PDP11 PeripheralsHbk 1972 - Trailing-Edge

4.4 POINT PLOT DISPLAY VR14
The VR14 is a completely self·contained CRT display with a 6.75 x 9-inch viewing
area in a compact 19·inch package. The VR14 requires only analog X and Y posi·
tion information with an intensity pulse to generate sharp, bright point plot displays.
Except for the CRT itself, the unit uses all solld state circuits with high
speed magnetic deflection to enhance brightness and resolution. The intensity
pulse may be time multiplexed or gated by a separate input to allow the screen to
be timeshared between two inputs. The display unit is available in rack·moun·
table or stand alone models. !
The VR14 is interfaced to the UNIBUS and controiled through the AAl1·0 digj·
tal/analog conversion subsystem (See Chapter 9).
A two·color display (VR20) is also available. It is used with the Mll·E and AAl1-
D d/a conversion SUbsystems.
4.4.1 Specifications
Physical:
Spot Size:
Jitter:
Repeatabi lity:
Gain Change:
Temperature Range:
Relative Humidity:
Height 10 112 in.
Width 19 in.
Depth 17 in.
Weight 751bs.
Viewable Area 6·3/4 X 9 in.
::::::20 mils inside the usable screen area at a bright·
ness of 30 foot·lamberts.
:::; ± 112 spot diameter
:::; ± 1 spot diameter (Repeatability is the deviation
from the nominal location of any given spot)
From a fixed point on the screen, less than ± 0.3
percent gain change for each ± 1 percent line voltage
variation.
0° to 50° C operating
10% to 90% percent noncondensing
VR 14 POINT PLOT DISPLAY
57