Abstract: A routing facility (1) for a subsea electronics module (7) has on a single circuit board (2) a facility (5) for routing data packets between segments of a differential serial bus, and at least one input/output interface (14, 15, 16) for digital and/or analog process values, wherein the process values are accessible via the differential serial bus.

Abstract: In a method for controlling an electronic device (1) with a programmable component and an independent microcontroller (10) and in such an electronic device (1), by the microcontroller (10), the component is monitored, a malfunction of the component is identified and the component is reprogrammed.

Abstract: A routing facility (1) for a subsea electronics module (7) has a microcontroller (3), a field programmable gate array (4) and at least two router resources (5) on a single circuit board (2), each router resource (5) comprising a respective local transceiver (9) for a differential serial bus and a respective remote transceiver (10) for the differential serial bus, wherein each local transceiver (9) is connected with the corresponding remote transceiver (10) and with the field programmable gate array (4) that is able to route data packets between the router resources (5).

Abstract: A modem, in particular for subsea power line communication, has electronic components on a circuit board, and a metal encapsulation, wherein the encapsulation forms at least two chambers separated by at least one wall, wherein each of the chambers surrounds at least one of the electronic components.

Abstract: A method for communicating binary data via an electric signal of a subsea power line includes establishing a point-to-point connection between a subsea electronic unit and a topside electronic unit for transmitting binary data via the electric signal of the subsea power line; the subsea electronic unit modulating binary data onto said electric signal using orthogonal frequency division multiplexing (OFDM), using 10-200 individual carrier bands in a selected radio frequency range; communicating the OFDM-modulated binary data via the subsea power line to the topside electronic unit; and the topside electronic unit demodulating the OFDM-modulated binary data, including passing the electric signal through a low-pass filter and passing said radio frequency with the modulated binary data through a band-pass filter.

Abstract: In a method and a modem (1) for communicating binary data via an electric signal (E, E1, E2) of a subsea power line (2), the binary data is modulated onto the electric signal (EmodRF, E1modRF, E2modRF) using orthogonal frequency division multiplexing (OFDM).

Abstract: An electronic subsea device (1), in particular a wellhead control unit, has a modem (2) for subsea power line (3) communication, and an alternating current/direct current power supply (33) that is a switching power supply having a fixed switching frequency of more than 400 kHz.

Abstract: The invention relates to a routing facility (1) for a subsea electronics module (7), comprising on a single circuit board (2) means (5) for routing data packets between segments of a differential serial bus, and at least one input/output interface (14, 15, 16) for digital and/or analogue process values, wherein said process values are accessible via said differential serial bus.

Abstract: A routing facility (1) for a subsea electronics module (7) has a microcontroller (3), a field programmable gate array (4) and at least two router resources (5) on a single circuit board (2), each router resource (5) comprising a respective local transceiver (9) for a differential serial bus and a respective remote transceiver (10) for the differential serial bus, wherein each local transceiver (9) is connected with the corresponding remote transceiver (10) and with the field programmable gate array (4) that is able to route data packets between the router resources (5).

Abstract: A modem, in particular for subsea power line communication, has electronic components on a circuit board, and a metal encapsulation, wherein the encapsulation forms at least two chambers separated by at least one wall, wherein each of the chambers surrounds at least one of the electronic components.

Abstract: In a method for controlling an electronic device (1) with a programmable component and an independent microcontroller (10) and in such an electronic device (1), by the microcontroller (10), the component is monitored, a malfunction of the component is identified and the component is reprogrammed.