UFC 4-021-02NF
27 September 2006
change 1, 23 October 2006
4-18.1.11 Understand the service plan. Manufacturers provide service and maintenance
programs. Some have premier service plans that provide feature upgrades and
enhancements on computer-based video recorders.
4-18.1.12 Consider how the images will be viewed, the number of monitors needed to
support the system, and how multiple camera scenes will be multiplexed onto a
common monitor (not every camera requires an individual monitor).
4-18.1.13 Determine if the system operators need zoom and focus capability from their
workstations.
4-18.1.14 Some camera installations may have difficult viewing conditions in terms of
exposure to a variety of lighting conditions from morning fog, to afternoon direct glare, to
evening shade or nighttime darkness. For these locations, ensure the camera has
backlight compensation features (typically a gain or sensitivity setting on the camera). In
rare cases, control of the backlight compensation setting may need to be made
available back at the Dispatch Center. This is an additional control signal that is not
often required, but could be a design requirement for specific cameras.
4-18.1.15 Specify auto-iris for outdoor applications and determine if interior lighting
conditions change such that it should be specified for interior applications.
4-18.1.16 CCTV cameras should not be installed in areas that may compromise
classified material (such as SCIFs) or where individuals expect a certain level of
privacy: restrooms, locker rooms, and private offices..
4-18.1.17 Ensure secure mounting for exterior cameras. Mount them on buildings or
other rigid structures whenever possible. Although rarely needed, gyro-stabilized lenses
are available for high vibration (high-wind) areas.
4-18.2
Considerations when implementing a CCTV system include:
4-18.2.1 The main concern with remote video monitoring is data security. Unless
adequately protected, it may be possible for a hacker to gain access to remote video
sites. To reduce the possibility of unauthorized access, user name and password
protection is an important feature that must be implemented. A firewall and video
encryption should also be employed to dramatically reduce the chance of unauthorized
entry into the system.
4-18.2.2 Use ample light. The most common reason for poor quality images is that the
light level is too low. Generally, the more light the better the images. With lighting levels
too low, images become noisy and blurry with dull colors.
4-18.2.3 Scene illumination should be even across the field-of-view of the camera, with
a target light-to-dark ratio of 4:1 and maximum light-to-dark ratio of 8 to 1 (marginally
acceptable).
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