BGH BT2909S Service Manual page 17

3.5.1 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 3.5.1. For NTSC signal, the "-50" will replace 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 3.5.1: The vertical geometry adjustment OSD menu
OSD menu Default Value
VSLOPE-50
VCEN-50
VSIZE-50
VZOOM-50
VSC-50
VSCROLL-50
*Notes:
1. For NTSC signal, the "-50" will replace 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.
3. On producing, please use the "AUTO OFFSET" (On page "2") function to easy the
geometry adjustment of NTSC signal. When finished the PAL signal geometry adjustment,
press "2" key to enter page "2" to select "AUTO OFFSET" item, press "y" key to active the
automatic offset function. Then the geometry adjustment of NTSC signal will finish
automated. If the geometry of NTSC signal is look good, you don't need to adjust the
geometry of NTSC signal any more.
3.5.2 Horizontal geometry adjustment
1. Input a PAL crosshatch pattern signal to RF input.
2. Enter P-Mode, press key "2" to select horizontal geometry adjustment. (The OSD
menu for this adjustment as below table 3.5.2. For NTSC signal, the "-50" will replace with
"-60".)
3. Adjust the value of the corresponding item to make the horizontal geometry of the
pattern look good.
4. Apply NTSC signal to adjust these value for NTSC horizontal geometry.
Table 3.5.2: The horizontal geometry adjustment OSD menu
OSD menu Default Value
HCEN-50
HSIZE-50
HPARA-50
HTRAP-50
HCNRT-50
HCNRB-50
HBOW-50
NX56-LA
Chassis Name
2008-05-19
Issued on
Updated on
32 Vertical slope(VS)
32 Vertical shift (VSH)
32 Vertical amplitude(VA)
25 Vertical zoom(VX)
32 S-correction(SC)
32 Vertical Scroll（VCS）
Description
32 Horizontal shift(HSH)
32 EW width(EWW)
32 EW parabola width(PW)
32 EW trapezium(TC)
32 EW upper corner parabola(UCP)
32 EW lower corner parabola(LCP)
32 Horizontal bow(HB)
Description
Adjust to right value
Adjust to right value
Adjust to right value
Adjust to right value
Adjust to right value
Adjust to right value
Serial No.
Page 9 of 12
Page
1.0
Version
Remark
Remark
Adjust to right value
Adjust to right value
Adjust to right value
Adjust to right value
Adjust to right value
Adjust to right value
Adjust to right value