Zenith H27G48S Service Manual - Factory Menu
FACTORY MENU
3828VD0171G
2-12
DIGITAL FCS - FACTORY MENU
227-F R-CUTOFF NTSC:
Red cutoff control is used
to adjust cut-off voltage at the cathode. Range:
0-255d.
228-F G-CUTOFF NTSC:
Greencutoff control is
used to adjust cut-off voltage at the cathode.
Range: 0-255d.
229-F B-CUTOFF NTSC:
Blue cutoff control is used
to adjust cut-off voltage at the cathode. Range:
0-255d.
230-F OSD CONT NTSC:
OSD amplitude can be con-
trolled by OSD contrast with a range of 12dB.
Default value is 7d.
231-F AC BLK LEV NTSC:
Black level for AC cou-
pling with 3bit DAC. Default value is 0.
232-F BRI NTSC:
Default value is 0 (internal
brightness control with grey scale tracking).
233-F DISV NTSC:
RGBVideo signal on/off. De-
fault value is 0 (enabled).
234-F FPOL NTSC:
Default value is 0(Negative
feedback polarity selected, No external DAC volt-
age outputs).
235-F DEPTH_PB NTSC:
Produces an ultra black
level during blanking and output clamping which
is the most negative signal at the signal output
pins. Default value is 1.
236-F APCONSVGA
FACTORY MENU 2
NTSC VIDEO ADJUST
001-F AUX OFFSET:
Black levelsettings for com-
posite video and S-Video inputs. Depends of RF
sub brightness adjustment. Max value of 64d and
default value of 32d.
002-F YUV OFFSET:
Black levelsetting for Y Pr
Pb input. Depends of RF sub brightness adjust-
ment. Max value of 64d and default value of 32d.
003-F MAX CONTRAST:
Max value of 64d and default
value of 40d for 27"and 33d for 32" for NTSC video
format.This value is used in one formula to
limit the max contrast level.
004-F MAX BRIGHT:
Max value of 64d and default
value of 55d for 27" and 64d for 32". This value
is used in one formula to limit the max bright-
ness level.
005-F SUB COLOR:
Max value of 63d and default
value of 32d.This value is used in one formula to
limit the minimum color level.
006-F MAX COLOR:
Max value of 63d and default
value of 55d for 27" and 47d for 32". This value
is used in one formula to limit the maximum color
level.
007-F RF SUB_TINT:
Max value of 15d and default
value of 7d. This value is used in one formula to
center the tint level of RF input.
008-F AUX SUB_TINT:
Max value of 15d and default
value of 7d. This value is used in one formula to
center the tint level of composite video inputs.
009-F YC SUB_TINT:
Max value of 15d and default
value of 7d. This value is used in one formula to
center the tint level of S-Video inputsWHITE
BALANCE RESET.
010-F NTSC CUT:
Max value of 254d and default
value of 127d. This register is used in one for-
mula to reset the red, green and blue cutoff
values of RF, Composite video and S-Video inputs
before G2 setup and white balance adjustment.
011-F NTSC GAIN:
Max value of 254d and default
value of 127d. This register is used in one for-
mula to reset the red, green and blue gain values
of RF, Composite video and S-Video inputs before
G2 setup and white balance adjustment.
012-F SVGA CUT OFFSET:
Max value of 254d and
default value of 127d. . This register is used in
one formula to reset the red, green and blue
cutoff values of SVGA inputs before G2 setup and
white balance adjustment.
013-F SVGA GAIN OFFSET:
Max value of 254d and
default value of 127d. This register is used in
one formula to reset the red, green and blue gain
values of SVGA input before G2 setup and white
balance adjustment.
014-F YPrPb CUT OFFSET:
Max value of 254d and
default value of 127d. . This register is used in
one formula to reset the red, green and blue
cutoff values of Component inputs before G2 setup
and white balance adjustment.
015-F Y PrPb GAIN OFFSET:
Max value of 254d and
default value of 127d. This register is used in
one formula to reset the red, green and blue gain
values of component inputs before G2 setup and
white balance adjustment.
DEFLECTION OFFSETS
016-F H_SIZE OFFSET
017-F H_POSITION OFFSET
018-F V_SIZE OFFSET
019-F V_SCROLL OFFSET