Learning Center - Knowledge for video surveillance system

Lens plays an important role for high quality image in a surveillance system, especially in the mega-pixel IP world. The performance of IP camera highly relies on the lens quality. Normally, conventional IP cameras utilize fixed lens, or vari-focal lens to provide standard quality images. For high-end market, some manufacturers developed and launched IP cameras equipped with auto-Iris and P-Iris lens...  Learn More >

According to the survey, 30% of users will not change the default username and password for their IP cameras. Before accessing the majority of IP cameras, input the default account information is mandatory. Typically, you can find the default username and password from either user-manual or the product sticker on the product...   Learn More >

In 2008, Sony, Bosch, Axis companies established an organization called Open Network Video Interface Forum (ONVIF). ONVIF aims to solve the IP surveillance systems interoperability between products regardless of manufacturers. It is committed to make a common standard to accelerate the adoption of IP surveillance system...   Learn More >

Back focus refers to the "focal flange length". This is the distance between the rear lens element and the image sensor (CCD/CMOS). Back focus is only applicable to cameras (i.e. network box camera) with detachable lenses, consumer-level cameras don't support back focus adjustment...   Learn More>

Lens plays an important role for high quality image in a surveillance system, especially in the mega-pixel IP world. The performance of IP camera highly relies on the lens quality. Inappropriate lens may cause poor picture performance because user didn't choose a correct lens for IP cameras. Before purchasing the IP camera, you need to conduct the initial survey...   Learn More >

Video surveillance is moving toward megapixel resolution for HD video monitoring. Today, you can find wide selection of megapixel resolution cameras which adopts analog technology or digital IP technology. Currently, the megapixel resolution formats including 1.3 megapixel, 2 megapixel, and 3 megapixel...   Learn More >

Wide dynamic range technology can allow camera capture good effect pictures even under challenging light conditions. The WDR can maintain proper image brightness and exposure, also the contrast and ensures image clarity. Both analog and digital IP camera offer this function...   Learn More >

CCTV camera can capture images then transfer uncompressed analog video signal over coaxial cable to the digital video recorder. On the other hand, IP camera delivers compressed digital video signal via Ethernet cable, then broadcasting over whole network including LAN and WAN (Internet)...   Learn More >

HD-over-coaxial solution prevails in analog video surveillance applications. Alf Chang - the a&s Consultant published his studies about the different analog high definition technologies including 960H, HD-CVI, ccHDtv, HD-MDI, HD-SDI and HD-TVI. Multiple HD-over-coaxial technologies coexist, inevitably brings some confusions to end-users, security installer, security integrators...   Learn More >

What's the HDCVI camera? To answer this question, you need to know what the HDCVI, the HDCVI is the abbreviation of High Definition Composite Video Interface (HDCVI), which is one of recent technologies for offering high definition solution to analog surveillance system (CCTV)...   Learn More >

HD-TVI means High Definition Transport Video Interface, HD-TVI is based on traditional coaxial cable for video and data transmission, it supports not only 720P/1080P video signal, but also including audio, data signal over long distance up to 500 meters...   Learn More >

AHD stands for analog high definition, AHD's birth, is to solve the transmission distance limitations of existing HD-SDI solution. As one of new HD analog solution, AHD supports video transmission over traditional 75-3 coaxial cable up to 500 meters, and it becomes another alternative for HD analog solution...   Learn More >

In last year's Beijing Security Expo, Nextchip exhibited the AHD2.0 which is based on its predecessor AHD1.0. For front end camera, AHD2.0 TX supports 1080P@30fps video output, supports BT656/TB1120D input; while AHD2.0 RX input supports AHD1.0/AHD2.0/CVBS...   Learn More >

HD-TVI is one of analog high definition technologies, since the release of this new technology, Hikvision launched turbo HD cameras and DVRs are based on HD-TVI. HD-TVI is an open technology, which firstly introduced and released by Techpoint in 2014. With the highly successful launch of the HD-TVI technology last year. Techpoint released HD-TVI 2.0 technology at IFSEC 2015 in London...   Learn More >

Generally, higher bitrate means higher image quality, but since there is limitation for available network bandwidth and storage capacity for IP surveillance camera, a careful selection of bitrate and file zie is required for a balance between video quality and network bandwidth, as well as storage capacity...   Learn More >

Almost IP surveillance cameras support RTSP video stream, that means user can use media player to watch the live video from anywhere. RTSP is the abbreviation of real time streaming protocol, it's a network control protocol designed for use in entertainment and communications systems to control streaming media servers...   Learn More >

As we know, professional IP cameras have alarm input and output interface for security integration solution. Users can use this interface to connect other security devices such as PIR motion sensor, door sensor, perimeter beam sensor...etc. This article is intended to give a guideline for connecting alarm input/output interface of Dahua, Messoa, Sony...and more IP cameras...   Learn More >

Simple guide to teach you how to config a new IP camera. It's suitable for IP cameras based on Hisilicon and Davinci SoC solutions. Some network knowledge is required to follow/understand this tutorial...   Learn More >

Most majority IP cameras have built-in Micro-SD card slot for on-board snapshot/video storage. Some of them even allow user to access files in SD card remotely. In this article, we aim to provide you procedures on how to access files in SD card on IP camera through Windows Explorer or IE browser...   Learn More >

Today we are discussing the essential accessories for CCTV surveillance system - BNC connectors. BNC has different abbreviations which can be Bayonet Nut Connector, Bayonet Neil Concelman connector, or British Naval connector. BNC with the intended function of linkage for cables or devices. This type of connector is widely used with coaxial cable connection for RG59U and RG6U...   Learn More >

Traditional CCTV surveillance systems are still the most installed video surveillance system. For the installation, you can either choose to use the conventional coaxial cable (RG59) or the Cat5 (Unshielded twisted pair). Compared with the coaxial cable, the UTP with advantages of less expensive price, and working with video balun, user can extend video transmission distance...   Learn More >

Teach you how to connect analog PTZ camera to DVR, RS485 connection, How to setup protocol and baudrates by DIP switch (Dual in-line package switch). Open cover, you can find a DIP switch, you can configure address, protocol and baud rate by this DIP switch...   Learn More >

Balun is the abbreviation of balance+unbalance. A video balun is an one of important accessories that converts between a balanced signal and an unbalanced signal. The reason why use video baluns? Video baluns, also known as CAT5 baluns, enable security installers to utilize CAT5 cable running video (and optionally power) for CCTV video cameras...   Learn More >

For outdoor video surveillance applications, users have to choose outdoor security cameras. Although most of outdoor security cameras featured with waterproof design, we also realize the importance of qualified waterproof installation. Waterproof is the key factor for reliable working of your video surveillance system, especially for those outdoor security cameras...   Learn More >

For better night vision performance of your video surveillance system, user can choose to install separate IR illuminators which have vandal-resistant and weatherproof design. The installation of IR illuminators can be time-consuming in aiming the target due to the invisible characteristic of infrared. In this article we will show you how to install the IR illuminators quickly, while get the optimal performance...   Learn More >

Security cameras are suitable for both indoor and outdoor video surveillance, when cameras are installed outdoor, they must be able to continue working properly. To achieve this, the security cameras must can effectively withstand harsh conditions - such as rain, dust, wind, sand, salt, extreme hot and cold temperature etc...   Learn More >