PoE Magjacks Driving Reliable Smart City Surveillance Systems

Case Study: PoE Magjacks Driving Reliable Smart City Surveillance Systems

The PoE Magjack Solution

A global security solutions provider faced several hurdles when planning a city-wide rollout of thousands of PTZ (Pan-Tilt-Zoom) surveillance cameras:

• High-Bandwidth Video Streams: With AI analytics and 4K video quality, a 2.5G Base-T Ethernet connection was required to eliminate network bottlenecks.
• Reliable Power over Ethernet (PoE+): Each unit needed IEEE 802.3at compliance, delivering up to 30W to support camera motors and integrated heating systems.
• Rugged Environmental Tolerance: Devices would be exposed to temperatures from -40°C to +85°C, as well as electrical interference from nearby power infrastructure.

Initial prototypes using standard RJ45 connectors resulted in unstable performance, with signal degradation under full PoE load and frequent data errors during high-temperature operation.

The PoE Magjack Solution

Key features included:

1. High-Frequency Signal Integrity: Tuned internal magnetics ensured minimal insertion loss and crosstalk for multi-gigabit Ethernet.
2. Enhanced PoE+ Performance: Built-in transformers with reinforced windings supported 30W PoE+ delivery without interfering with data transmission.
3. Industrial Durability: Wide operating temperature range and EMI shielding guarantee stable performance in outdoor deployments.

Results of the Implementation

After adopting PoE Magjacks, the surveillance project achieved significant improvements:

• Stable, Error-Free Data: 2.5G Ethernet links remained reliable even under full PoE+ load.
• Faster Installation: Reduced failures during deployment, minimized troubleshooting, and on-site delays.
• Long-Term Reliability: The system maintained high uptime with low maintenance costs, operating seamlessly across all weather conditions.