IBM DG3 user manual

Summary of the content on the page No. 1

IBM 9503-T221 LCD monitor Updating the EDID settings for your monitor (R1.3)

Introduction
Modern monitors internally store data on their performance characteristics and capabilities in an
abbreviated format. The information is called the monitor Extended Display Identification Data or EDID
and is read by operating systems and video graphics cards to determine the optimum display properties
for the system. The IBM T221 is a very advanced and flexible monitor and it exceeds the capab

Summary of the content on the page No. 2

IBM 9503-T221 LCD monitor Updating the EDID settings for your monitor (R1.3) 2. Enabling the special OSD (on-screen display) menu a. Press the leftmost OSD button (select/enter) and navigate to the (i) (information) icon by using the ‘<-‘ (navigate left) or ‘->’ (navigate right) buttons. Press the ‘select/enter’ button to access the information screen. The refresh rate and screen resolution will be displayed, as in this example: b. Press the ’navigate left‘ button three times,

Summary of the content on the page No. 3

IBM 9503-T221 LCD monitor Updating the EDID settings for your monitor (R1.3) 4. Changing the EDID setting a. From the table in the ‘Valid settings’ section, choose the number of the EDID setting you want to use. b. Set the brightness level to the number for the EDIDsetting you have chosen (see user’s guide), you can choose values from 0 to 20. For higher numbers, firstly enable the special OSD menu and then exit it by using the ‘select/enter’ button. The brightness range will now

Summary of the content on the page No. 4

IBM 9503-T221 LCD monitor Updating the EDID settings for your monitor (R1.3) Valid settings The DDC-CPU firmware that performs the EDID setting process within the monitor can only detect and update certain types of EDID setting. If it encounters a setting it does not recognize, it reads it as 000 (unknown). From the following table, choose the EDID setting that is appropriate for the operating system and video graphics card you are using. If you need to use an EDID setting not l