User guide
15 
buttons for another 2 seconds and the window toggles to POWER LOCK. 
Repeat this procedure to unlock (toggle) the Power button. 
Figure 1 - OSD Main Menu 
OSD Control Options (Clockwise) 
Contrast 
• Adjusts the contrast or the values of color gain (RED, GREEN or BLUE). 
Brightness 
• Background luminance of the LCD panel is adjusted. 
Vertical Position 
• Adjusts vertical position of image. 
Horizontal Position 
• Adjusts horizontal position of image. 
Recall Defaults 
• Recalls the factory OSD default settings. 
RGB - Color Temperature 
• Select preset color temperature of 9300°K, 6500°K, 5500°K, 7500°K or select USER to 
customize Red, Green and Blue gain. 
Audio 
• Adjust audio volume of speakers internal to the 1528L monitor. 
Sharpness 
• Adjust image sharpness. 
Phase 
• Adjusts the phase of the dot clock. Adjust for best image. 
Clock 
• Adjusts the ratio of dividing frequency of the dot clock. Adjust to remove vertical dark 
bands in image. 
OSD Left/Right 
• The OSD screen is moved vertically right and left. 
OSD Up/Down 
• The OSD screen is moved vertically up and down. 
OSD Timeout 
• Adjusts the amount of time in which the OSD will disappear (45 to 255 seconds). 
Auto Adjust 










