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18 107P2 CM 25 GSIII DDC Instructions
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 with Software DDC from
the old board onto the new board if circuit board have been replaced, in
this case the DDC data does not need to be re-programmed. The 15-pin D-sub connector (male) of the signal cable
on the 3rd row for DDC feature :
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
obtained from VESA.
DDC EDID structure
For the monitor : Standard Version 3.0
Structure Version 1.3
1 5
2. System and equipment requirements 6 10
11 15
1. An i486 (or above) personal computer or compatible.
2. Microsoft operation system Windows 95/98.
3. EDID301.EXE program (3138 106 10103) shown as Fig. 1
4. Software DDC Alignment kits (4822 310 11184) shown as Fig. 2.
The kit contents: a. Alignment box x1
b. Printer cable x1
c. D-Sub cable x1
Note: The EDID301.EXE (Release Version 1.55) is a
windows-based program, which cannot be run in MS-DOS.
Pin No. Assignment Pin No. Assignment
1 Red video input 9 No pin
2 Green video input 10 Logic ground
EDID301.EXE
3 Blue video input 11 Identification output -
Ver:1.55
4 Identification output - Connected to pin 10
Connected to pin 10 12 Serial data line(SDA)
Figure 1 Diskette with EDID301.EXE 5 Ground 13 H.Sync
6 Red video ground 14 V.Sync(VCLK for DDC)
DC 8V~12V Power indicator 7 Green video ground 15 Data clock line(SCL)
8 Blue video ground
To Monitor To Printer
Video Card
Fig. 2 Alignment Kits
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DDC Instructions 107P2 CM 25 GSIII 19
Go to cover page
4. Configuration and procedure Re-programming Software DDC
Following descirptions are the connection and procedure for Software Step 1: After initialize alignment box, connecting all cables and box as
DDC, the main EEPROM can be re-programmed along with Software Fig. 3
DDC by enabling "factory memory data write" function on the DDC Step 2: Follow the steps on DDC re-programming instructions to staring
program (EDID301.EXE). re-programming.
To access factory mode: Rear view of the monitor
Turn off monitor (don't turn off PC)
- Press " " and " " simultaneously on the front control panel PC
,then press " ",wait till the OSD menu with characters
" factory mode (below OSD menu)" come on the screen of monitor.
To printer port (LTP1)
Initialize alignment box
DC Power
To video card
8~12 V
In order to avoid that monitor entering power saving mode due to ~
sync will cut off by alignment box, it is necessary to initialize
alignment box before running programming software Video cable
(EDID301.EXE). Following steps show you the procedures and
To
connection. Monitor
Printer
Port
Step 1: Supply 8~12V DC power source to the Alignment box by To PC
plugging a DC power cord or using batteries.
Step 2: Connecting printer cable and video cable of monitor as Fig. A
Step 3: Run the EDID301.EXE program until the main menu appears. Fig. 3
This is for initialize alignment box.
5. DDC re-programming instructions
Start on DDC program
Rear view of the monitor Start Microsoft Windows.
1. Insert the disk containing EDID301.EXE program into floppy disk
drive.
2. Click , choose Run at start menu of Windows 95/98.
Video cable
PC
To printer port (LTP1)
DC Power
To video card
8~12 V
~
4. At the submenu, type the letter of your computer's floppy disk drive
followed by :EDID301 (for example, A:\EDID301, as shown in Fig. 5).
To
Monitor
Printer
Port
To PC
Fig. A
A:\edid301