DIGITAL VIDEO SECURITY APPLICATION TIPS:
Color vs B/W
If the lighting conditions will
be in low light areas such as outdoors, dim restaurants, and
dim factories, then we suggest you use B/W. If the viewing
areas are well lit, then color would be acceptable.The reason
is that B/W cameras can produce image in low light condition
and color cameras need more light for a good image. B/W cameras
can also utilize the addition of “Infrared Illuminators”
to help them see in low light conditions. Color camera cannot
use infrared illuminators. If you need to see that a customer
is at a counter, but you are not concerned about the color
of his outfit then a B/W system would be adequate. If you
are concerned that this same person needs to be positively
identified and that could mean knowing the color of his outfit,
then a color system should be used.
Monitor Size
The bigger the monitor size - the better it will
be to view image details. If you only want to know about events
that occur, then a 5” B/W monitor would be OK, but if
you want to view more details and want better potential for
identification, then choose a larger monitor that is at least
12” or more.
Number of Cameras
If you want to view more than one area, and you will need
at least one camera per area. In some cases you may require
two or more cameras in an area. A general rule of thumb would
be that each camera should cover an area of no more than 30
ft if good identification is required. Cameras usually come
with cable that is about 63 ft. But the cable length can be
extended to go further to 300-400 feet with approved extension
cables.
Wired vs Wireless Systems
Wherever possible “wired video” should
be the first consideration as it produces a clearer image
and it is more reliable with less chance of interference.
Wireless has its’ advantages in situations when Video
Observation is only needed on a temporary basis or when the
prospects of getting a wire between two points is next to
impossible. Wireless is also excellent for simple observation
applications when high definition is not criteria and when
low cost solutions are the objective.
PIR Sensor explained
The small item mounted to the top of the camera is
a PIR (Passive Infrared Sensor). It is a sensor that looks
for, and detects the movement of objects by sensing heat sources.
The PIR detection feature is a user option. When the feature
is active the sensor will detect anything moving in front
of the camera and the monitor will chime and bring that camera
to full screen while at the same time triggering an output
relay that can activate a professional VCR to start recording.
This feature is great if you want notification and a recording
of activity in front of any camera. Typical applications include
unmanned lobby areas, receiving doors, back doors, restricted
areas, and at times when the business is closed.
Camera Types: Dome, Bullet
Dome cameras are commonly used when there is a need
to mount cameras to the ceiling. The benefit of the Dome camera
is that you cannot see where the internal camera is facing
and as such, it provides an illusion of increased surveillance.
Domes are less obtrusive and generally accepted in any environment.
Bullet cameras (commonly called Tube Camera or Lipstick Cameras)
are smaller and less noticeable but they are visually directional
in their viewing and they are weather resistant for outdoor
applications.
Time Lapse VCR
Video surveillance is only as beneficial as the person
watching it or the recording of the video for review at a
latter time. Watching an event take place on a monitor will
not be a benefit if you wish to enforce, prove or demonstrate
anything unless it is recorded. We recommend a Time Lapse
VCR that can record video over long extended periods of time
without the need to change tapes and manage the recorder.
Professional Time Lapse Recorders are not the same as consumer
VCR’s. Consumer VCR’s are not designed to operate
over long extended periods of time required for video surveillance.
Time Lapse recorders can be setup to record in different modes
that can capture up to 1280 hours of video before a tape change
is required.
Audio
Care and discretion must be considered when using
audio surveillance equipment especially when there is perceived
privacy. You should inquire regarding federal, state and/or
local regulations applicable to the lawful installation of
video and or audio recording or surveillance. Party consent
may be required.
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