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What is a DVR?

A DVR is a Digital Video recorder.

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What types of compression and transmission technology are available in a DVR?

Software compression takes the video data coming into the system and encodes it just prior to writing the information onto the hard drive. Under hardware compression the information is encoded with the ASIC chip as soon as the video is received by the unit.

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How do I choose a DVR?

You should choose the DVR for your system by considering what it is you need to accomplish, how much information you need to store and for how long, what the environment is like, and required image quality.

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What is image size and image resolution?

Image size is measured in horizontal and vertical dimensions as measured in pixels. For example, 640 X 480 means the image is 640 pixels across and 480 pixels high. (Please note that size can be a true recorded size or a computer enhanced size). While this measurement provides the size of the image, the resolution refers to the detail contained within the image and is listed as lines of resolution. These lines are the number of lines that can be individually differentiated within the image. The greater the number of lines, the more details that are identifiable in the image. An image recorded at a full 640 X 480 size may have a resolution up to 500 horizontal lines X 480 vertical lines, while an image size of 320 X 240 may have approximately 280 horizontal and 240 vertical lines of resolution. Also take into consideration that a DVR that records at 320 X 240 and then uses a computer formula to enhance the image to 640 X 480 is not increasing the resolution of the image - only the size. 320 X 240 (VHS quality, 640 X 240 (SVHS quality), and 640 X 480 (DVD quality) are all available from PSCS.

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What does DVD Quality mean?

DVD quality means your system records images at 640x480 with DVD quality resolution of 500HTVL X 480VTVL.

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What is FPS?

Frames per second the number of frames a video card in a DVR captures. Usually stated as a maximum rate. Each frame consist of two fields, and, in some instances, fps may be stated using fields per second providing higher rates. FPS can be affected by image quality, CPU load and software settings.

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What is Bandwidth and how does it affect my DVR?

Bandwidth is the amount of network pipeline a DVVR requires for transmission of information, either video or audio. Bandwidth requirements will vary depending on image complexity and size and how many "users" are trying to retrieve information simultaneously.

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Can I remotely connect to my DVR?

Yes, you need the DVR's Remote software to make remote connections.

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 What information do I need to set up Remote Agent?

You will need to know the IP number of the DVR, username and password.

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