Contractor shall perform a field survey, including testing and inspection
of all existing video equipment and signal lines intended to be
incorporated into the CCTV system, and furnish a report to the Government
as part of the site survey report as defined in paragraph "Group II
Technical Data Package." For those items considered nonfunctioning,
provide (with the report) specification sheets, or written functional
requirements to support the findings and the estimated cost to correct the
deficiency. As part of the report, the Contractor shall include the
scheduled need date for connection to all existing equipment. The
Contractor shall make written requests and obtain approval prior to
disconnecting any signal lines and equipment, and creating equipment
downtime. Such work shall proceed only after receiving Government approval
of these requests. If any device fails after the Contractor has commenced
work on that device, signal or control line, the Contractor shall diagnose
the failure and perform any necessary corrections to the equipment. The
Government is responsible for maintenance and repair of Government
equipment. The Contractor shall be held responsible for repair costs due
to Contractor negligence or abuse of Government equipment.
3.1.3
Enclosure Penetrations
All enclosure penetrations shall be from the bottom unless the system
design requires penetrations from other directions. Penetrations of
interior enclosures involving transitions of conduit from interior to
exterior, and all penetrations on exterior enclosures shall be sealed with
rubber silicone sealant to preclude the entry of water. The conduit riser
shall terminate in a hot-dipped galvanized metal cable terminator. The
terminator shall be filled with an approved sealant as recommended by the
cable manufacturer, and in such a manner that the cable is not damaged.
3.1.4
Cold Galvanizing
All field welds and brazing on factory galvanized boxes, enclosures, and
conduits shall be coated with a cold galvanized paint containing at least
95 percent zinc by weight.
3.1.5
Interconnection of Console Video Equipment
The Contractor shall connect signal paths between video equipment with
RG-6/U coaxial cable. Cables shall be as short as practicable for each
signal path without causing strain at the connectors. Rack mounted
equipment on slide mounts shall have cables of sufficient length to allow
full extension of the slide rails from the rack.
3.1.6
Cameras
The Contractor shall install the cameras with the proper focal length lens
as indicated for each zone; connect power and signal lines to the camera;
set cameras with fixed iris lenses to the proper f-stop to give full video
level; aim camera to give field of view as needed to cover the alarm zone;
aim fixed mount cameras installed outdoors facing the rising or setting sun
sufficiently below the horizon to preclude the camera looking directly at
the sun; focus the lens to give a sharp picture over the entire field of
view; and synchronize all cameras so the picture does not roll on the
monitor when cameras are selected. Dome cameras shall have all preset
positions defined and installed.
SECTION 16751A
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