41G3307
PS/2 8517 and 9517 Color Displays HW Maint Ref Jul 92 SA38-0053-00 PS/2 Display
Hardware Maintenance Manual,Vol 1
1.1.1 Display
Modes
Displays
receive separate red, green, and blue analog signals
through the signal cable (75 ohms impedance).Separate,
non-interlaced, horizontal and vertical synchronization
signals are also received through the signal cable.
The
polarity of the synchronization signals controls the modes
of operation. Modes of operation set vertical frequencies
to vary the maximum number of lines that can be displayed.The number of lines
displayed creates screen resolution. Each display can be
used in three to six operating modes.The modes are
dependent on the display and the computer system that the
display is connected to.The
polarities and operating characteristics of the four
primary modes are shown in the following table:
41G3307 PS/2 8517 and 9517 Color
Displays HW Maint Ref Jul 92
Table
1. 8517 Display mode characteristics
Mode
H
V
Resolution
Interlaced
1
+
-
738 x 362
No
2
-
+
738x414
No
3
-
-
656 x 496
No
4
+
+
1024 x 768
Yes
4
+
+
1024 x 768
No
5
-
+
1360 x 1024
Yes
Table
2. 9517 Display mode characteristics
Mode
H
V
Resolution
Interlaced
1
+
-
738 x 362
No
2
-
+
738 x 414
No
3
-
-
656 x 496
No
4
+
+
1024 x 768
No
5
-
+
1360 x 1024
Yes
Displays with only three operating modes
have mode 4 reserved. Displays with more than these four
modes use interlaced horizontal and vertical
synchronization signals to create additional modes.The 8517 display has
two mode 4s available; the program providing the mode
automatically selects one of them, depending on the
adapter in use.
The
IBM PS/2 Color Displays Test-Pattern Diskette examines the
mode configuration from the monitor and the type of
computer being used and displays the modes available for
the monitor.
Video input:
analog, direct-drive, 75 ohm, 0 to 0.7 V. CRT
faceplate: dark, antiglare (silica coated)
The functional characteristics depend on the operating
mode:
Both references agree on 8517 modes....
8517
MODE:
1
2
3
4
4
5
Horizontal deflection rate KHz
31.5
31.5
31.5
35.5
57.0
56.5
Vertical deflection rate
[Frames/s]
70.0
70.0
60.0
43.5
70.0
51.5
Horizontal Blanking time [ms]
5.72
5.72
5.72
5.35
4.41
4.50
Vertical Blanking Time [ms]
2.76
1.12
0.92
0.69
0.82
0.65
Vertical Addressability [lines]
362
414
496
768
768
1024
Interlace ratio
1:1
1:1
1:1
2:1
1:1
2:1
9517
MODE:
1
2
3
4
5
N/A
Horizontal
deflection rate KHz
39.5
39.5
39.5
58.0
58.0
Vertical
deflection rate [Frames/s]
88.0
88.0
75.0
72.0
53.0
Horizontal
Blanking time [ms]
4.56
4.56
4.56
4.40
4.38
Vertical
Blanking Time [ms]
2.26
0.89
0.74
0.67
0.65
Vertical
Addressability [lines]
362
414
496
768
1,024
Interlace
ratio
1:1
1:1
1:1
1:1
2:1
NOTE:
41G3307 PS/2 8517 and 9517 Color Displays HW Maint Ref
Jul 92 has different values for the 9517 Modes.
Note: There are
two mode 4s available; the program providing the mode
automatically selects one of them, depending on the
adapter in use. If the display is moved to a display
adapter with a higher resolution, it may have to be
serviced for adjustments to the higher mode.
Mode
Selection:The
mode for setting up display is
determined by modes supported by the display adapter
cards.