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Q: Why does the Tilt fail?

A: Tilt is a special function of PTZ camera, it is a common failure that a tilt cannot work well or even cannot rotate after it's used for a while.
    Reasons besides the quality factor are described as follows:
    Hanging installation method has been used to install the camera, for which frontal installation is only allowed. This increased rotation load on the tilt and caused damage on the driving gear of the tilt or even result in burned motor.
    Total weight of camera and shield excess the bearing of the tilt. Typically, the weighty shield of the outdoor tilt may result in rotate failures (especially for the vertical direction) of the tilt.
    Outdoor tilt may malfunctions or been damaged as a result of too high or too low ambient temperature and poor waterproof and frostproof provisions.

Q: What is the Important points for maintenance of surveillant camera and equipments?

A: Check the power socket to the cameras regularly to prevent the plug from falling off.
    Ensure constant supply voltage for each camera and surveillant center.
    Cautions for cameras at lower position indicating no touch for non-surveillance supervisor is suggested.
    Special staff should be appointed for the charge of surveillant equipments in the surveillant center, operation is not allowed for non- surveillance staffs.
    Make sure all the equipments in the surveillant center are powered off every night in the case of nobody exist.
    Wipe and maintain the surveillant equipment frequently.

Q: What is M-JPEG Video Compression for home security camera?

A: M-JPEG technology is a sport of still image compression technology, the video sequence motion as a succession of still images to process, the compression technology to compress each frame separately, can be randomly stored for each frame in the editing process, can be accurate to frame editing.

Q: What is H.264 Video Compression for CCTV security cameras?

A: H.264 is the development of joint video ITU-T VCEG and ISO/IEC MPEG set of a new digital video coding standard, it is ITU-T H.264, and ISO/IEC MPEG4 tenth.

Q: What is the MPEG4 code of surveillance project camera?

A: The MPEG standard is a series of audio and video signals and multimedia signal compression and decompression technique standards developed by the moving picture experts group ISO.

Q: What is a fixed stream code of security camera?

A: Fixed stream codec provides bandwidth is fixed, regardless of the size of data, when the image color is rich, changes rapidly, often is not enough bandwidth and reduce the video quality, looks a little pause or color image difference; and the image data is not much, the bandwidth provided more than, a waste of storage space.

Q: What is the dual code stream of surveillance camera?

A: A video image compression by video encoder output after two separate code streams, the output code stream resolution, frame rate, code rate and other parameters can be set up independently, the two streams generated can meet different needs, such as a hard disk, a network transmission.

Q: Why no image showed in security camera operation interface in browser?

A: Please check following points:
    Whether you have uploaded the OXC plug-in?
    When you log in your camera by IE browser, you need to upload the OCX unit. You must run the OCX plug-in, if you forbid this, you will not get the image. Click “tools”- “Internet options”- “Security”, enable all the ActiveX available
    Did the firewall or the antivirus program stop the uploading of the ActiveX?
    IF yes, close them.
    Whether you have chosen the right modes to sign in mode? When you use IE browser, you should choose the first mode to sign in , if you use Google Chrome or Fire fox browser, you should choose the second mode to sign in .(Some function lost in the second mode.)
    If you have tried all the methods and still can not get the image,try to change your camera's http port to 98,97,8825 etc, because maybe port 99 was used by other device or application.

Q: What is the differences between Monitors and TV ? Why not use TV as a monitor in CCTV system?

A: Monitor's function is simple than TV, but in performance the required higher than television, the main difference is reflected in three aspects.
    Image definition: because the traditional TV receiving the radio frequency signal emitted from the television, video bandwidth of the signal corresponding to the usually less than 6M, so the definition is usually greater than 400 TV lines, image definition requirements monitor has high, so professional monitors in channel circuit than traditional TV should have the bandwidth compensation and promotion circuit, so that through wider bandwidth, higher resolution images.
    Color original degree, if the definition is mainly determined by the amplitude and frequency characteristics of the video channels, degree of reduction is mainly composed of monitor in the red (R), green (G), blue (B) determined by the phase three primary colors chrominance and luminance signal. The monitor is usually observed as a static image, thus to monitor color reduction degree requirements are higher than the television, professional monitor video channel in brightness, chroma and R, G, B should be treated with compensation circuit is precise and delay circuit, in order to ensure bright / phase signal, G, and R the synchronization of B signals.
    The stability: monitor in a closed-circuit monitoring system, usually requires 24 hours a day, 365 days a year electricity through continuous use (and usually work only a few hours of TV every day), and the application environment of some monitor may be more severe, more high which requires monitoring of reliability and stability. As compared with TV sets, in the design, the monitor current, power, temperature and resistance to electrical interference, electric shocks and margin and the average failure time are far greater than the TV monitor, at the same time also must use the full shielding metal shell to ensure the electromagnetic compatibility and interference performance; in the selection of components, the monitor components used in the voltage, current, temperature, humidity and other characteristics are higher than the television set components; and in the installation, debugging and especially technological requirements of components and the aging, monitor requirements are higher, TV manufacturing machine when the aging is usually in line normal electricity for 8 hours, and monitor the aging is required in the aging pipeline of high temperature, high humidity environment on electrical aging for more than 24 hours, in order to ensure the stability of the whole.
    From the above analysis shows that, if the use of television as the terminal monitor system, except possibly feel the image is fuzzy (low resolution, color original degree is poor), TV components are not suitable for uninterrupted continuous use requirements. If forced to use TV as a monitor. Light is prone to failure, serious when may be due to the work of TV high temperature arising from the accident.

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