Lesson 1Network vs analogue systems: NVR vs DVR architectures and hybrid optionsUnderstand differences between analogue and IP CCTV, including DVR, NVR, and hybrid setups. Learn migration strategies, cabling effects, and when to retain old coax or switch fully to network video for better performance.
Analogue HD formats over coaxIP camera and NVR setupsHybrid DVR and encoder choicesBandwidth and cabling effectsMigration from DVR to full IPLesson 2Recorders and storage: NVR sizing, RAID options, retention calculations, write endurance and HDD selectionUnderstand how to size NVRs for channel numbers, bitrate, and retention periods. Compare RAID levels, HDD types, and write endurance, and calculate storage requirements for different resolutions and frame rates in real-world scenarios.
Bitrate estimation per camera streamRetention and storage sizing formulasRAID 0, 1, 5, 6, and 10 trade-offsSurveillance-grade HDD vs desktop HDDWrite endurance and workload ratingsLesson 3Types of CCTV cameras (fixed, varifocal, PTZ, dome, bullet) and use-casesCompare fixed, varifocal, PTZ, dome, and bullet cameras and their best applications. Learn how form factor, environment, and risk level influence camera choice, deterrence, and resistance to vandalism in diverse settings.
Fixed lens cameras for simple scenesVarifocal lenses for flexible framingPTZ cameras for active monitoringDome vs bullet form factor selectionVandal-resistant and covert optionsLesson 4Sensor formats, resolution, frame rates, and low-light performance (1/2.8", 2MP, 4MP, 4K, WDR, IR range)Explore how sensor format, resolution, and frame rate influence image quality and bandwidth usage. Learn low-light concepts such as WDR, IR range, and noise reduction, and how to balance detail with storage and network constraints effectively.
Common sensor sizes and crop factors2MP, 4MP, 4K resolution pros and consFrame rate vs motion blur and storageTrue WDR vs digital WDR techniquesIR illumination range and limitationsLesson 5Choosing realistic models: interpreting datasheets, vendor reputations, warranty and support considerationsDevelop skills to interpret camera and NVR datasheets, compare actual performance, and avoid marketing hype. Evaluate vendor reputation, firmware support, warranties, and RMA processes when selecting models for long-term reliability.
Key specs that truly affect performanceReading sensitivity and lux ratingsVerifying bitrate and codec claimsVendor firmware and security historyWarranty terms and RMA proceduresLesson 6Network switches and PoE: PoE standards (802.3af/at/bt), budget calculations, managed vs unmanaged switchesLearn PoE standards, power budgets, and switch selection for CCTV networks. Compare managed and unmanaged switches, port counts, uplink capacity, and redundancy options to ensure reliable camera connectivity in various setups.
802.3af, 802.3at, 802.3bt power levelsCalculating PoE power budgetsPoE switch vs midspan injectorsManaged vs unmanaged switch featuresUplink capacity and oversubscriptionLesson 7Camera features: PoE, ONVIF compatibility, motion detection, audio, tamper detectionReview key camera features that affect integration and usability, including PoE, ONVIF, motion detection, audio, and tamper alarms. Learn when each feature is essential, optional, or unnecessary for specific projects and sites.
PoE classes and power draw per cameraONVIF profiles and interoperabilityMotion detection and smart analyticsAudio input, output, and legal issuesTamper detection and event handlingLesson 8Accessory selection: mounts, housings, sunshields, cable glands, surge protectors, and weatherproofing for external unitsReview accessories that protect and stabilise CCTV installations, including mounts, housings, sunshields, glands, and surge protection. Learn weatherproofing practices for reliable outdoor deployments in challenging conditions.
Wall, pole, and corner mount choicesOutdoor housings and sunshieldsCable glands and strain reliefSurge protectors and groundingWeatherproofing seals and ratingsLesson 9Power supplies and redundancy for CCTV: DC injectors, centralised power supplies, UPS sizing for recorders and network equipmentStudy power options for cameras and recorders, including DC supplies, PoE injectors, and UPS systems. Learn to size UPS capacity and design redundancy to maintain recording during power interruptions in critical areas.
Centralised vs local power suppliesDC distribution and voltage dropPoE injectors and midspan designUPS sizing for NVRs and switchesRedundant power and failover plansLesson 10Lens selection, field of view, and focal length calculations for given coverage areasLearn how focal length, sensor size, and lens type affect field of view and target detail. Practice coverage planning, angle selection, and basic lens calculations to meet identification, recognition, or overview needs effectively.
Fixed vs varifocal lens characteristicsFocal length, FoV, and distance relationsSensor size impact on coverage widthCalculating pixels per foot or metreSelecting lenses for entrances and gates
