TCL Multimedia Technology Holding CRT BU R&D Center
Chassis Name
NX56-AP&NX56B-AP
Serial No.
Issued on
2008-01-18
Page
Page 10 of 17
Updated on
2009-04-24
Version
4.0
3.5 Sub brightness adjustment
1. Input eight steps gray signal.
2. Press key “3” to enter sub-brightness adjustment.
3. At dynamic state, adjust “BRTC” until the secondary gray bar just to be seen. (like
picture 3.5.)
The 2nd gray scale
Picture 3.5
3.6 Picture Geometry adjustment
3.6.1 Vertical geometry adjustment
1. Input a PAL crosshatch pattern signal to RF input.
2. Enter P-Mode, press key “1” to select vertical geometry adjustment. (The OSD menu
for this adjustment as below table 3.6.1. For NTSC signal, the “-50” will be replaced with
“-60”.)
3. Adjust the value of the corresponding item to make the vertical geometry of the
pattern look good.
4. Apply NTSC signal to adjust these value for NTSC vertical geometry.
Table 3.6.1: The vertical geometry adjustment OSD menu
OSD menu
Default Value
Description
Remark
VSLOPE-50
32
Vertical slope(VS)
Adjust to right value
VCEN-50
32
Vertical shift (VSH)
Adjust to right value
VSIZE-50 32
Vertical
amplitude(VA)
Adjust to right value
VZOOM-50
25
Vertical zoom(VX)
Adjust to right value
VSC-50
32
S-correction(SC)
Adjust to right value
VSCROLL-50 32 Vertical Scroll
（
VCS
）
Adjust to right value
Note:
1. For NTSC signal, the “-50” will be replaced with “-60”.
2. For NTSC signal, only the
“VCEN-60”
and
“VSIZE-60”
items need the adjustment,
the other items use the same data as PAL signal.
