A system, apparatus, and method for determining ultrasonic vital product data of coaxial cables and side-band communications through a water medium of a water-cooling system and/or apparatus. The system may include a first electronic device. The system may also include a second electronic device. The system may also include one or more cables running between the first electronic device and the second electronic device. The system may also include a water jacket filled with water encasing the one or more cables. The system may also include one or more transducers connected to the water jacket, the one or more transducers configured to send signals through the water to gather information about each cable. The system may also include a computer system connected to the one or more transducers, where the computer system is configured to control the one or more transducers.

An indoor rated communications cable includes a communications carrying medium surrounded by a jacket. A material used to form the jacket is a polymer including a microencapsulated ammonium octamolybdate (AOM) additive therein. In some embodiments, the polymer may include polyvinyl chloride (PVC), fluorinated ethylene propylene (FEP) or polyolefin (PO). One or more additional flame retardants may also be added to the polymer. The communications cable may be a twisted pair, fiber optic or coaxial cable. The present invention also provides a method of forming the communications cable.

A sheath wave barrier (2) for suppressing electromagnetic RF coupling phenomena of an electrical cable (4) at a predetermined suppression frequency (coo) in a magnetic resonance (MR) imaging or spectroscopy apparatus, wherein the cable is configured as a shielded cable with at least one inner conductor (6) and a peripherally surrounding electrically conducting cable sheath (8), comprises a segment of said shielded cable and a primary inductor formed from said shielded cable segment between a first cable location (12) and a second cable location (14). A secondary inductor (16) formed by a conductor is concentrically arranged within or around the primary inductor between said first and second cable locations. The secondary inductor is electrically connected to the cable sheath at said first and second cable connections over respective first and second RLC network members (M1, M2), the primary and secondary inductors being configured in compensating manner such that magnetic field generated by said primary and secondary inductors is substantially cancelled in any region surrounding the sheath wave barrier.

The present invention relates to the technical field of underwater communications, and discloses a bridging transmission device for underwater wireless signals, which includes a coaxial cable and two conversion assemblies. The coaxial cable can transmit the weak electric signal. The transmission device transmits and converts wireless signals by means of signal bridging between two or among more independent intelligent terminal devices, converts the electromagnetic wave signal and the weak electric signal to each other through two groups of conversion antennas, and transmits the weak electric signal under water through the coaxial cable, so the purpose of the remote transmission of underwater wireless signals can be achieved. The conversion assembly has no need to be wired to the intelligent terminal device through an interface, so the waterproof performance is good, and the universality is high.

A coaxial cable is composed of a conductor, an insulator covering a periphery of the conductor, a shield layer covering a periphery of the insulator, and a sheath covering a periphery of the shield layer. The shield layer is configured to include a lateral winding shielding portion with a plurality of metal wires being helically wrapped around the periphery of the insulator, and a batch plating portion made of a hot-dip plating covering respective peripheries of the lateral winding shielding portion. The shield layer includes a joining portion where the metal wires adjacent to each other in a circumferential direction are joined with each other with the batch plating portion at a spaced portion where the adjacent metal wires are spaced apart from each other, and the non-joining portion where the metal wires adjacent to each other in the circumferential direction are not joined with each other with the batch plating portion at the spaced portion. A length of the non-joining portion along a cable longitudinal direction is shorter than a winding pitch of the lateral winding shielding portion.

A data transmission cable includes a plurality of juxtaposed wires, a plastic layer enclosing on the wires integrally and a metallic shielding layer arranged on an outer side of the plastic layer. The metallic shielding layer has a length matching the data transmission cable and a width greater than the circumferential extension length of the data transmission cable, two ends of the metallic shielding layer in a width direction are compacted and bonded to each other on one side of the data transmission cable in the width direction, to form a shielding portion covering the plastic layer and a compacting portion connected to one side of the shielding portion.

A guarded coaxial cable assembly including at least a pair of conductors, one or more rails, and a jacket covering these parts such as a first rail extending alongside two nearby conductors, the rail and the conductors embedded in an outer electrically insulating jacket, the outer jacket having a pair of generally opposed bearing surfaces for bearing transverse loads, the rail operative to reduce outer jacket deformations resulting from transverse loads applied to the bearing surfaces; and, the orientation of the rail and the conductors within the outer jacket operative to limit conductor or conductor jacket deformations resulting from transverse loads applied to the bearing surfaces.

In one embodiment, a switched amplifier is provided to amplify a data transmission. The switched amplifier may use a control signal that is received via a control signal channel in a transmission cable. Also, the switched amplifier may detect signal power to determine whether the data transmission is received at one of a first port and a second port. Data transmissions via the data transmission channel occur in a first direction and a second direction in a same frequency range in a time division multiplex (TDD) mode. Also, the control signal and data transmission are diverted from the transmission cable that transmits a type of signal different from the control signal and the data transmission. The switched amplifier is controlled based on the control signal or the signal power detected. The amplified signal is diverted in the first direction or the second direction via the data transmission channel back to the transmission cable.

A cable is described, including a plurality of substantially parallel conductors extending along a length of the cable and generally lying in a plane of the conductors, and a dielectric film comprising a plurality of pairs of structures, and folded upon itself along a longitudinal fold line so that the structures in each pair of structures face, and are aligned with, each other, each conductor of the plurality of conductors disposed between the structures in a corresponding pair of structures.

A fire resistant corrugated coaxial cable is described that employs a high-temperature, insulating alkaline earth silicate (AES) wool dielectric. The AES wool dielectric is devoid of water as a constituent. The AES wool may be survivable under conditions of high heat, such as temperatures specified by common fire test standards (e.g., 1850° F./1010° C. for two hours). The cable is configured to maintain a relatively coaxial relation between a center conductor and an outer conductor even under aforementioned fire tests. A layer of ceramifiable silicone rubber or refractory fiber wrap can surround the outer conductor and continues to insulate it from the outside if a low-smoke zero-halogen (LSZH) jacket burns away.