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4.6.5 TIPS FOR AVOIDING BURN-IN ON PLASMA DISPLAYS
In order to avoid the possibility of burn-in on your Plasma display (for video that does not occupy the whole
screen) it is recommended that you change the background color from the default Black to another mid-tone
color. Just follow the steps below:
• Press the
Menu
remote control key to enter the OSD (On Screen Display) menu
• Select
Image
then
Crop
• Press the
action button and set the background color by selecting
the color and pressing
OK
If you are watching 4:3 letterbox material* or 16:9 letterbox (2.35:1 anamorphic widescreen) material#, and
don’t want the top and bottom black bars to increase the possibility of burn-in, you may mask them out with a
mid-tone color. Just follow the steps below:
• Press the
Menu
remote control key to enter the OSD (On Screen Display) menu
• Select the
Advanced Option
under
System
sub-menu and turn
Advanced Option
ON
• Select
Output
then
Screen Masking
• Press the
action button and set the mask layer color by selecting
the color and pressing
OK
• Press the
Back
remote control key to return to the previous page
• Press the
action button
• Select the
Top/Bottom
slider and press the
Left/Right
remote control keys to adjust
the size of the mask layer
* 4:3 source but with black bars at top and bottom; which places meaningful video data at the centre of a 16:9 area
# 16:9 source but with black bars at top and bottom; which places meaningful video data at the centre of a 2.35:1 area
If you are watching 1.85:1 material, you may mask off the small black bars on top or bottom of the image
using the method above; or you slightly increase
Overscan
to get rid of them. Follow the steps below:
• Press the
Menu
remote control key to enter the OSD (On Screen Display) menu
• Select
Image
then
Overscan
• Press
Left/Right
remote control keys to adjust overscan of image
4.7 BASIC SETUP TIPS FOR CRT PROJECTORS
In order to connect
Crystalio II
to a CRT projector you will need either an HDMI input card (available for some
models - please seek advice from your dealer) or an HDMI-to-RGBHV adapter. In order to carry out the
instructions in this section, any card or adapter will need to accurately transcode custom resolutions from
digital to analog.
Please note that
Crystalio II
is unable to output an HDCP encrypted signal to non-compliant devices.CRT
projectors are inherently different to pixel-based displays because they are true multi-scan displays. In other
words, they can display any number of pixels so long as the required horizontal scan rate (KHz) and vertical
refresh rates (Hz) fall within the projector’s capabilities. Check your projector’s user manual to determine its
maximum scan rates; normally the vertical refresh limit will not be an issue since most projectors will be capable
of at least 120Hz and as high as 240Hz. More important is the horizontal scan rate which will determine a
sensible resolution range.
For all CRT projectors, multiple resolutions will give optimum results. Since your projector is multi-scan it can
correctly display video at vertical refresh rates that suit the source. 48Hz, 59.94Hz, 60Hz or 72Hz may be used
for NTSC. 50Hz or 75Hz will suit PAL sources. (Other vertical refresh rates exist but the most common ones are
listed here).
• You can check the horizontal scan rate of a resolution for which you know the timing specification by
adding all the vertical lines and multiplying the figure by the vertical refresh rate. For example, let’s take
a 1280 x 720 @ 60Hz timing which has 720 active lines, a vertical front porch of 3, a vertical sync width
of 7 and a vertical back porch of 23. Total vertical figure becomes 753; multiply this by the vertical
refresh rate of 60 and the answer is 45180. Divide by 1000 for a horizontal scan rate of 45.180 KHz
• Horizontal timing specifications do not affect the horizontal scan rate. They do affect the pixel clock but
this is unlikely to completely prevent a CRT projector from displaying the resolution. However, models
with a low RGB bandwidth may not fully resolve resolutions that result in a high pixel clock
