RK 40-839/10M

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1. Introduction to Circular Cable Assemblies
   Circular cable assemblies are cables that have an annular shaped cross-section and typically includes a conductor surrounded by insulation layers, cables shields, and strain reliefs. Typically, the cable and connector components are designed with specific characteristics to meet application requirements. Specialized cable assemblies are used in many different—often specialized—applications.
2. RK 40-839/10M Application Field and Working Principle
   The RK 40-839/10M cable assembly has been designed for an application in an aviation environment. Primarily, the RK 40-839/10M is used in avionics, which is the science and technology of aircraft control and operation. It is also suitable for any electrical and environmental conditions that require excellent physical protection and electrical shielding. The RK 40-839/10M is a high-speed, low-inductance, low-mass, and low-capacitance three-stage differential pair cable assembly. It uses two 38 AWG polyester-insulated conductors as differential signal pairs, two 60 AWG polyester-insulated conductors as a drain/shield, and two 52 AWG polyester-insulated conductors as a jumper/shield. All core conductors and shield components are laid up in a pair of dense inner fillers which are wrapped in an EMI/RFI shielding jacket. The RJ 40-839/10M provides EMI protection while maintaining maximum integrity of internal data transmissions.
3. Working Principle of RK 40-839/10M
   The principal function of the RK 40-839/10M is to provide full protection from environmental influences such as electro-magnetic interference (EMI). The assembly is capable of conducting high frequency signals with minimal signal loss and interference. Its three-stage structure is designed to provide optimal transmission characteristics and maintain signal data integrity. The three stages consist of a signal pair, a drain/shield, and a jumper/shield, all of which are surrounded by a lightweight aluminium/polyester shielding jacket. This shielding is constructed with high-performance aluminum strands which are woven in an even pattern to form a tightly wrapped shielded structure. The two inner conductors are also shielded by an inner filled jacket. This inner filled jacket is composed of air, low-GCF (glass-bearing conductive fillers), and dielectric materials. The air reduces capacitance between the two conductors while the LCF (low-carbon-fiber) reduces the inductive reactance. The dielectric material further reduces signal-to-signal interaction. All of these elements work together to reduce the electromagnetic emission levels and optimize the assembly’s transmission characteristics.
4. Benefits of RK 40-839/10M
   The RK 40-839/10M assembly boasts a high-speed, low-inductance, low-mass, and low-capacitance construction which ensures that signals remain pristine and interference-free in aerospace environments. The assembly’s lightweight shielding jacket provides further protection against EMI and RFI noise. The jacket also allows for superior data transmission rates and lower signal losses. Additionally, the assembled cable components are physically stable and durable, meaning the assembly can withstand harsh operating conditions. Finally, the assembly’s connectors are compliant with military specifications and the RJ 40-839/10M has been certified to mil-c-38999 and mil-std-1553 standards.
5. Conclusion
   The RK 40-839/10M cable assembly is a high-performance, low-inductance, low-mass, and low-capacitance three-stage differential pair cable assembly designed for aerospace applications. Its shielding jacket, comprised of high-performance aluminium, provides excellent protection against electromagnetic interference, radio frequency interference, and signal loss. The assembly’s connectors are compliant with military specifications and has been certified to mil-c-38999 and mil-std-1553 standards. The RK 40-839/10M is a reliable cable assembly for any aerospace application that requires optimal data transmission rates and low signal losses in harsh environmental conditions.

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