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

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

This bundle of four bitesize learning modules takes a fascinating look at LANs ( Local Area Networks) and the relationship between bit rate and bandwidth. You’ll learn how cabled networks and broadband supports high data rates, together with their impact on CCTV quality. We also take a look at the most popular types of UTP cable and their connectors, and explore the range of simple tools and utilities which are available to trace faults, determine end-to-end delay and pinpoint problems in IP networks. On completion of the 4 bitesize courses you will be able to download and print a certificate to demonstrate your learning which is worth 8 CPD (Continuing Professional Development) points. Read More

Locking mechanisms and turnstiles play a pivotal role in access control. Within this course we provide an introduction to the wide variety of electronic locks available , including maglocks, as well as  cover different types of vehicle barrier systems and turnstiles. We also simplify the difference between Fail Secure and Fail Unsecure locks. Read More

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