to the represented areas with a minimum of training. Other types of graphic
displays, particularly screen and slide systems, although relatively cheap
and easily updated, very often fall prey to mechanical problems due to long
periods of inactivity.
126.96.36.199 Light-Emitting Diode (LED) Displays. This small, bright lamp
provides extremely high performance characteristics and basic colors for
alarm reporting and display. The arrangement of LED displays is usually
either in grid (tabular) or map (and combinations) format, and conventional
acceptance of color relates red to alarm, green to secure, and amber to
access. Trouble indications are reported either as blinking alarm or secure
indicators. The most popular of these displays depicts the protected
facility in outline graphic form on a wall map up to 40 inches by 80 inches
in size. It provides three colored LEDs for each protected area, which
permits monitoring personnel to easily direct response forces to the
specific area of alarm and adjacent areas as new intrusions are detected.
188.8.131.52 Mobile Displays. The mobile display is an alarm annunciation
device that can be remote from direct wire connection to the operating
alarm system control center. The system uses microwave, radio frequency,
or other transmission techniques to provide display information to the
remote unit. Very popular items for large facilities requiring vehicular
patrols, these devices indicate alarm information either with alphanumeric
or map display indications. Particular remote alarmed zones can be
responded to quickly, since information is automatically passed to the
remote or mobile units.
184.108.40.206 Closed-Circuit Television (CCTV) Monitor Displays. The CCTV system
may also be used for alarm display functions, particularly where immediate
assessment of areas out of direct view of security personnel is required.
These components can provide the view in response to alarm detection.
Connections are required between an alarming video switcher and the IDS.
CCTV images may also be used as an intrusion detection sensor if the change
of image is indicative of intrusion. This motion or image detection is not
reliable in views which change due to expected movement (i.e., windblown
objects) or rapid changes in lighting or contrast (Section 4, paragraph
titled "CCTV-Motion Detection").
8.5. Conclusions. Navy facilities housing critical assets where IDS is
deemed appropriate will require comprehensive analysis, design, and system
applicable to their unique security needs. Figure 53 provides a graphic
example of how the various security subsystems are integrated at the command
and control center for definitive response by the security organization.