Christie CS50-D100U, Руководство пользователя

Страница: 56 / 116

OPERATION
RPMS, CS50 & CS70-D100U/UF User’s Manual
3-39
1.
2.
3.
4.
5.
6.
Test Pattern
Freeze Image
Color Enable
Odd Pixel Adjustment
Sync Noise Margin
Digital Noise Margin
Diagnostics and Calibration
Geometry
White
Figure 3.23. Diagnostics and Calibration menu
TEST PATTERN
– refer to description under Configuration.
COLOR ENABLE
– refer to description under Image Settings.
FREEZE IMAGE –
Enter a check mark to freeze the currently displayed image. Remove
the checkmark to return back to normal.
ODD PIXEL ADJUSTMENT
–
This
menu is used when Color Space is
set to RGB only. NOTE: Enabled
for Xe models only.
When using certain RGB sources
with still images, you may need to
adjust the normal gain or offset of
odd pixels in relation to even pixels.
This will smooth out very narrow
(1-pixel wide) checks or vertical stripes. You can remove these patterns as follows:
1)
Use an external grayscale test pattern with both dark and light gray areas.
2) Display the image in its native resolution – select No Resizing by accessing
Resize Preset in the Size and Position menu.
3)
Display a single color – select a color from the Color Enable pull down list or
use the
Func
key options described on the back of the keypad.
4)
Examine an area of darkest gray (but not black). If there is a 1-pixel wide pattern
present, adjust the odd pixel offset for the current color. Stop when the pattern
disappears and the area is smooth.
5) Examine an area of lightest gray (not white). If there is a 1-pixel wide pattern
present, adjust odd pixel gain for the current color. Stop when the pattern
disappears and the area is smooth.
6)
Repeat for each color, adjusting offset then gain for each.
NOTES: 1) Adjust offset before gain since offset affects gain. 2) A value of 128
represents no change in normal odd pixel offset or gain. 3) Odd Pixel Adjustment
eliminates “1 pixel on, 1 pixel off” patterns, not any type of larger patterns.
SYNC NOISE MARGIN
–
Enabled for D100UF models only, this option allows you to
set how sensitive the V & HC sync inputs are to noise. A higher value will allow
noisier sources to be locked onto properly and a lower value will allow locking to
more
heavily attenuated signals. Adjust sync noise margin using the slidebar.