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Video Surveillance FAQs
What does a basic camera recording system comprise of?
Typically a basic camera system comprises of a selection of analog or IP cameras, a Digital Video Recorder (DVR) or Network (IP) Video Recorder (NVR), powers supplies, transformers and Category-5 cabling.
What kind of cameras do I need?
As indicated above, there is a large selection of cameras one can use for effective surveillance and generally the environment is the primary determining factor. For example, dome cameras are generally used for indoor applications due to their aesthetic appeal; infra-red type cameras might well be used in an outdoor application where light is limited during the night hours etc.
Aside from the obvious differences between Black/White and Color cameras, what other advantages would there be in installing color cameras?
Color cameras used to be very expensive however with the advances in technology, color cameras are now the standard in security cameras. Black/White cameras yield better resolution particularly in the dark and are better for applications with low-light condition.
I've heard about hidden cameras, are there any advantages in using them?
One of the large advantages of a camera system has always been the preventative element of deterring criminals from perpetrating the building/premises. Using hidden (covert) cameras has advantages in areas where the aesthetics of a dome camera would not be appropriate or where incidents have reoccurred internally warranting appropriate disciplinary action.
I've heard about cameras with Infra-Red capabilities. Is that something I need?
One may consider using a camera equipped with an infra-red capability in places such as warehouses, store rooms or server rooms where there is no light or very low light. Similarly, with outdoor applications such as car porches, verandas, exterior corridors, passage ways and balconies that have no or little light during night hours.
Is there a downside in wireless systems over a hardwired system?
The general consensus is that wireless systems are still not considered anyway near as reliable as wired systems. The wireless industry is doing a lot to improve transmission and receiving of wireless signals, but there still remains room for improvement in reliability - especially in areas that have steel structure work and others that are affected by fierce weather conditions.
What is the ideal angle for a lens to cover?
As cameras are normally installed at corners, the ideal angle should be 90 degrees. Most cameras come with a 3.6 mm lens which gives you close to 90 degrees coverage. Of course if you need wider coverage, you can select 2.5 mm lens which should give you 100 degrees viewing angle.
When would I consider using a Pan/Tilt/Zoom (PTZ) camera?
A PTZ camera is typically used for perimeter surveillance in a commercial environment. PTZ cameras might be used as a backup for parking facility staff when providing their patrons with added security. PTZ cameras can revolve and be maneuvered to cover maximum real estate.
Do I need a designated DVR system or can I use recording software on my office PC?
We do not recommend using your office PC to run your video management software. This is for a number of reasons. Probably the most prominent reason is that a DVR or NVR should be designed and dedicated to your video recording and management system only. The components that are used for these systems have been tested to guarantee compatibility, reliability and stability. Your video system is a mission critical system, you cannot afford to install the software on an office PC that has not been tested and proven to be reliable. Of course if properly specified and planned we can utilize customer provided hardware for video management software solutions.
Can I view my camera surveillance over the internet?
Nowadays, even the most basic of hybrid/networked DVR systems are accessible remotely. In fact one can view and manage ones system from a PDA or laptop provided that the DVR is connected and configured to a hi-speed internet connection. Monthly ISP (Internet Service Provider) subscriptions are nominal and are well worth the investment involved in remote ma .
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