Configured for impedance matching and signal reflection suppression in distributed control networks, the ABB NKTT01-3, also cataloged as the NKTT01-3 Infi-Net Termination Cable, operates as a dedicated hardware component for terminating communication bus loops within Bailey Infi 90 architectures.

Part Identification & Specification Matrix

Hardware Specifications

Network Communication & Backplane Bus Parameters

The hardware integrates seamlessly with backplane bus communication velocity licences to maintain signal integrity across high-speed node drops. Proper matching prevents data packet corruption by suppressing high-frequency reflections on deterministic networks. Firmware flash compatibility and network protocol stacks rely on clean physical layer signal transitions managed directly by this termination assembly.

Package Contents & Ordering Info

• 1 x ABB NKTT01-3 Infi-Net Termination Cable (Part Number: NKTT01-3)
• 1 x Protective Coaxial Connector Cap Set
• 1 x Technical Compliance Documentation Leaflet

Physical Installation and Shielding Guidelines

• Thread the coaxial connectors onto the designated node ports, ensuring secure mechanical engagement without cross-threading.
• Maintain a minimum bending radius along the cable run to prevent deformation of the internal 75 ohm dielectric core.
• Ensure the outer shielding braid maintains continuous low-impedance contact with the cabinet grounding plane.
• Keep termination assemblies away from high-voltage power lines to prevent induced electromagnetic noise on the communication bus.

Frequently Asked Questions

• Q: What is the primary function of this termination cable within the network architecture?
• A: It provides precise impedance matching to absorb signal reflections at the ends of communication bus segments.
• Q: What is the nominal characteristic impedance rating of the assembly?
• A: The cable maintains a strict characteristic impedance of 75 ohms +/-3 ohms across its operating frequency.
• Q: Does this passive component require an external power connection?
• A: No, it operates entirely as a passive signal-matching and termination element without active power rails.
• Q: What maximum signal attenuation is specified for the cable assembly?
• A: Signal attenuation remains at or below 0.20 dB/m evaluated at a 5 MHz reference frequency.
• Q: What environmental temperature range is permitted for deployment?
• A: The assembly functions reliably within an ambient operating range of -20 deg C to +80 deg C.
• Q: How does proper shield grounding affect network stability?
• A: Solid shield grounding shunts high-frequency electromagnetic interference away from the internal signal conductor.
• Q: Can this cable be used interchangeably in non-Bailey control systems?
• A: It is specifically engineered to meet the physical and electrical parameters of Bailey Infi 90 networks.
• Q: What precautions should be taken during physical installation?
• A: Avoid sharp bends and excessive mechanical pulling force to protect the internal coaxial structure.