)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/216-Gray (Model: 217, Pattern: 78)

→Only when internal pattern is not available

▪Color Analyzer Matrix should be calibrated using CS-1000.

4.2.3. Equipment connection MAP

		Color Analyzer
Probe		RS-232C
		Computer
	RS -232C	RS-232C
		Pattern Generator
	Signal Source
	* If TV internal pattern is used, not needed

4.2.4. Adj. Command (Protocol)

<Command Format>

START 6E A 50 A LEN A 03 A CMD A 00 A VAL A CS STOP

-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.

RS-232C COMMAND			Explantion
[CMD	ID	DATA]
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
			(internal pattern disappears )

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

Applied Model : LD33B Chassis ALL MODELS

	Adj. item	Command		Data Range		Default
		(lower caseASCII)		(Hex.)		(Decimal)
		CMD1	CMD2	MIN	MAX
	R Gain	j	g	00	C0
	G Gain	j	h	00	C0
Cool	B Gain	j	i	00	C0
	R Cut
	G Cut
	B Cut
	R Gain	j	a	00	C0
	G Gain	j	b	00	C0
Medium	B Gain	j	c	00	C0
	R Cut
	G Cut
	B Cut
	R Gain	j	d	00	C0
	G Gain	j	e	00	C0
Warm	B Gain	j	f	00	C0
	R Cut
	G Cut

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