Someone once said, "Knowledge is the key to success". This rule also applies to the installation and maintenance of CCTV camera equipment. Have you ever installed a CCTV camera system and then had to go back to solve a problem that was overlooked. A basic understanding of CCTV video signals, can save you hundreds of man hours, improve customer relations and increase job profitability all at the same time. This manual will discuss problems and solutions for CCTV camera installations.
Table of Contents
VIDEO LEVELS. HOW SYNC PULSE AMPLITUDE EFFECTS CCTV INSTALLATIONS. WHITE LEVEL IRIS SETTING, HOW MUCH IS ENOUGH? PEAK TO PEAK MEASUREMENT OF VIDEO. COLOR CAMERAS AND COLOR BURST. VERTICAL INTERVAL, ITS MANY USES. TERMINATION, THE END OF THE LINE. THE BASIC THREE. CCTV VIDEO GROUND LOOP PROBLEMS. CCTV FOCUS PROBLEM SOLVING. DEPTH OF FIELD, WHAT IS IT? THE PROBLEM WITH AUTO IRIS LENSES. HOW TO SHOOT A LICENSE PLATE WITH A CCTV CAMERA. HOW TO MEASURE CCTV CAMERA OUTPUT IMPEDANCE. PROBLEMS CAUSED BY INCORRECT TERMINATIONS. CORRECT MEASURING OF CAMERA OUTPUT IMPEDANCE. SYNC PULSE PASS / FAIL TEST TABLE 1. CALCULATION OF PRECISE SOURCE IMPEDANCE. DIGITAL VIDEO RECORDER PROBLEM SOLVING. HEADROOM IN THE DVR. HOW TO PREVENT LIGHTNING DAMAGE IN CCTV. CCTV LINE-LOCK PROBLEMS. CCTV UPS TROUBLE SHOOTING TIPS. GROUND LOOPS AND THE COMMON POWER SUPPLY. VIDEO LINES OF DEFINITION. FIBER TRANSMISSION PROBLEM SOLVING. A HELPING HAND. 1 1 1-2 2 2 2 2-3 3 3-5 5 6 6-7 8-9 10 10 11 11 11 12 12-13 14-16 16-18 19-20 20-21 21-25 25-28 28
VIDEO LEVELS. To discuss video let's start with the unit of measure, the I.R.E. unit. I.R.E. stands for Institute of Radio Engineers, this regulating body set the standards of measure for the video industry. This standard has been adopted by all industries in the United States and other parts of the world. 140 I.R.E. units is equal to 1 Volt Peak to Peak. I.R.E. units are easier to use because they divide into a video signal