07401550 – FLIR Systems TRB Plug to BNC Jack 75 OHM Adapter
Available now on the Avionics and Thermal Imaging Marketplace.
Overview Section
The FLIR Systems 07401550 is a precision RF Coaxial Adapter designed to interface two distinct connector standards used in high-definition video and thermal imaging systems. Specifically, it converts a TRB (Three-Lug Bayonet) Plug to a standard BNC Jack.
This adapter is critical for connecting specialized FLIR thermal cameras or airborne sensor gimbals to standard testing equipment or video recording systems. The "75 OHM" specification is vital, as it ensures the adapter is impedance-matched for high-frequency video signals, preventing signal reflections and ensuring maximum image clarity. The TRB interface is often used in military and aerospace applications because its three-lug locking mechanism provides superior stability under high vibration compared to the standard two-lug BNC.
Key Features Section
TRB to BNC Conversion: Allows for seamless connection between specialized FLIR equipment (TRB) and standard video/test cabling (BNC).
Three-Lug Bayonet (TRB): Features the ruggedized three-lug locking system, which is standard in MIL-STD-1553 data bus and high-vibration aerospace video applications.
75 OHM Impedance: Specifically engineered for video and high-speed data to maintain signal integrity and prevent "ghosting" or signal loss.
Aerospace Grade Durability: Manufactured to withstand the rigors of flight line testing and integrated airborne sensor operations.
Gold-Plated Contacts: Typically features gold-plated center contacts to ensure low electrical resistance and protection against oxidation.
Compact Form Factor: The "In-Series" design minimizes the physical footprint and weight added to the cable assembly.
Technical Specifications Section
Part Number: 07401550
OEM Manufacturer: FLIR Systems (Teledyne FLIR)
Connector A: TRB Plug (Male, 3-Lug Bayonet)
Connector B: BNC Jack (Female, 2-Lug Bayonet)
Impedance: 75 OHM (Optimized for Video)
Frequency Range: DC to 2 GHz (Typical for high-quality 75 Ohm adapters)
Body Material: Brass or Stainless Steel with Nickel or Tri-Metal plating.
Dielectric Type: PTFE (Teflon) for high-temperature stability.
Application: Thermal Imaging Systems, EO/IR Gimbals, MIL-STD-1553 Testing.
Equipment Compatibility Section
FLIR Airborne Gimbals: Used with Star SAFIRE, UltraMedia, and Talon series EO/IR sensor suites for video output monitoring.
MIL-STD-1553 Test Gear: Compatible with data bus analyzers that utilize TRB interfaces for signal tapping.
Broadcast and Security Monitors: Allows FLIR sensors to be viewed on standard 75 Ohm BNC-equipped monitors or DVRs.
Note: While TRB connectors look similar to standard BNC connectors, they are not intermateable. Forcing a connection can damage the center pin. Always use the 07401550 adapter to bridge these two standards.
Applications Section
Maintenance and Diagnostics: Connecting a FLIR sensor turret directly to a handheld video monitor or oscilloscope for field troubleshooting.
System Integration: Retrofitting older aircraft displays (BNC) with modern FLIR thermal imaging units (TRB).
Laboratory Testing: Providing a stable interface for bench-testing sensor performance using standardized RF test equipment.
Why Choose the 07401550?
The 07401550 is an essential tool for signal fidelity. In high-resolution thermal imaging, even a small impedance mismatch can cause significant "noise" or "snow" in the video feed, potentially masking critical targets during a mission. By using the OEM-certified 75 Ohm adapter, you ensure that the complex video signals from the FLIR camera are delivered to the monitor with zero degradation. Furthermore, the TRB's three-lug design ensures that the connection will not vibrate loose during flight, a common failure point for standard BNC connectors in high-performance aircraft.
The technical necessity of the 07401550 lies in the Voltage Standing Wave Ratio (VSWR) management. In a 75 Ohm video circuit, any change in the physical path—like an adapter—can create an impedance "bump." This adapter is precision-machined to maintain a constant 75 Ohm environment through the transition from the TRB interface to the BNC interface. This minimizes signal reflections back to the source, which is critical for maintaining the high frame rates and thermal sensitivity of modern FLIR EO/IR systems. Without the correct impedance matching provided by this adapter, the system may suffer from reduced dynamic range and poor contrast in the thermal display.
Note: The 07401550 is a specialized RF component. Ensure both connectors are clean and free of debris before mating. Inspect the three-lug locking mechanism regularly for wear, especially in high-vibration environments.
Documentation
FLIR Systems Accessory Catalog: Essential for verifying adapter part numbers for specific camera models.
MIL-STD-1553: Reference for the mechanical standards of TRB (Triaxial/Three-lug) connectors.