2.10.6
Control Keyboards
Control and programming keyboards shall be supplied for the video switcher
at the security center, and control keyboards shall be supplied for any
control/monitoring stations as shown. The control keyboard shall provide
the interface between the operator and the CCTV system, and shall relay
commands from the operator to the switcher CPU. The keyboard shall provide
control of the video switcher functions needed for operation and
programming of the video switcher. Controls shall include, but not be
limited to: programming the switcher, switcher control, lens function
control, pan/tilt/zoom (PTZ) control, control of environmental housing
accessories, and annotation programming. If the switcher CPU requires an
additional text keyboard for system management functions, the keyboard
shall be supplied as part of the video switcher.
2.10.7
Accessory Control Equipment
The video switcher shall be equipped with signal distribution units,
preposition cards, expansion units, cables, software or any other equipment
needed to ensure that the CCTV system is complete and fully operational.
2.10.8
Connectors for Video Switcher
Video signal input and output shall be by BNC connectors.
2.10.9
Video Annotation
Video annotation equipment shall be provided for the video switcher. The
annotation shall be alphanumeric and programmable for each video source.
Annotation to be generated shall include, but not be limited to: individual
video source identification number, time (hour, minute, second) in a 24
hour format, date (month, day, year), and a unique, user-defined title with
at least 8 characters. The annotation shall be inserted onto the source
video so that both shall appear on a monitor or recording. The lines of
annotation shall be movable for horizontal and vertical placement on the
video picture. The annotation shall be automatically adjusted for date.
Programmed annotation information shall be retained in memory for at least
4 hours in the event of power loss.
2.11
VIDEO MULTIPLEXER
**************************************************************************
NOTE: The designer will determine whether simplex
or duplex operation is required and will select the
appropriate sentence below.
**************************************************************************
The video multiplexer shall be a multi-channel record and playback system
with the capability of monochrome and color real time multi-screen viewing.
Electronic components, sub assemblies, and circuits of the multiplexer
shall be solid state. The multiplexer, using time division multiplexing,
shall permit up to 16 camera inputs to be recorded simultaneously on a
single video cassette recorder (VCR). All 16 camera inputs shall be
capable of being viewed on a video monitor either live or recorded. [The
multiplexer shall allow for viewing of either live video or input from the
VCR (Simplex Operation)] [The multiplexer shall allow for simultaneous
viewing, recording playback, and multiplexing (Duplex Operation)]. The
inputs shall be capable of simultaneous viewing on the monitor or full
screen individually and in other multi-screen modes such as 2x2, 3x3, 4x4
SECTION 16751A
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