Abstract: A device for a spacecraft includes electronic boards; elements that are robust to radiation, i.e.

Abstract: A device for a spacecraft includes electronic boards; elements that are robust to radiation, i.e.

Abstract: A power electronic control circuitry device comprises the following intercommunicating distinct hardware physical entities: a digital microcontroller unit (UNMC) for managing the operation of the device, hardened to withstand the effects of radiations in space; a digital fast regulation unit (UNRR) for controlling priority and real-time processes, hardened to withstand the effects of radiations in space; a digital communication unit (UNC) for communications external to the device, hardened to withstand the effects of radiations in space; a digital tracing and debugging unit (UNTD) for detecting errors in the design of the device; and a digital non-volatile memory (MRN) for storing information representative of the initial configuration of the device, hardened to withstand the effects of radiations in space.

Abstract: A power electronic control circuitry device comprises the following intercommunicating distinct hardware physical entities: a digital microcontroller unit (UNMC) for managing the operation of the device, hardened to withstand the effects of radiations in space; a digital fast regulation unit (UNRR) for controlling priority and real-time processes, hardened to withstand the effects of radiations in space; a digital communication unit (UNC) for communications external to the device, hardened to withstand the effects of radiations in space; a digital tracing and debugging unit (UNTD) for detecting errors in the design of the device; and a digital non-volatile memory (MRN) for storing information representative of the initial configuration of the device, hardened to withstand the effects of radiations in space.

Abstract: A power line communication system with DC power bus includes a power supply source, a capacitive smoothing means for smoothing the electrical voltage delivered by the source to the bus, at least one distribution box supplied by the bus and dedicated to at least one item of equipment, and an electrical current coupler of high-frequency data-carrying signals and a data modem, which are attached to the distribution box and to at least one supply line of an item of equipment.

Abstract: A method for testing a bidirectional communication interface including a transmitter and a receiver in an analogue front-end of a modem, comprising, transmitting a first test signal in a first frequency range with a first amplitude, from the transmitter. The method also includes receiving, at the receiver, a signal in a second frequency range with a first amplitude and transmitting a second test signal in a first frequency range with a second amplitude, from the transmitter. The method further includes receiving, at the receiver, a signal in a second frequency range with a second amplitude and determining a difference value based on the first and second amplitudes of the received signals.

Abstract: A method for testing a bidirectional communication interface comprising a transmitter (8) and a receiver (7) connected to a some transmission line (4) comprises the steps of a) repeatedly emitting (S3, S7, S14) a test signal in a first frequency range by the transmitter (8), each of said emitted test signals being associated to a reference time mark, b) receiving response signals (S4, S8) in a second frequency range associated to said test signals at the receiver (7) such that the reference time marks of their associated test signals are synchronized, yielding a superimposed response signal, c) based on the superimposed response signal, judging (S11, S18) the interface to be in order or not in order.

Abstract: A method for testing a bidirectional communication interface comprising a transmitter (8) and a receiver (7) connected to a same transmission line (4) comprises the steps of a) amplitude controlling the transmitter (8) so as to emit (S2) a test signal in a first frequency range at a first amplitude (A1), and detecting (S3) a first amplitude (E1) of a signal in a second frequency range received at the same time at the receiver (7), b) amplitude controlling the transmitter (8) so as to emit (S4) the test signal at a second amplitude (A2), and detecting (S5) a second amplitude (E2) of the signal received at the same time at the receiver (7), c) based on the first and second amplitudes (E1, E2) of the received signal, judging (S6, S13) the interface to be in order or not in order.

Abstract: To test for in-house wiring problems, upstream transmission profiles are tuned automatically and remotely, and reactive downstream parameter modifications indicative for in-house wiring problems are measured.