The disclosure relates to a transceiver device, an electronic control unit and an associated method. The transceiver device is suitable for communicating between one or more network protocol controllers and a network bus and comprises: first interface circuitry configured to communicate with the one or more network protocol controllers; second interface circuitry configured to communicate with the one or more network protocol controllers; and selector circuitry configured to switch communication with the one or more network protocol controllers from the first interface circuitry to the second interface circuitry in response to a communication error in data carried on the first interface circuitry.

The disclosure relates to a transceiver device, an electronic control unit and an associated method. The transceiver device is suitable for communicating between one or more network protocol controllers and a network bus and comprises: first interface circuitry configured to communicate with the one or more network protocol controllers; second interface circuitry configured to communicate with the one or more network protocol controllers; and selector circuitry configured to switch communication with the one or more network protocol controllers from the first interface circuitry to the second interface circuitry in response to a communication error in data carried on the first interface circuitry.

A wireless microphone system comprises system equipment (for example, rack-mounted equipment including receivers/transceivers, distribution amplifier), one or more transmission line accessories, and a transmission line network connecting the accessories with the system equipment. The transmission line accessory compensates for downlink RF losses on transmission lines between accessories and between an accessory and system equipment. Compensation parameters for the transmission line accessory is determined by the system equipment by generating an uplink RF test signal by an RF source at the system equipment. The RF source may be varied over a plurality of frequencies to determine the compensation parameters over the plurality of frequencies. The system equipment subsequently instructs the transmission line accessory to configure an adjustable RF gain circuit (and also possibly a compensation filter) accordingly. The wireless microphone system may also discover accessories on the transmission line network to facilitate installation and maintenance.

A wireless microphone system comprises system equipment (for example, rack-mounted equipment including receivers/transceivers, distribution amplifier), one or more transmission line accessories, and a transmission line network connecting the accessories with the system equipment. The transmission line accessory compensates for downlink RF losses on transmission lines between accessories and between an accessory and system equipment. Compensation parameters for the transmission line accessory is determined by the system equipment by generating an uplink RF test signal by an RF source at the system equipment. The RF source may be varied over a plurality of frequencies to determine the compensation parameters over the plurality of frequencies. The system equipment subsequently instructs the transmission line accessory to configure an adjustable RF gain circuit (and also possibly a compensation filter) accordingly. The wireless microphone system may also discover accessories on the transmission line network to facilitate installation and maintenance.

An information processing apparatus capable of preventing erroneous connection at a time of connection using cables without deteriorating versatility. The information processing apparatus is communicable with an external device via two cables. A first connector is connected to one of the two cables and has terminals, which include a first terminal that is arranged at a first position and receives a predetermined signal output according to start-up of the external device. A second connector of a same shape as the first connector is connected to another of the two cables and that has terminals, which are identical to the terminals of the first connector in number and arrangement and include a second terminal that is not used to output a signal and is arranged at a position corresponding to the first terminal. A controller notifies of an error through a notification device when the second terminal receives the predetermined signal.

A method and system of determining the location of an earth fault within a loop of devices is disclosed. Upon the detection of an earth fault within the loop comprising a plurality of devices, a first device within the loop is isolated along with a second device. While the first device and the second device are isolated, it is determined if the earth fault still exists. If the earth fault no longer exists, then determine that the earth fault is located between the first device and the second device. This can be iterated through each adjacent pair of devices in the loop to localize the earth fault between the devices.

A method and system of determining the location of an earth fault within a loop of devices is disclosed. Upon the detection of an earth fault within the loop comprising a plurality of devices, a first device within the loop is isolated along with a second device. While the first device and the second device are isolated, it is determined if the earth fault still exists. If the earth fault no longer exists, then determine that the earth fault is located between the first device and the second device. This can be iterated through each adjacent pair of devices in the loop to localize the earth fault between the devices.

A cable length calculation system (10) includes a controller (20) and a plurality of communication apparatuses (30) which are connected via a cable (40). A measurement master which is one communication apparatus (30) among the plurality of communication apparatuses (30) counts as a first number, the number of clock signals output by an oscillator from a time of transmitting a measurement packet until a time of receiving a response packet. A measurement slave which is a communication apparatus (30) different from the measurement master among the plurality of communication apparatuses (30) counts as a second number, the number of clock signals output by an oscillator from a time of receiving the measurement packet transmitted by the measurement master until a time of transmitting the response packet. The controller (20) calculates a length of the cable (40) between the measurement master and the measurement slave based on the first number and the second number.

A cable length calculation system (10) includes a controller (20) and a plurality of communication apparatuses (30) which are connected via a cable (40). A measurement master which is one communication apparatus (30) among the plurality of communication apparatuses (30) counts as a first number, the number of clock signals output by an oscillator from a time of transmitting a measurement packet until a time of receiving a response packet. A measurement slave which is a communication apparatus (30) different from the measurement master among the plurality of communication apparatuses (30) counts as a second number, the number of clock signals output by an oscillator from a time of receiving the measurement packet transmitted by the measurement master until a time of transmitting the response packet. The controller (20) calculates a length of the cable (40) between the measurement master and the measurement slave based on the first number and the second number.

A waveguide interface is disclosed. The disclosed waveguide interface comprises: an inner boundary region extending peripherally around a cavity, a recessed region extending peripherally around the inner boundary region, and a plurality of protrusions extending from the recessed region.