(4) Mount monitors in a frame for mounting in a [480 mm19 inch
rack] [desk top console].
(5) Two [228] [_____] mm [9] [_____] inch diagonal monitors shall
be dually mounted in the [rack] [console]. Protect monitors from
circuit overloads by fuse or fuses in the power source line.
Power source line fuses shall be mounted in finger-operated
extractor fuseposts. Fuseholders shall be located in a readily
accessible position.
c.
Video and signal input
(1) Monitors shall operate with video input requiring a one Vp-p
nominal composite video signal switchable to either loop-through
or internal 75-ohm terminating impedance.
(2)
Signal input shall be UHF or BNC connectors.
2.4.17.6
Ancillary Equipment
Equipment shall consist of the items specified below.
a.
Video date/time generator: Generator shall insert the year,
month, day, hour, minute, and second information on the video
signal applied to the input. Display shall be capable of
character heights adjustable from 5 to 15 percent of picture
height. Date/time generator shall automatically display proper
number of days in each month and automatically compensate for leap
years. Provide looping inputs to prevent picture loss when the
generator is turned off or fails. Operator adjustments shall
include size, horizontal and vertical position, brightness, and
selection of horizontal or stacked format. Position controls
shall permit date/time display information to be located any place
within the video picture. The horizontal or stacked selection
shall allow the time numerals to be placed beside the date
numerals or time above the date. Performance requirements shall
be as follows:
(1) Character format: Seven-bar matrix, white with black
outline. Zoom size control, 2:1 aspect ratio, height 5 to 15
percent of picture height;
(2)
Timing accuracy:
Power line accuracy.
No cumulative error;
(3)
Standby:
Preserve timing up to 10 minutes;
(4) Video input: Looping. Passive circuit to provide flat
response to 10 MHz with no deterioration of color or monochrome
signals. Random or positive interlace. Composite video;
(5)
Video connectors:
BNC or UHF; and
(6) Mounting: Generator shall be equipped to allow mounting in a
[19-inch equipment rack] [desk top console].
b.
Video sync generator: Generator shall operate at a frequency of
31.5 kHz with integrated circuitry for counting and timing
functions. Generator shall have its own internal crystal
SECTION 13703N
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