Vivotek IP Surveillance, Обзор

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Chap.9 System Design
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9.1.2 Environmental Considerations
CCTV Cameras
Since customers tend to expect to keep the existing analogue CCTV cameras for the sake of lowering investments,
you may adopt a video server to help them easily migrate to IP surveillance.
Outdoor/Indoor
Outdoor applications for network cameras usually require the features of vandal- and weather-proof, and
conformation to the IP66-rated standard for protection against vandalism or weather damage. Furthermore, to cope
with very harsh temperature environments, a fan and heater is a must. In addition, the cameras should have an
auto-iris lens to protect them from damage caused by strong sunlight.
Light
The quality of the captured image is significantly influenced by light sources in the monitored area. For most of the
conditions you encounter, VIVOTEK provides different products to meet your specific needs as follows.
Day and Night
For outdoor applications where light changes significantly during daytime and nighttime, the true day and night
function (camera with a removable IR-cut filter together with IR illuminators) is required so as to maintain good
image quality constantly for 24 hours.
Low Light
A camera with better light sensitivity (low light performance) indicates that it can generate acceptable image quality
in low-lux environments. VIVOTEK’s full-range cameras provide fairly good low light performance.
Challenging Light
For such high contrast places as entrances, ATMs and loading areas, cameras with WDR can still cope with the
challenging light to generate identifiable image with ease.
Mounting
After deciding the shooting direction and the height for camera placement, you must find a suitable mounting kit for
places such as walls, ceilings, poles, roofs or corners to have your camera installed. VIVOTEK provides a variety
of mounting kits to facilitate your installation.
Power Outlet
You should check if there are power outlets nearby the locations of the cameras for easy access. If it is a concern,
a network camera featuring PoE or the addition of a set of PoE kit will easily help you solve this problem that
analogue camera cannot.
Wireless/Wired Connection
Wireless connection is often applied in a wide open space or where the decor requires high protection or no
Ethernet outlets provided. Without the cabling, you can greatly decrease the cost and get rid of the problem of
tangled cabling. Most of buildings now have Ethernet outlets as infrastructure, with which you can significantly
reduce the workload of cabling but the CCTV security must pay for.
Audio
When installing audio-enabled cameras, audio cables must be kept away from power cables and high-frequency
signal cables so as to reduce interference. In addition, microphones should be placed near the sound source and
away from speakers.
Bandwidth
The bandwidth capacity is another key point during video transmitting. Regarding the calculation formula of
bandwidth, please refer to the Chapter 6. If upgrade is needed, please consult with your local ISP.
Storage
There are many factors affecting storage requirements. For more information, please refer to Chapter 6.