A transceiving device includes a calibration signal generation unit, a phase adjusting unit, a transmission unit, a receiving unit, and a calibration unit. In a calibration mode, the calibration signal generation unit generates an in-phase (I) test signal and a quadrature (Q) test signal. The phase adjusting unit adjusts the I test signal and the Q test signal to generate an adjusted I test signal and an adjusted Q test signal according to a phase controlling signal. The transmission unit generates a radio frequency (RF) signal according to the adjusted I test signal and the adjusted Q test signal. The receiving unit receives the RF signal so as to generate an I receiving signal and a Q receiving signal. The calibration unit generates the phase controlling signal according to the I test signal, the Q test signal, the I receiving signal, and the Q receiving signal.

There is provided fiber-coaxial amplifier device (10) comprising at least one output (14) and a test point (26) associated with the at least one output (14), wherein alternative first and second electrical paths (36, 38) are connectable to the at least one output (14), the first path (36) connectable to the at least one output (14) whilst bypassing the test point, the second path (38) connectable to both the at least one output (14) and the test point (26), and a relay (30) operable to connect one of the first path or the second path to the at least one output (14). The fiber-coaxial amplifier device (10) is configured for signals complying with Extended Spectrum DOCSIS.

A monitoring system includes an array of optical sensors disposed within a transformer tank. Each optical sensor is configured to have an optical output that changes in response to a temperature within the transformer tank. An analyzer is coupled to the array of optical sensors. The analyzer is configured to determine a sensed temperature distribution based on the sensed temperature. The sensed temperature distribution is compared to an expected distribution. Exterior contamination of the transformer tank is detected based on the comparison.

A monitoring system includes an array of optical sensors disposed within a transformer tank. Each optical sensor is configured to have an optical output that changes in response to a temperature within the transformer tank. An analyzer is coupled to the array of optical sensors. The analyzer is configured to determine a sensed temperature distribution based on the sensed temperature. The sensed temperature distribution is compared to an expected distribution. Exterior contamination of the transformer tank is detected based on the comparison.

An electric filtering device (200) for filtering Repetitive Electrical Impulse Noise (REIN) in a fixed-access telecommunications network (100), the electric filtering device comprising: a REIN filter (210), said REIN filter comprising a first electrical contact (220-1) and a second electrical contact (220-2) for connecting to a telecommunications cable (140) of the fixed-access telecommunications network; an enclosure (230) for enclosing the REIN filter; an input (250-1) and an output (250-2), formed as part of the enclosure, each for receiving a telecommunications cable (140) so as to be connected to the first and the second electrical contacts, thereby to connect the REIN filter to the fixed-access telecommunications network; a coupling formation (260) for coupling the electric filtering device to an external distribution point (130) for a telecommunications cable of the fixed-access telecommunications network.

An electric filtering device (200) for filtering Repetitive Electrical Impulse Noise (REIN) in a fixed-access telecommunications network (100), the electric filtering device comprising: a REIN filter (210), said REIN filter comprising a first electrical contact (220-1) and a second electrical contact (220-2) for connecting to a telecommunications cable (140) of the fixed-access telecommunications network; an enclosure (230) for enclosing the REIN filter; an input (250-1) and an output (250-2), formed as part of the enclosure, each for receiving a telecommunications cable (140) so as to be connected to the first and the second electrical contacts, thereby to connect the REIN filter to the fixed-access telecommunications network; a coupling formation (260) for coupling the electric filtering device to an external distribution point (130) for a telecommunications cable of the fixed-access telecommunications network.

Tools and techniques are described to automate commissioning of physical spaces. Controllers have access to databases of the devices that are controlled by them, including wiring diagrams and protocols, such that the controller can automatically check that each wire responds correctly to stimulus from the controller. Controllers also have access to databases of the physical space such that they can check that sensors in the space record the correct information for device activity, and sensors can cross-check each other for consistency. Once a physical space is commissioned, incentives can be sought based on commissioning results.

Tools and techniques are described to automate commissioning of physical spaces. Controllers have access to databases of the devices that are controlled by them, including wiring diagrams and protocols, such that the controller can automatically check that each wire responds correctly to stimulus from the controller. Controllers also have access to databases of the physical space such that they can check that sensors in the space record the correct information for device activity, and sensors can cross-check each other for consistency. Once a physical space is commissioned, incentives can be sought based on commissioning results.

A power distribution monitoring system is provided that can include a number of features. The system can include a plurality of power line sensing devices configured to attach to individual conductors on a power grid distribution network. The sensing devices can be configured to measure and monitor, among other things, current values and waveforms, phase voltage, conductor current, phase-to-phase voltage, conductor temperatures, ambient temperatures, vibration, wind speed and monitoring device system diagnostics. The sensing devices can include an equipotential surface configured to reduce incumbent E-field disturbance of the conductor. The sensing devices can include a monitor-device conductor shell sized and shaped to position the equipotential surface at a distance with respect to the conductor regardless of diameter of the conductor. Methods of installing and protecting the system are also discussed.

A power distribution monitoring system is provided that can include a number of features. The system can include a plurality of power line sensing devices configured to attach to individual conductors on a power grid distribution network. The sensing devices can be configured to measure and monitor, among other things, current values and waveforms, phase voltage, conductor current, phase-to-phase voltage, conductor temperatures, ambient temperatures, vibration, wind speed and monitoring device system diagnostics. The sensing devices can include an equipotential surface configured to reduce incumbent E-field disturbance of the conductor. The sensing devices can include a monitor-device conductor shell sized and shaped to position the equipotential surface at a distance with respect to the conductor regardless of diameter of the conductor. Methods of installing and protecting the system are also discussed.