Speco Technologies TVICOAXVP Active Balun
The Speco Technologies TVICOAXVP is an active balun designed to transmit TVI (TVI over Coax) video signals and 24V DC power over standard coaxial cable infrastructure. This device bridges the gap between modern TVI cameras and existing coaxial cable plant, eliminating the need for separate video and power runs while maintaining signal integrity for 5MP camera feeds.
Overview
The TVICOAXVP consolidates video and power transmission onto a single coaxial line, reducing installation complexity and material costs in retrofit and new deployments. By supporting up to 5MP resolution (2592×1944 pixel maximum), the balun accommodates mid-range TVI cameras across standard surveillance architectures. The device operates on AC/DC 24V power, providing flexible power sourcing in field installations.
Key Features
- TVI Video Transmission: Transmits TVI video over coaxial cable with support for 5MP resolution and 2592×1944 maximum pixel output
- Integrated Power Delivery: Supplies 24V DC power to remote TVI cameras via the same coaxial run, eliminating dual-conductor requirements
- AC/DC 24V Input: Flexible power compatibility supports both alternating and direct current 24V supplies, accommodating diverse field power configurations
- Compact Footprint: Measures 1.9" × 4.4" × 1" and weighs 0.33 lbs, fitting easily into tight wall boxes, conduit runs, and equipment racks
- Single Coax Infrastructure: Leverages existing RG59, RG6, or similar coaxial cable plant, reducing new cable installation labor
- ONVIF Profile I Compatibility: Supports standard video management system integration through ONVIF Profile I, enabling interoperability with compatible VMS platforms
Integration and Compatibility
The TVICOAXVP integrates into TVI-based surveillance systems requiring centralized power distribution and coaxial video transport. ONVIF Profile I support ensures compatibility with VMS platforms that recognize standardized video metadata and event formats. Installers deploying the TVICOAXVP should verify camera and DVR/NVR TVI compatibility, as the balun operates as a passive transport layer without format conversion. The device is well-suited for retrofit projects where running new separate power and video cables would incur prohibitive labor costs, particularly in multi-story residential and light commercial buildings with existing coaxial infrastructure.
Physical Specifications
The TVICOAXVP weighs 0.33 lbs and measures 1.9 inches wide, 4.4 inches tall, and 1 inch deep, making it suitable for surface mounting on wall plates, DIN rail enclosures, or integration into junction boxes. Its compact dimensions reduce spatial overhead in equipment rooms and field deployment locations.
Power and Resolution
Operating on AC/DC 24V input, the TVICOAXVP provides consistent power to TVI cameras up to the limits of coaxial voltage drop over distance. The device supports TVI video streams at 5MP resolution (maximum 2592×1944 pixels), matching the capability range of mid-tier TVI cameras and enabling detailed surveillance coverage without the overhead of full 4K systems.
Marty AllisonPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
I've evaluated the Speco TVICOAXVP in several retrofit scenarios where existing coaxial cable plant needed to support modern TVI cameras. The ability to run both video and 24V power on a single coax run significantly reduces material and labor cost, particularly in buildings where pulling new dual runs is impractical. The TVICOAXVP handles this consolidation cleanly without introducing video artifacts or power delivery issues.
Technical Highlights:
- 5MP Resolution Support: The TVICOAXVP accommodates 5MP (2592×1944) TVI camera signals, covering the mid-resolution tier where most retrofit projects sit. This avoids overengineering for sub-2MP legacy systems while remaining cost-effective relative to full 4K alternatives.
- Integrated Power Delivery: 24V DC power transmission eliminates the second conductor run, reducing drill holes, conduit usage, and connection points in the field. Coaxial voltage drop remains manageable over typical surveillance distances (typically under 400 feet for camera power budgets under 10W).
- ONVIF Profile I Compatibility: VMS integration is straightforward; the balun operates transparently at the transport layer, allowing standard ONVIF-compliant systems to discover and manage TVI cameras without proprietary middleware.
Deployment Considerations:
- Verify total coaxial run length and camera power draw; voltage drop increases with distance and current, and the balun does not regulate or boost the 24V supply. Plan accordingly for runs exceeding 300 feet or cameras exceeding 5W draw.
- Confirm TVI camera and DVR/NVR compatibility before installation. The TVICOAXVP is a transport device and does not perform format conversion; all components must natively support TVI signaling.
- Position the balun close to the DVR/NVR or power injection point to minimize coaxial voltage sag over long runs. Field testing of video quality and power delivery at the camera is recommended on installations exceeding 250 feet.
The TVICOAXVP is a straightforward, reliable choice for TVI retrofit and new installations where coaxial infrastructure is already in place. Its compact form factor and dual-function design make it a practical addition to system bills of material when video and power consolidation reduces overall project cost and complexity.
