Technical data

9-1
'---- ________________ ~llcha9~~1
98760 Diagrams .
Sweep
Tube Drive
A40
Reset
(Analog) Red
Hsync
Green
Vsync
Blue
Vblank
+75
Digital
Video
A75
+12
Alpha/Interface
A73
75R
+12
-12
+5
Data and Control
+2, +5 +12 ... _____ ......
Power
+5
+12
Alpha Data
Graphics Data
and
Control
Clock
and Control
A75 Digital
Video Board
P1
5
6
7
9
10
98760 Block Diagram
Typical Circuit
Between
P1 and P2 Pins
:::~:::
... A~nn_rJL ...
::: 4700
P
]
:::
...
Video
Drive
A42
RGB
Power
Supply
A50
9020
Base
CRT
Motherboard
P2
H Sync
User
Intensity Pot
V
Blank
User Intensity Pot
V Sync
+ 12
Volt Sense
From Mainframe
Use
Intensity Pot
RFI Filter Board 98760-66501