Screen Specification Of Each Mode - Pioneer AVH-P6800DVD Service Manual

5

6. Screen specification of each mode

Actual OSD screen samples are showed inside of the thick frame in the chart below.
The numbers in the chart are the changed parts during adjustment in each screen (maximum value is showed in the sample).
The items are for design review and line adjustment.
I
Flicker adjustment mode
Setting item
Common reverse output center value
I
* Note1 : The contents of [COM DC, clock phase] should be reflected to the reverse output center reference value.
I
Line adjustment 1 mode
Setting item
Bright
RGB simultaneous contrast (SA0C [D0-7])
Common reverse output amplitude
adjustment value
R output DC offset (SA1A [D11-8])
G output DC offset (SA1C[D11-8])
B output DC offset (SA1E[D11-8])
Main Y contrast (SA0F[D5-0])
Sub Y contrast (SA13[D5-0])
• BRIGHT value is determined by the image quality setting table based on the user setting step and the common inverted
output amplitude adjustment value (COM AMPAJ).
The output of the monitor microcomputer terminal [DACDI] (Pin 107 in the case of AVH-P68xxDVD.) is controlled by this
brightness value.
Supplemental explanation 1) It should be noted that, even of the BRIGHT value is changed in the test mode, it will not
Supplemental explanation 2) In the test mode during monitor stand-alone operation, the user setting step is not reflected
Note 1... "Black density (=BRIGHT)" adjustment by the user is done only by controlling the common inverted output
amplification and it does not use the brightness of the double window IC.
Note 2... The content of BRIGHT and the RGB simultaneous contrast are the reference value (adjustable though) when
adjusting other items and they will not be stored in the E2PROM.
Note 3... It should be noted that the content of R(G/B) output DC offset, main Y contrast and sub Y contrast will be different
between the ones displayed (E2PROM written value) and the ones set in the register of double window IC.
(Because the relationship between the double window IC register value and the screen output value is not linear,
conversion by software is necessary.)
5
6
Adjustment
Display item
range
[0-255] COM DC
Adjustment
Display item
range
[0-255] COM DC
[0-255] CONTRAST
[0-255] COM AMP AJ
[0-15] ROUT BIAS
[0-15] GOUT BIAS
[0-15] BOUT BIAS
[0-63] RGB CNTRST
[0-63] CMP CNTRST
be reflected in the user setting step value.
in the calculation of the BRIGHT value.
AVH-P6800DVD/UC
6
7
Adjustment value
Write value
(DEC)
85
Adjustment value
Write value
(DEC)
150
168
150
8
8
8
28
25
7
8
A
B
C
D
E
F
141
8