1. CCTV Installation
1.Planning and Design
Site assessment: Identify risk areas, entry/exit points, blind spots, lighting conditions.
Camera selection:
Dome / Bullet / PTZ
Indoor vs outdoor (IP66/IP67 rating)
Resolution (2MP, 4MP, 8MP)
Night vision (IR, color night vision)
System type:
Analog (DVR-based) – lower cost, limited scalability
IP (NVR-based) – higher quality, remote access, scalable
Coverage and angles: Avoid backlighting, ensure correct field of view.
Compliance: Local laws on privacy, data retention, and signage.
1.2 Installation Process
Mounting: Secure cameras on walls, ceilings, poles, or brackets.
Cabling:
Coaxial (RG59) for analog
Ethernet (Cat6) for IP systems
Conduit/trunking for protection
Power supply:
Individual adapters, centralized SMPS, or PoE switches
Recording unit: Install and configure DVR/NVR with HDDs.
Network setup: IP addressing, router configuration, remote viewing.
Testing & commissioning: Check image clarity, night mode, recording, and playback.
2. CCTV Maintenance
2.1 Routine Preventive Maintenance
Camera cleaning: Remove dust, cobwebs, moisture marks.
Focus and alignment: Adjust after weather or structural movement.
Cable inspection: Check for cuts, rodent damage, loose connectors.
Power check: Verify adapters, SMPS, PoE ports.
Recording verification: Ensure all channels are recording correctly.
2.2 Software and System Checks
Firmware updates (DVR/NVR and IP cameras).
Password management and cybersecurity checks.
Time/date synchronization.
Storage health check (HDD SMART status).
2.3 Troubleshooting
No video / black screen
Poor night vision
Network or remote access failure
HDD not detected or recording stopped
3. Maintenance Frequency (Typical)
Residential: Every 6 months
Commercial/Industrial: Quarterly
Critical infrastructure: Monthly or as per SOP
4. Documentation and Handover
Camera layout drawings
IP address list and credentials
Maintenance log
Warranty and AMC details
5. Key Best Practices
Use surge protection and proper earthing.
Avoid overloading power supplies.
Keep DVR/NVR in ventilated, secure locations.
Install clear CCTV signage for legal compliance.