Commercial Security Camera System Installation Sacramento
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Mr Surveillance (916) 550-4386
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Digital Video Recorder Installation
What features must i look for in a CCTV Dvr (DVR)?
All DVRs are not made equal! There are numerous factors that are critical to consider when purchasing a DVR, particularly when comparing price. The most important factors to look at include the number of cameras supported, feet per second (fps), compression technology, harddrive space, network connection / remote viewing capability, motion detection, scheduling, and skill to save video and audio to a CD or memory stick. You should also look for basic and comprehensive search capabilities (check out our ‘Smart Search’ technology) and audio support. The setup and user interface should be straightforward to operate and intuitive. The price range is different from as little as $300 for a basic 4 camera input DVR approximately $5000 for a 64 camera input real time H.264 DVR with 6 terabytes of hard disk storage!
What is FPS?
The frames per second (fps) relates to how many pictures the DVR will record in the second. Real time recording is around 30 fps on each camera. To calculate the fps per camera go ahead and take total fps in the system and divide it from the number of video inputs. As an example, a 60 fps digital video recorder with 4 video inputs would cause about 15 fps per camera. We’ve got the technology has finally reached the point now where real-time recording is affordable. If you’re recording cash registers or something similar then you should definitely purchase real time recording.
What size a hard drive do I need?
The amount of harddrive space is very important as it will limit the number of days of recording you can store before the system has to start recording over the oldest video. Each DVR may have its storage capacity classified by the specifications. However, this calculation is just a rough estimate as there are many factors which affect hard drive use. One of the most critical factor is the compression format utilised by the DVR (for more info on compression formats click this link). But also the type of cameras which might be connected to the DVR make any difference (specifically the chip size and determination) and also the features which can be selected on the DVR. The use of the scheduling or motion detection features or tune along the frame rate that will extend the storage capacity with the unit. Even the field of view (what you are recording) will modify the storage capacity – the more complex the image, the greater hard drive space it will require to capture the complexness.
What is the difference between a PC-based DVR as well as an Embedded DVR?
A PC-based dvr is basically a personal computer that is modified with hardware and software to work as a DVR. An embedded dvr is a machine that is manufactured specifically to be effective as a DVR. In embedded DVRs there is typically one circuit board with software burned to the chip.
There had been significant differences in features between your PC-based and the embedded machines. But recent advancements from the embedded DVR technologies the differences are becoming less. The advantages of an embedded digital dvr is that they are extremely stable and reliable since they contain fewer parts. The program is often written in basic machine code or Linux code which tends to be more stable than Windows software. The advantage of a PC based digital video recorders is that they are easier to interact with as you use the on-screen menus plus a mouse (as opposed to embedded that you just interact with more like a VCR – via buttons). And you also tend to have more features and choices on the PC-based machines.
So how exactly does a CCTV dvr work?
A CCTV dvr (or “DVR” for short) is essentially a computer that saves security video images into a hard drive. Most security cameras in these days capture an analog picture. The DVR converts from analog signals to digital and then compresses it.
Mr Surveillance in Sacramento (916) 550-4386
Many cameras may be connected to one DVR. DVRs generally have 4, 8, 16, or 32 camera inputs. The DVR will help you view all of these images at once or one at a time, causing all of the video is saved for the hard drive. Additional quads, switches, or multiplexors are certainly not required.
Are security digital video recorders difficult to install?
By no means. You simply plug the cameras in the back of the unit. For the PC-based: Plug in the monitor, power, mouse and keyboard – just like a regular computer. You’ll receive instructions on how to set up the machine using your shipment.
What comes with the DVR?
Most of our DVRs come standard with an 120 gig hard drive (unless otherwise noted). They also include the software (for setup, remote and local viewing), power cord, and documentation. PC-based DVR’s also come with the mouse and keyboard. You need to simply add the cameras, whatever cable you’ll need, and a monitor. For embedded machines you may use a TV set or security monitor. For PC-based machines you want a standard computer monitor. Also, we’ve on-site technical support available at no additional cost.
Why doesn’t the pc monitor come with the PC-based Digital Video Recorders?
We don’t supply the computer monitor with all the DVR because frankly you can find one cheaper and much easier locally. Large computer stores including Best Buy or Comp USA sell these monitors practically at cost. And due to their heavy weight, they’re very expensive to ship (and susceptible to damage). Also, we found that many of our customers have spare computer monitors available.
How do you see pictures from the remote site?
You can see the camera video over the internet using a modem that’s slow but can display A couple of frames every 5 seconds. Better is often a DSL or cable modem connection which may generally display 1 frame per second. When viewing remotely, the refresh minute rates are restricted by the communications medium (your internet connection speed). When playing back locally or viewing, the display would depend of the unit’s frame rate (fps). You might need a static ip address accessible to assign to the DVR (more details on this in your documentation).
What is ‘Smart Search’?
Our PC-based DVRs come standard with smart search capability. This enables you to highlight one area of a captured image and check out changes just to that area. For example, if an item is stolen from a desk… you can go to a moment in the video in which the item is still on the desk, then highlight the area around the item and appearance automatically through the video for the moment in time when that exact area changes, that is certainly precisely when the item is taken away and then view that part of the video. Extremely Effective!
Should I purchase the card and software and create my own digital video recorder or get one pre-built?
It is much better to acquire a DVR system pre-built instead of build one yourself. There are numerous compatibility issues with DVR cards and related software. They’re very sensitive to the type of motherboard in the computer, the cpu, the memory, the video card is important! We had to test a variety of configurations to find one that worked reliably. You additionally don’t want to be running every other software on the computer that your particular DVR is running on so that you need a dedicated computer anyway. We now have had so many customers phone us that have had problems installing cards in their own personal systems that we won’t even sell the cards separately anymore.
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