CCTV VIDEO. TRAINING MANUAL. Someone once said, "Knowledge is the key to success". This rule also applies to the installation and maintenance of CCTV. The CCTV Technology Handbook was funded under Interagency Agreement No 7) Does the security budget cover regular maintenance, training, and upgrades to the . In manual mode, the operator can control the direction of the camera. training on Honeywell CCTV Solutions. This training course is intended for Installation / Service technicians and Network Backup (scheduled and manual) .

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CCTV Basic Course - Free download as PDF File .pdf), Text File .txt) or read online for free. Samsung Pdp Plasma Training Manual [ET]. Uploaded by. CCTV Training Material - Free download as PDF File .pdf), Text File .txt) or read online for free. CCTV MANAGEMENT & OPERATIONS MANUAL. Page 2 of Providing inductions and training to staff involved in operating and working http://www.$file/

Modeling images taking into account lens distortion barrel and pincushion. Obtain Image Model for each camera in the project based on models of scene and equipment. This image can be printed and saved. Modeling special cameras Modeling horizontal projection of the view area and visualization of the pixel density of PTZ cameras. Visualization of the coverage area on the surrounding objects and the pixel density distribution of PTZ cameras. Modeling presets of PTZ cameras.

Modeling images from presets of PTZ cameras. Modeling horizontal projection of view area and visualization of distribution of the pixel density of cameras with Fisheye lens. Visualization of the coverage area on the surrounding objects and the pixel density distribution of cameras with Fisheye lens. Modeling round images from Fisheye cameras. Modeling combined round images from Fisheye cameras with one fragment with camera resolution.

Modeling dewarped image fragments from Fisheye cameras with camera resolution. Modeling horizontal projection of view area and visualization of distribution of the pixel density of multisensor cameras with arbitrarily directed modules. Visualization of 3D view areas of multisensor cameras.

Modeling images from multisensor cameras with arbitrarily directed modules. Modeling multisensor cameras with horizontal directed modules. Modeling cameras with built-in Infrared illuminator. Design operator interface using the Monitor window.

Iris biometrics work with glasses in place and is one of the few devices that can work well in identification mode.

Futures — Biometric. It requires a digital camera to CCTV develop a facial Basics image of the user for authentication and compares the image to a database.

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Visionics and Viisage analyze facial characteristics with geometric point algorithms. Where to find more information on CCTV specification. DC Tel Fax sev sikyur. Flag for inappropriate content. Related titles. Jump to Page. Search inside document.

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Getting Started With Ubuntu Popular in Computer Network. Jesselyn Dacdac Llantada. Popescu Erasmusica. Anonymous hlwKa3k9Z. Franklin Miranda Robles. The Lyon. Rajiv Ranjan. An object that was inside the zone of focus during the day can be outside the zone of focus at night.

One way to set up the camera to minimize the Depth of Field problem, is to adjust cameras focus at a time when the light level is at its lowest. This may not be convenient for your installers. It is the filter plate that welders look through to protect their eyes during welding operations.

When you have full daylight or bright lighting conditions the filter plate is placed over the cameras lens to simulate half lighting conditions. This filter plate costs only a few dollars and should be carried by installation personnel to every job site for use with Auto Iris lenses, especially those jobs using outdoor cameras.

By using the filter plate to adjust the Auto Iris, you will be centering the control range of the Auto Iris system. This will give you optimum performance from your cameras Iris control system. They are more accurate than large screen monitors and much easier to take up a ladder. They display the maximum focus numerically on an LCD type display.

By eliminating the subjective nature of focus setting, you will insure that all cameras will be set to their maximum focus by any installer. An understanding of Depth of Field and the proper setting requirements for Auto Iris cameras will save you time and reduce the frustration of having to return to the job site to refocus cameras. When your customer asks you to set up a camera to grab a shot of a license plate on a car, here are a few things you will want to know.

When setting up a camera to view a license plate, the framing is very important. You must frame the camera so that the plate will be in the cameras view no matter where the plate is mounted on the car, or how the car is positioned in the roadway.

The first trick is make sure you place the camera so that it can clearly see the numbers and letters on the license plate. Be sure to set the camera focus control for the sharpest focus. Make sure the plate is large enough in the scene to be identified. If you can do a good job of this, most installations will work very well during the daylight.

The camera works well during the day because the light from the sun is strong and defused, it comes from many sources by reflections off of all the objects in the immediate area. Unfortunately an unaided camera does not do as good a job of reading license plates at night.

They need some assistance to work well under dark circumstances. Even if the scene were well lit for observation by eye, a car presents special problems for a video camera. Often area illumination will be placed immediately over the entrance and exit gates, a narrowing point just where you would like to see the license plate.

Just as the car enters the gate area, a reflection from the overhead light bounces off the windshield and blinds the camera. The most common sources of camera blinding light are the headlights on the car. Any direct light source pointing into the camera lens at night will cause a camera blinding effect. The camera blinding effect at the least will result in a loss of detail around the direct light source, like a blooming effect or halo.

At its worst it can darken the screen so that you will only see the two headlights and everything else on the monitor will be black and unreadable.

The blooming effect or halo type of loss is caused by the scattering of electrons on the CCD element inside the camera. When it sees the bright hot refection or headlights, the iris in the camera will close down the opening in the lens. An auto-iris takes the light that it sees and tries to determine how to set the opening in the lens for the best picture illumination. It can use a peek measure of the light level entering the lens, or when you engage the Back Light feature it will take an average of the light ignoring the hot spots.

Unfortunately the back light feature in most cameras will not handle headlights or windshield flashes and only reduce the problem somewhat. A CLUE. A clue to the answer comes from the relatively good observations made during daylight. During the day most of a cameras received light comes from defused light and even if a car has its headlights on the camera hardly notices it, because the energy from the headlights are just a small portion of the light entering the lens.

To reduce the blinding effect of reflected light sources you can install a light source pointing directly at the car from the direction of the camera to where you wish to read the license plate.

The light source must be bright enough to overwhelm the headlights on the car and stop the cameras auto iris from closing down due to the increase in direct light.

To avoid blinding the driver of the car, you must use an infra red light source. People cannot see light in the infra red spectrum, but cameras can. In fact most CCTV cameras are very sensitive to the infra red light spectrum and will work quite well. Infra red light sources are available from the same manufacturers that you download your cameras from.

Try a test the next time you have a license plate reading camera. Arrange the camera in the normal way, and see what happens when the cars lights are turned on. Notice the darkening of the picture on your monitor. Then point a regular bright white spot light at the car from the direction of the camera. Notice that the scene gets brighter but also the headlights have less of an effect on the iris of the camera and you can see more of the details of the car, with much less blinding effect.

The main point here it to overwhelm the direct light coming from the car with a source of light coming from the camera. If you do this, license plates can be seen easily even under the worst conditions. The vast majority of coaxial cables are either 50 Ohm or 75 Ohm Characteristic Impedance.

This Characteristic Impedance is determined by the ratio of the diameters of the shield and core wire and the Dielectric Constant of the insulating material between the core wire and the shield. Since a coaxial cable must be terminated at both ends of the cable with resistances equal to the cable Characteristic Impedance to prevent reflections from impairing the picture, cameras must have an internal source impedance of 75 Ohms, and Monitors must be provided with a 75 Ohm termination.

In the past, CCTV cameras could be counted on to have proper 75 Ohm source impedances, but recently there have been a rash of cameras showing up on the market that do not have a 75 Ohm source impedance. In fact they exhibit almost zero output impedance even though the specification sheets that come with them specify 75 ohms! Clearly the cameras do not meet their own specifications and thus could be returned for not meeting their own published specifications.

The worst of termination problems occur when the camera has a zero source impedance, or the 75 Ohm impedance is left off at the Monitor location. By far the worst effects occur when both zero Ohm source impedance exists and the 75 Ohm termination is removed at the Monitor.

Ghosts and Ringing become more evident as the length of the coaxial cable becomes greater.

The ringing effect where a white-to-black or black-to-white transition in the picture is repeated many times in close succession occurs with short cable runs of 50 to feet. Obvious Ghosts appear when the cable is feet long. Another problem caused by zero source impedance cameras is that signals placed on the coaxial cable to control Pan and Tilt of the camera will be shorted out by the zero Ohm output of the camera and may cause remote Pan and Tilt systems to be intermittent or fail.

The same intermittent or failed condition may be induced into other equipment that is using the same coaxial cable to transmit special signals.

Cctv Training Manual

But how can you be sure a particular camera really has 75 Ohm output impedance when the spec sheets for that camera proclaim 75 Ohms?

The answer of course is to test the output impedance before installing them in the field. Unfortunately this measurement cannot be made directly with your trusty Volt-Ohmmeter. Measure the amplitude of the sync pulse with the termination in place. The sync pulse should read about 40 I. Now remove only the 75 Ohm Termination.

The sync level will Double 80 I.

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A typical defective camera well read almost the same amplitude with or without the termination on it. If a more exact measurement is desired, the following formula may be used.

The new digital revolution has brought us many new and exciting products for the CCTV industry. The DVR takes a camera video signal and converts it to a digital bit stream and saves it on a computer hard drive.

It can then be played back with remarkable fidelity. This new technology brings with it a new set of problems and solutions. This article will discuss some of the problems and solutions for DVR installations. To understand the problem we must look at the standards. A video standard was developed by the Institute of Radio Engineers so that all manufactured video equipment would be compatible.

The unit of measure for this standard is the I. One I. The additional 0. It is a common misunderstanding that all video is 1 Volt peak to peak. Now how does all this relate to the DVR problem? Yet if the video input signal is connected to a monitor it displays a video picture. At first you might think that the DVR is defective, that is very unlikely.

It is more likely to be a video level standards problem. Most DVR's are designed to accept a video signal of 1 Volt peak to peak with some extra range known as "headroom".

CCTV Basic Course

This headroom allows the video signal to exceed the 1 Volt peak to peak by some percentage. That makes it possible for the equipment to accept a video signal of up to 1. The standard Color signal measures 1. One of the most over looked problems in CCTV installation is the output level adjustment of the camera. However some camera manufacturers have "fudged" the standards some what.

When a monitor is attached to the video signal the video can be viewed because a video monitor is not sensitive to overload. This would lead you to believe that the DVR is non-functional, when actually the camera level is not set correctly.

To avoid DVR problems at installation and subsequent service calls the camera's in the system must be adjusted to the proper standard levels so that the video will not overload the DVR. It is recommended that a Camera Master or waveform monitor be obtained to set the camera's level accurately. Proper setting of the video levels will correct the problem and an understanding of what causes the problem will help you to solve other level related problems with digital equipment in the future.

Protecting a CCTV system and it components from lightning damage does not use the same methods used to protect human life from electrical shock. In fact many of the techniques used to protect humans from lightning also cause some other problems in the CCTV system.

First of all, nothing can prevent a direct lightning strike. The result is usually a smoking melted down blob of carbon and metal.

However, if the lightning strike is somewhat off center or just nearby, then there is a chance for electronic equipment to survive, provided certain precautions have been taken to protect the electronic components from over-voltage and over-current.

These two things cause electronic equipment to fail. This process creates as many paths to ground as possible to bleed off current from the strike and keep the destructive voltage from rising to high.

CCTV Training Material-2008

From a human protection point of view this is good solid advice, but from the CCTV equipment point of view this is very hard on the equipment and can reduce the lifespan of the equipment to the first occurrence of a lighting storm. The Ground Everything advice is designed to protect people from electric shock and should be followed wherever possible. But what you must do to protect equipment from damage is very different. The long cable runs are more prone to voltage build ups due to local lightning static discharges.

When lightning strikes from cloud to cloud or from the upper atmosphere to the ground, a differential charge appears on the ground. Since the charge is not equal at all points on the ground, this differential change will cause current the flow down any conductor connected to both grounds. This current flow can be thousands of amperes occurring for only milliseconds, but in that short amount of time the current causes a sharp rise in the voltage that can reach thousands of volts.

Your CCTV equipment is not designed to withstand that kind of voltage at the video input and output terminals, so the equipment gets permanently damaged. Even a few inches of l6 wire is enough to generate up to volts or more at the video input frying the video system when lightning strikes, not because of the resistance of the wire but because of the inductance of the wire connecting the lightning protection unit to the ground.

A lightning strike is a very short duration event, and so the signal it creates has very high frequency content, this is why the inductance of the connecting wires, not the resistance determines the effectiveness of the lightning protection device. Even a very small inductance on the order of one or more nano-Henrys is capable of generating very high voltages between the video equipment and the lightning protection devices during a lightning discharge.

The ground wires on the lightning protection devices should be as short as possible.

Do not add extra wire to the ground wire to extend the connection, instead route the video cable over to the lightning protection device mounted as close to the ground as you can so that the ground path for the current will be as short as possible. There is one more thing to consider when using lightning protection. Lightning protection requires a good ground to function. That ground can induce ground loop artifacts into your video signal.

Now that you have protected your video equipment with the lightning arrestors, you may discover that you now have a ground loop in your video image. This will look like black or translucent bars on the video image.

These bars can stand still or move slowly up the screen. When the bars reach the top of the screen others will appear at the bottom of the screen to take their place. Since you cannot remove one of the grounds to eliminate the ground loop it may be necessary to install ground loop blockers to finish the system. The ground loop blockers will remove the interfering signals created by the lightning arrestors and the arrestors will protect the system from lightning strikes.

Remember, grounding is for electrical shock protection purposes. Lightning arrestors reduce damage to electronics from lightning. You cant avoid equipment damage from a direct hit. Both bonding and grounding conditions must be met to protect both people and the equipment. Someone once said, "Timing is everything". The Line-Lock feature is available on most CCTV cameras, and is used to prevent picture rolling on the monitor during switching from one camera to another.

Picture Roll will cause the loss of vital picture information in the video recorder and is irritating to view. This article will discuss the problems encountered by installation and maintenance personnel along with solutions to save time and make your job more profitable.Handles compression of video and audio and a wide variety Of streaming rates. The receiver works in very much the same way but in the reverse order, with light from the fiber hitting a light sensitive receiver element or photo detector which converts the light signal into an electrical signal, then the signal goes into an AGC Automatic Gain Control to offset any light amplitude losses incurred in the fiber run.

When the chroma level is low, the colors will be dull. A 60Hertz square-wave signal contains the fundamental or lowest frequency of 60Hertz, however it also has every harmonic or multiple of that frequency all the way up to and beyond the video frequency range. This standard has been adopted by all industries in the United States and other parts of the world.

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