Lesson 1Overview of CCTV system architecture: cameras, recorders (NVR/DVR), storage, network, powerLearn how cameras, NVRs or DVRs, storage units, network switches, and power supplies connect to build a complete CCTV structure that allows recording, remote viewing, backup options, and room for growth in Eritrean installations.
Roles of cameras, encoders, and recordersNVR vs DVR vs hybrid architecturesNetwork topology for CCTV trafficStorage sizing and retention planningRemote access, clients, and VMSLesson 2Regulatory and privacy considerations affecting camera placement and recordingUnderstand how privacy regulations, data safeguards, and sector guidelines shape camera positions, storage durations, sound recording, and notices, ensuring CCTV systems in Eritrea stay lawful and strong against checks or court matters.
Key global and local CCTV legal frameworksData protection, consent, and purpose limitationAudio recording restrictions and best practicesSignage, notifications, and privacy maskingRetention periods, access rights, and logsLesson 3Illumination and low-light technologies: IR, white-light, low-light CMOS, WDR, BLC, HLCDiscover how infrared and white light sources, low-light CMOS sensors, wide dynamic range, backlight compensation, and highlight compensation combine to produce clear images in dark areas, backlit spots, and bright contrast scenes typical in Eritrean CCTV use.
IR LEDs, IR range, and wavelength choicesWhite-light illuminators and deterrenceLow-light CMOS and minimum lux ratingsWide Dynamic Range concepts and tuningBLC and HLC for backlight and glareLesson 4Lens basics: focal length, field of view, fixed vs varifocal, auto-iris, megapixel lens considerationsGrasp how focal length, sensor dimensions, and lens standards determine viewing area, recognition range, and picture clarity, and evaluate fixed, adjustable focus, auto-iris, and high-resolution lenses for various Eritrean CCTV needs.
Focal length, sensor size, and angle of viewFixed vs varifocal lens use casesAuto-iris vs manual iris operationMegapixel lens resolution and MTFLens selection for typical CCTV scenesLesson 5Mounting, housings and environmental ratings: pole, wall, ceiling mounts, IK and IP ratings, vandal housingsFind out how mounting tools, protective casings, and weather resistance levels shield cameras from rain, damage, and shocks, and select pole, wall, or ceiling fixes that provide steadiness, protection, and proper sight angles in Eritrea.
Wall, ceiling, and pole mount selectionOutdoor housings and heater–blower unitsIP ratings for dust and water ingressIK ratings and vandal-resistant designsCable routing, seals, and strain reliefLesson 6Power and connectivity: PoE fundamentals, power budgets, cable types (Cat5e/Cat6, coax), surge protectionAcquire useful insights into PoE guidelines, energy plans, wire kinds, and coaxial choices, including surge and storm safeguards, to guarantee steady, secure, and rule-following power and data flow to CCTV equipment in Eritrean setups.
PoE standards, modes, and power classesCalculating and verifying power budgetsCat5e vs Cat6 vs coax for CCTV linksConnectors, patch panels, and terminationsSurge, lightning, and grounding practicesLesson 7Image sensors, resolution standards and their trade-offs: 720p, 1080p, 4MP, 4KReview how sensor scale, pixel spacing, and clarity levels like 720p, 1080p, 4MP, and 4K influence sharpness, data use, storage needs, and night vision, aiding smart choices for each watchfulness situation in Eritrea.
Sensor types, sizes, and pixel pitchCommon CCTV resolutions and aspect ratiosDetail levels for detect, observe, identifyBandwidth and storage impact of resolutionBalancing resolution with low-light needsLesson 8Camera types and form factors: fixed dome, turret, bullet, PTZ, panoramic, covertExamine main CCTV camera styles and shapes, such as domes, turrets, bullets, pan-tilt-zoom, wide-view, and hidden types, and see how each build impacts area coverage, warning effect, resistance to meddling, and setup ease in Eritrean environments.
Fixed dome and microdome applicationsTurret cameras and IR performanceBullet cameras for long corridorsPTZ cameras for active monitoringPanoramic and multi-sensor camerasCovert and discreet camera options