File name p16_19.pdf16 105B2 CM23 GSIII DDC Instructions
9 Go to cover page
1. General 3. Pin assignment
DDC Data Re-programming
A. 15-pin D-Sub Connector
In case the main EEPROM with Software DDC which store all factory
settings were replaced because a defect,repaired monitor the serial
numbers have to be re-programmed.
It is advised to re-soldered the main EEPROM from the old board onto
The 15-pin D-sub connector (male) of the signal cable
the new board if circuit board have been replaced, in this case the DDC on the 3rd row for DDC feature :
data does not need to be re-programmed.
Additional information
Additional information about DDC (Display Data Channel) may be
obtained from Video Electronics Standards Association (VESA).
Extended Display Identification Data(EDID) information may be also 1 5
obtained from VESA. 6 10
11 15
DDC EDID structure
For the monitor : Standard Version 3.0
Structure Version 1.2
2. System and equipment requirements
1. An i486 (or above) personal computer or compatible.
2. Microsoft operation system Windows 95/98. Assignment Pin No. Assignment
Pin No.
3. EDID301.EXE program (3138 106 10103) shown as Fig. 1
4. Software DDC Alignment kits (4822 310 11184) shown as Fig. 2. 1 Red video input 9 No pin
The kit contents: a. Alignment box x1 2 Green video input 10 Logic ground
b. Printer cable x1 Blue video input Identification output -
3 11
c. D-Sub cable x1 Connected to pin 10
4 Identification output -
Connected to pin 10 12 Serial data line(SDA)
Note: The EDID301.EXE (Release Version 1.55,)is a windows-
based program, which cannot be run in MS-DOS. 5 Salf test 13 H.Sync
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