Tuesday, 4 October 2016
Understanding CCTV Troubleshooting
The procedure of troubleshooting a CCTV system is considered horrible even by some of the installation and service managers in Singapore whereas others consider it as a form of art. A problem can occur in a CCTV system anytime, during its initial installation and afterwards. Many people consider the process of troubleshooting as an additional expense over the operation cost of their surveillance system. But even a new technician can resolve the issues in the surveillance system if he has basic knowledge about the test equipment used for this purpose and the ways to use it. Brief information in this regard is provided here under to understand these procedures easily.
Observing the diagram of the system
While troubleshooting a CCTV system the first step should be to understand the layout of the system by examining its block diagram. This step becomes more important for the service technicians when the surveillance system is used at different locations for monitoring. One can properly follow the procedures of troubleshooting by following the data paths displayed in its videos. They can easily determine the problem by understanding these paths as a system is easy to understand through paper diagram than in the field. Moreover it takes more time to walk through the field than examining a diagram.
Answer certain questions
After examining the diagram of the CCTV system the technician should ask few questions to get information about the system so that its troubleshooting can be done easily. Your questions should be related to:
- The age of the CCTV system as electronic equipment usually fails to work as it wears out with time.
- The occurrence of the same problem in the past, it will help in determining the problem more easily
- Troubleshooting was tried earlier or not, it will help in using different methods for this purpose
Types of cables installed
- Installation of video amplifier in the system
- Number of video monitoring locations attached to the system
Al these questions will help the technician to know the actual position of the CCTV system which will help him in making right decisions regarding the procedures to be used for its troubleshooting.
Division of the system
As a basic rule of troubleshooting art the entire system should be divided into parts so that you may not miss any part while resolving the problem. Moreover it will also speed up your procedure of finding proper solution of the problem. The CCTV system can be divided mainly into three sections camera, control system and communication system. Usually problem in a surveillance system is found in its communication part or camera whereas its control system is linked with programming and termination of errors.
Normally more than 60% problems in CCTV systems are caused due to disorders in their connections, termination and cable system whereas nearly 25% problems are related to power supply like over voltage etc. in this way only nearly 10% of the problems are related to the failure of the equipment or the errors caused by human efforts. So, if you provide proper training and education along with suitable tools to your technician then the money spent on him will pay back its value more than your expectations, with time.
Testing tools and equipment
The troubleshooting technician should be able to pin point the problem by evaluating the signs instead of guessing the problems in your CCTV system. So for this purpose he must be equipped with some basic tools that can be useful for resolving problems in your system. These tools can be video oscilloscope, volt-ohm-meter, ND3 lens filter, test monitor along with a set of screwdrivers
Aim of troubleshooting procedures
All the procedures for troubleshooting CCTV system are used with an aim to reproduce video images properly so that they can be displayed on the monitors and accepted the investigating teams. So in order to get acceptable images of any information the surveillance system should have a proper control system as well as properly working oscilloscope. You can track the information through the entire loop of the video by making certain temporary variations in the signals coming in visible wave form from the camera. The oscilloscope of the system can help in detecting the problem of "No Video" caused by the excessive use of its auto-iris lens with wide open latch. It can considerably reduce the time taken for finding and resolving the problem along with preventing its occurrence in future by improving the capability to view and analyze the waveform of the video. Basically a waveform video contains blanking information, video information and sync information which can be used to determining the problem by understanding them properly.
Installation and training
The need of troubleshooting the CCTV system can be reduced by using proven procedures for its proper installation and for this purpose the technicians should be provided proper training. Simple mistakes in the installation of surveillance system like incorrect installation of the connectors, cables and termination system can cause havocs while making videos through it. You should use right type of cables and connectors as suggested by the manufacturers of CCTV systems to get perfect results. Earlier aluminium-shielded cable and copper centred conductors were considered as the standard equipment suggested for this purpose but today they have been outdated.
Manufacturers are consistently revising the type of cables and connectors used for making good videos due to the improvement in digital technologies to make their systems more effective and accurate. Today manufacturers have shortened the distance of the operating cables of their surveillance systems because digital equipment requires smaller range of operation than analog equipment. The information of all these things will help not only in the proper installation of CCTV but also in resolving its problems. Some of the manufacturers of surveillance systems are offering training courses to make troubleshooting and repairing their systems easier. Such arrangements have helped in reducing the number of phone calls related to the problems in the surveillance systems.
Thus, by understanding the procedures of troubleshooting CCTV your technical staff can not only keep our system in effective working condition but also save lots of your money by detecting the pilferages in your business premises in Singapore.