whit3rd, thanks. Very useful info.

Apologies for the top post.

Mike

"whit3rd" wrote in message ...
On Jan 20, 6:44 am, wrote:
Hi all, I used WinDAS to adjust G2 on an overbright Sony F500R monitor, and want to learn about a few of the other registers,
especially 22-38 and the relationships between them (full dump copied below). Google was useless.

In general are these registers standard across monitor manufacturers?

Some names are familiar.
Your "G2" means the second grid of the CRT, and determines
the overall brightness (and needs correction often as the tube ages).
A 'readjustment' of a color monitor is potentially complex, it seems
like most things we used to do with screwdrivers are now 0-255 range
binary numbers, probably for one or several 8-bit DACs.

(about registers 28-33)
Red, green, blue blanking levels (the cutoff 'black' setting) might
have a 'center' value so one can start the adjustment procedure
at a neutral value (we used to center the ranges first, set G2 or
"screen" and go from there). The "max" might mean maximum
value of the voltage, not necessarily maximum integer in the
DAC register...

then when the 'zero' brightness values are set you adjust gains
of the video amplifiers, i.e. 'drive'
(registers 22...27)

Sizing and centering the screen with (104...107)

Pincushion and pincushion balance adjustments(108...109) are
for barrel distortion (or inverse barrel == pincushion)

Keystone (get this wrong and the rectangles come out as rhombuses)
(110...111)

REG# ** LABEL ** VALUE NOTES
1 ** G2 ** 115 Factory setting (139) caused overbrightness
2 ** DRV_ZERO_LEVEL ** 0
3 ** DRIVE_MIN ** 0
4 ** DRIVE_MAX ** 250
5 ** dummy4 ** SKIP
6 ** dummy5 ** SKIP
7 ** SRGB_CONT ** 225
8 ** SRGB_BRT ** 75
9 ** dummy8 ** SKIP
10 ** dummy9 ** SKIP
11 ** dummy10 ** SKIP
12 ** dummy11 ** SKIP
13 ** dummy12 ** SKIP
14 ** REG13 ** 2
15 ** REG14 ** 2
16 ** REG15 ** 0
17 ** OSD_ENLARGE_LIN ** 102
18 ** REG17 ** 35
19 ** REG18 ** 177
20 ** REG19 ** 37
21 ** REG20 ** 80
22 ** R_DRV_CONT_MIN ** 200
23 ** R_DRV_CONT_MAX ** 200
24 ** G_DRV_CONT_MIN ** 150
25 ** G_DRV_CONT_MAX ** 150
26 ** B_DRV_CONT_MIN ** 150
27 ** B_DRV_CONT_MAX ** 150
28 ** R_BKG_BRT_CENT ** 100
29 ** R_BKG_BRT_MAX ** 86
30 ** G_BKG_BRT_CENT ** 140
31 ** G_BKG_BRT_MAX ** 125
32 ** B_BKG_BRT_CENT ** 125
33 ** B_BKG_BRT_MAX ** 105
34 ** CONT_MIN ** 30
35 ** CON_MAX_BR_CENT ** 150
36 ** CON_MAX_BRT_MAX ** 115
37 ** BRIGHTNESS_CENT ** 125
38 ** BRIGHTNESS_MAX ** 170
39 ** R_USER_DRIVE ** 151
40 ** G_USER_DRIVE ** 139
41 ** B_USER_DRIVE ** 142
42 ** R_USER_BKG ** 128
43 ** G_USER_BKG ** 128
44 ** B_USER_BKG ** 128
45 ** REG44 ** 60
46 ** USER_COLOR_FLAG ** 2
47 ** H_FREQ ** 1078
48 ** COLOR_MODE ** 1
.....
100 ** SIGNAL_INDEX ** 17
101 ** V_BLK_WIDTH_MIN ** 115
102 ** V_BLK_WIDTH_MAX ** 115
103 ** REG102 ** 115
104 ** H_PHASE ** 149
105 ** H_SIZE ** 114
106 ** V_CENTER ** 148
107 ** V_SIZE ** 132
108 ** PIN ** 136
109 ** PIN_BAL ** 128
110 ** KEY ** 128
111 ** KEY_BAL ** 128
112 ** MOIRE_CANCEL_SW ** 0
113 ** MOIRE_LEVEL ** 0
.... and lots more...