IPv4 may have been replaced by IPv6 in public networks, but it is still in widespread use in private networks, including CCTV. This short course lifts the lid on how IPv4 works, and includes a primer on masking. Read More

Many CCTV systems do not offer high quality pictures because the correct lens has not been specified at the survey stage.  In order to appreciate the role of a lens it is necessary to understand:  Fixed and variable focal lengths Manual and auto-iris lenses ​Depth of field Lens filters Back focusing and the role of a zoom lens Automatic Electronic Shuttering (AES) Varifocal lenses Aspherical lens Zoom lenses IR (Infrared) lenses Megapixel lenses If you would like to learn more about this fascinating subject, at the end of this module we offer you an exclusive 10% discount off our CCTV over IP Networking course.   Read More

WiFi and Mobile networks have long been the standard short range communications infrastructure, but are rapidly running out of capacity; at the same time these networks lack security. Li-Fi is the latest and possibly the most exciting – and definitely the most interesting – alternative, which is explained in this short module. Read More

Lighting, of whatever type is essential to produce CCTV (VSS) images of evidential quality, this bitesize module with audio delivered by one of our expert tutors will look at light & CCTV including the behaviour of light, light meters and the different types of light. Read More

This Bite Size module takes a fascinating look at Local Area NetworksAn obvious question to ask is 'is it a network?'  That of course depends on your own definition of the word 'network' However, if the analogy of a road or rail network is used, you will see that a LAN, for example, is not actually a network at all. A road network provides alternative routes between geographic points, which are instantly available to a traveller. The same goes for the rail network. Read More

Following on from LAN bundle 1, this bundle explores Virtual Local Area Networks (VLANs), why they’re needed, how they are set up and used, and how Quality of Service over Ethernet became a reality. We explain how the Domain Name Service (DNS) swaps web and email addresses into the correct IP addresses and also the principles behind providing Quality of Service. You’ll learn about delay, jitter and loss, presented in an easily digestible and jargon-free manner. Lastly, we examine the development of the router; from a simple packet switch, to the highly intelligent device we have today and the fundamentals of a routing protocol, queuing and priority, and autonomous systems. On completion of the four bitesize courses, you will be able to download and print a certificate to demonstrate your learning which is also worth 8 CPD (Continuing Professional Development) points. Read More

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