Jd1s\
______
_
~
945423-9701
___
1.2.3 DISPLAY UNIT. The display unit houses a 30S-millimetre (12-inch) cathode-ray tube (CRT)
monitor, power supply, control logic, audible alarm logic, and two controls to allow the operator to
adjust the brightness
of
the display and the volume
of
the audible alarm.
1.2.3.1 CRT Monitor. The CRT monitor
is
a 30S-millimetre (l2-inch) monitor with a selectable
capacity
of
12
or
24 lines
of
information containing 80 characters each. The monitor produces
alphanumeric and graphic display characters using the television raster scan technique. Table
1-1
lists the principle display characteristics.
Functionally, the display
is
characterized by the following features:
• Alphabetic, numeric, and special (+,
-,
*, etc.) character set
• Katakana character set (Japanese Katakana model only)
• Graphic character set (1920-character display)
• 960-
or
1 920-character formats
• Software-selectable cursor blinking
• Gothic font upper- and lower-case characters
• Dual intensity display
(not
on Japanese Katakana model).
1.2.3.2
Power Supply. The power supply in the display unit consists
of
a power transformer
mounted on the display unit base and regulators on the logic board mounted at the rear
of
the
display unit.
Table 1-1. VDT Display Characteristics
960 Characters
1920 Characters
Description
50Hz
60Hz
50 Hz
60
Hz
Character Matrix - Columns
5
5 5
5
- Rows
7
7 7
7
Character Block - Columns
7 7
7 7
-Rows
16
16
10 10
Frame (refresh) Rate
50
60 50 60
Lines
of
Characters
12 12
24 24
Character Rate (Dot rate divided
by dots per character
in
MHz.
1.57 1.57 1.57 1.57
Characters per row
80 80 80 80
Video Display Horizontal Size
Millimetres - tolerance ±6.35
215.90 215.90
215.90 215.90
(Inches - tolerance ±0.25)
(8.50)
(8.50) (8.50)
(8.50)
Video Display Vertical Size
Millimetres - tolerance ±6.35
139.70
139.70 139.70
139.70
(Inches - tolerance ±0.25)
(5.50) (5.50)
(5.50)
(5.50)
1-5
Digital Systems Division
----_
..
__
.-.
-------------------
To Next Page
Loading...
Need help?
General
