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1.1 INTRODUCTION
The VR14 and VR17 are completely self-contained CRT
display monitors that require only analog
X-
and Y-position
information and an intensity input, to generate sharp,
bright displays. The VR14 and VR17 are electrically
identical. The VR17, however, has a larger display screen
(17 inches diagonal) than the VR14 (12 inches diagonal).
This necessitates a correspondingly larger enclosure, and a
CRT support bracket for the VR17. Except for the CRT
itself, both VR14 and VR17 are composed of fully solid
state circuits, utilizing high-speed magnetic deflection to
enhance brightness and resolution. The inputs for the
X-
and Y - deflection may be balanced or single ended, bipolar
or offset, and positive- or negative-going without any
modification to the VR14/VR17.
The VR14 and VR17 come in several configurations, listed
in Table 1-1.
Table 1-1
VR14 and VR17 Configurations
Designation
Mounting
Power
Light Pen
Option
VR14-0
Rack
115V
No
VR14-A
Rack
230 V
No
VR14-B
Rack
100V
No
VR14-C
Table
115V
No
VR14-D
Table
230 V
No
VR14-E
Table
100V
No
VR14-LC
Table
115 V
Yes
VR14-LD
Table
230 V
Yes
VR17-LC
Table
115 V
Yes
VR17-LD
Table
230V
Yes
The VR14 versions without the light pen option contain a
W682 Intensity Control Circuit Board and a G838 Fault
Protection Circuit Board, as well as a front panel
CHANNEL switch which operates with the W682 board. In
CHAPTER
1
GENERAL INFORMATION
1-1
this variation, intensity pulses may be time multiplexed or
gated by a separate input to allow the screen to be
timeshared by two inputs.
The VR14/VR17 versions with the light pen option
(VR14-LC, VR14-LD, VR17-LC, VR17-LD) do not have
this timesharing capability nor channel selectivity. They
contain a W684 Intensity Control Circuit Board in place of
the W682, and a G840 Light Pen Amplifier in place of the
G838. The G840 circuit board, however, contains the fault
protection circuitry of the G838 board.
1.2 SPECIFICATIONS
VR14/VR17 specifications are as follows:
Physical:
Height
Width
Depth
Weight
Viewable
VR14
10-1/2 in. (267 mm)
19 in. (483 mm)
17 in. (432 mm)
75 lb (34 kg)
VR17
15 in. (381 mm)
21-1/2 in. (546 mm)
27 in. (686 mm)
85 lb (39 kg)
Area
6-3/4 in.
X
9 in.
8-1/4 in.
X
11 in.
(171.45
X
228.6 mm) (210
X
280 mm)
VR14 and VR17
Spot Size:
<
20 mils inside the usable screen area at a brightness of
30 fL
Jitter:
<
±1 /2 spot diameter
Repeatability:
<
± 1 spot diameter
(Repeatability is the deviation from the nominal loca-
tion of any given spot)
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