Archive for October, 2010
Compro IP 70 CCTV
1/3″ CMOS Megapixel sensor Day and night functionality with mechanical IR cut filter switching Built-in IR lamp with light sensor Supports real-time H.264, MPEG-4 and MJPEG compression (Triple Codec) Supports dual streams simultaneously Support 10x digital zoom Video resolution is up to 1280 x 1024 pixels Image frame rate is up to 30 frames under [...]
Read moreCCTV Tape vs. Digital Video Recorders
Tape vs. Digital Video Recorders There are two main ways to record video images that your CCTV cameras capture; they are analog tape and digital video recorders. The vast majority of analog video recorders use VCR tapes and either standard VCR’s to record the images or special security time-lapse VCR’s to record images for a [...]
Read moreCCTV systems IP Camera High Defination Recording
CCTV stands for Closed Circuit TV. CCTV uses one or more video cameras to transmit video images and sometimes audio images to a monitor, set of monitors or video recorder. The difference between CCTV and standard TV is that standard TV openly broadcasts signals to the public. CCTV is not openly transmitted to the public. [...]
Read moreMacBook Pro 256GB SSD upgrade experience
Choosing a drive There are a bewildering number of options out there. Budget, as always, dictates the combination of speed and size available. Size You may not need as much space as you think so even if you intend on a fresh install clean-up your current drive to get an idea of requirements. Remembering to [...]
Read moreWhat do the SNR and Loop Att. values indicate?
SNR is Signal to Noise Ratio (aka Noise Margin or Signal to Noise Margin) Relative strength of the DSL signal to Noise ratio. 6dB is the lowest dB manufactures specify for modem to be able to synch. In some instances interleaving can help raise the noise margin to an acceptable level. The higher the number [...]
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