Lesson 1Network vs analogue systems: NVR vs DVR architectures and hybrid optionsGrasp the differences between analogue and IP CCTV, including DVR, NVR, and hybrid setups. Discover migration approaches, cabling effects, and when to stick with legacy coax or switch fully to network video for better performance.
Analog HD formats over coaxIP camera and NVR topologiesHybrid DVR and encoder optionsBandwidth and cabling implicationsMigration from DVR to full IPLesson 2Recorders and storage: NVR sizing, RAID options, retention calculations, write endurance and HDD selectionFigure out how to size NVRs for channel numbers, bitrate, and retention periods. Compare RAID levels, HDD types, and write endurance, plus calculate storage requirements for various resolutions and frame rates in real-world use.
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 ideal applications. Understand how form, environment, and risk levels guide camera selection, deterrence, and vandalism resistance for secure setups.
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)Dive into how sensor format, resolution, and frame rate impact image quality and bandwidth. Master low-light features like WDR, IR range, and noise reduction, balancing detail against 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 considerationsBuild skills to read camera and NVR datasheets, assess true performance, and dodge hype. Weigh vendor reliability, firmware updates, warranties, and support processes when selecting models for long-term dependability.
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 switchesGet to grips with PoE standards, power budgets, and switch choices for CCTV networks. Contrast managed and unmanaged options, port numbers, uplink speeds, and redundancy for solid camera connections in varied 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 detectionExamine essential camera features for integration and ease of use, like PoE, ONVIF, motion sensing, audio, and tamper alerts. Know when each is vital, optional, or surplus for your specific project needs.
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 unitsLook at accessories that safeguard and secure CCTV installs, such as mounts, housings, sunshields, glands, and surge guards. Master weatherproofing tips for dependable outdoor systems in New Zealand's climate.
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 equipmentExplore power choices for cameras and recorders, including DC supplies, PoE injectors, and UPS units. Learn to size UPS capacity and build redundancy to maintain recording through power cuts without interruption.
Centralized 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 areasUnderstand how focal length, sensor size, and lens type shape field of view and detail capture. Practise planning coverage, picking angles, and basic lens calculations to meet identification, recognition, or overview goals.
Fixed vs varifocal lens characteristicsFocal length, FoV, and distance relationsSensor size impact on coverage widthCalculating pixels per foot or meterSelecting lenses for entrances and gates
