PIN MNEMONIC SIGNAL
1 RV Red Video
2 GV Green Video/Sync on Green
3 BV Blue Video
4 NC None
5 GND Ground (DDC Return) or Cable detect
6RGRedGND
7GGGreenGND
8BGBlueGND
9+5V+5V
10 SG Sync GND or Cable detect
11 NC None
12 SDA DDC Data
13 HS Horizontal Sync
14 VS Vertical Sync
15 SCL DDC Clock
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X
20
HP L1502
DDC Instructions
General
Pin assignment
A. 15-pin D-Sub Connector
DDC Data Re-programming
Analog DDC IC, & EEPROM
Additional information
In case the DDC data memory IC or main EEPROM which storage all
factory settings were replaced due to a defect, the serial numbers have
to be re-programmed" ".
It is advised to re-soldered DDC IC and main EEPROM 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.
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.
1. An i486 (or above) personal computer or compatible.
2. Microsoft operation system Windows 95/98 .
Y o Install the EDID_PORT_Tool under Win2000/XP . As
Fig. 1 .
A. Cody the "UserPort.sys" to C:\WINNT\system32\drivers(win2000)
C:\WINDOWS\system32\drivers(winXP)
B. Running " io.exe" everytime, Before you start to programming
edid data .
4. A/D Alignment kits (3138 106 10079):
inclusion : a. Alignment box x1 (as Fig. 2)
b. Printer cable x1
c. (D-Sub) to (D-Sub) cable x1
Note: The EDID45.EXE is a windows-based program, which cannot
be run in MS-DOS.
System and equipment requirements
ou have t
3. EDID45.EXE program .
Note: The alignment box has already build-in a batteries socket for
using as power source. Pull out the socket by
remove four screws at the rear of box. Please do not forget that
remove batteries after programming. The energy of batteries can
only drive circuits for a short period of time.
batteries (5V)
Fig. 2Fig. 2
Fig. 1Fig. 1
1
5
6
10
11
15
To Monitor
D-sub cable
DC 5V
To Printer port
Power
indicator
Fig. 3Fig. 3
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