Timing Chart - IBM T541 Service Manual

VIDEO
SYNC
Sync
MODE H / V
Polarity
+
H (Pixels)
1
–
V (Lines)
–
H (Pixels)
2
+
V (Lines)
–
H (Pixels)
3
–
V (Lines)
–
H (Pixels)
4
–
V (Lines)
–
H (Pixels)
5
–
V (Lines)
+
H (Pixels)
6
+
V (Lines)
+
H (Pixels)
7
+
V (Lines)
+
H (Pixels)
8
+
V (Lines)
+
H (Pixels)
9
+
V (Lines)
–
H (Pixels)
10
–
V (Lines)
–
H (Pixels)
11
–
V (Lines)
–
H (Pixels)
12
–
V (Lines)
+
H (Pixels)
13
+
V (Lines)

TIMING CHART

B
C
D
Total
Dot
Frequency
Period
Clock
( E )
25.175 31.468 KHz
800
70.0 Hz
449
28.322
31.468 KHz 900
70.0 Hz
449
25.175 31.469 KHz
800
60.0 Hz
525
30.24 35.00 KHz
864
66.67 Hz
525
31.5 37.50 KHz
840
75.0 Hz
500
36.0 35.156 KHz
1024
56.25 Hz
625
40.0 37.879 KHz
1056
60.3 Hz
628
50.0 48.077 KHz
1040
72.188 Hz
666
49.5
46.875 KHz
1056
75.0 Hz
625
57.2832 49.725 KHz
1152
74.55 Hz
667
65 48.363 KHz
1344
60.0 Hz
806
75 56.476 KHz
1328
70.0 Hz
806
78.75
60.023 KHz
1312
75.0 Hz
800
A
E
F
Video Blanking
Active Time
Time ( A ) ( B )
640 160
350 99
720 180
400 49
640 160
480 45
640 224
480 45
640 200
480 20
800 224
600 25
800 256
600 28
800 240
600 66
800 256
600 25
832 320
624 43
1024 320
768 38
1024 304
768 38
1204 288
768 32
- 4 -
Sync Back Front
Duration Porch Porch
( D ) ( F ) ( C )
96 48 16
2 60 37
108 55 17
2 34 13
96 48 16
2 33 10
64 96 64
3 39 3
64 120 16
3 16 1
72 128 24
2 22 1
128 88 40
4 23 1
120 64 56
6 23 37
80 160 16
3 21 1
64 224
32
3 39 1
136 160 24
6 29 3
136 144 24
6 29 3
96 176 16
3 28 1
Resolution
640 x 350
720 x 400
(TEXT)
640 x 480
640 x 480
640 x 480
800 x 600
800 x 600
800 x 600
800 x 600
832 x 624
(MAC)
1024 x 768
1024 x 768
1024 x 768