Lesson 1Network vs analog systems: NVR vs DVR architectures and hybrid optionsUnderstand the differences between old analog and new IP CCTV systems, including DVR, NVR, and mixed setups. Learn ways to change over, how cabling affects things, and when to stick with old coax wires or switch fully to network video for better security.
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 selectionLearn how to size NVRs for number of channels, data speed, and how long to keep recordings. Compare RAID types, hard drive kinds, and how much writing they can handle, then calculate storage for different picture qualities and speeds.
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, adjustable zoom, moving PTZ, dome, and bullet cameras and where each works best. Learn how shape, place conditions, and danger level guide your choice for stopping crime and standing up to damage.
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)See how sensor size, picture sharpness, and speed affect image clearness and data use. Learn about night vision like WDR, IR distance, and less noise, and how to balance details with storage and network limits in tough light.
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 spec sheets, compare true performance, and dodge sales tricks. Check seller trust, software updates, guarantees, and return processes when picking models for long use.
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 rules, power plans, and switch choices for CCTV networks. Compare smart and simple switches, port numbers, link speeds, and backup ways for steady camera connections in busy 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 detectionLook at key camera parts that help fitting in and using easy, like PoE, ONVIF links, motion sense, sound, and tamper alerts. Learn when each is needed, extra, or not for your job.
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 unitsCheck add-ons that guard and steady CCTV setups, like stands, boxes, sun covers, wire seals, and surge guards. Learn weather-proof ways for strong outside work in rainy or hot places.
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, centralized power supplies, UPS sizing for recorders and network equipmentStudy power choices for cameras and recorders, like DC boosters, main power units, and UPS backups. Learn to size UPS power and plan extras to keep recording when lights go out.
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 areasLearn how lens focus, sensor size, and type change view area and close details. Practice planning cover, angle picks, and simple math for seeing clear, knowing, or watching wide needs.
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
