- CCTV Video Tutorials by the CCTV Camera Experts br br This ApexCCTV video tutorial covers installation and configuration of the AVTech 16 Channel NVR software on your computer. The video also covers basic settings, adding cameras, as well as playback and view management. This is a step by step guide from beginning to end covering all material needed to get the AVTech 16 Channel system up and running.br br Please let us know if the video was helpful by leaving comments. Please visit our website for more video tutorials and professional grade CCTV equipment.