Abstract: Testing of electric vehicle charging stations (EVCS) is performed. In an active mode, the device provides or is connected with a programmable load capable of emulating the load of an electrical vehicle (EV). In passive mode, the load is an EV with the device being arranged in series between the EVCS and EV. In either case, energy delivery from the EVCS to the load is monitored by the device to determine energy measurement and billing accuracy of the EVCS. This enables a comparison to be made between a measured value of energy delivered and a metered value of energy delivered as given by the EVCS. Other measurements and safety tests may also be performed by the device. A programmable load controller is also provided for providing a variable effective load as seen by the EVCS based on one or more fixed loads.

Abstract: Testing of electric vehicle charging stations (EVCS) is performed. In an active mode, the device provides or is connected with a programmable load capable of emulating the load of an electrical vehicle (EV). In passive mode, the load is an EV with the device being arranged in series between the EVCS and EV. In either case, energy delivery from the EVCS to the load is monitored by the device to determine energy measurement and billing accuracy of the EVCS. This enables a comparison to be made between a measured value of energy delivered and a metered value of energy delivered as given by the EVCS. Other measurements and safety tests may also be performed by the device. A programmable load controller is also provided for providing a variable effective load as seen by the EVCS based on one or more fixed loads.

Abstract: Testing of electric vehicle charging stations (EVCS) is performed. In an active mode, the device provides or is connected with a programmable load capable of emulating the load of an electrical vehicle (EV). In passive mode, the load is an EV with the device being arranged in series between the EVCS and EV. In either case, energy delivery from the EVCS to the load is monitored by the device to determine energy measurement and billing accuracy of the EVCS. This enables a comparison to be made between a measured value of energy delivered and a metered value of energy delivered as given by the EVCS. Other measurements and safety tests may also be performed by the device. A programmable load controller is also provided for providing a variable effective load as seen by the EVCS based on one or more fixed loads.

Abstract: Testing of electric vehicle charging stations (EVCS) is performed using a device operable in either or both an active mode and a passive mode. In an active mode, the device provides or is connected with a programmable load capable of emulating the load of an electrical vehicle (EV). In passive mode, the load is an EV with the device being arranged in series between the EVCS and EV. In either case, energy delivery from the EVCS to the load is monitored by the device to determine energy measurement and billing accuracy of the EVCS. This enables a comparison to be made between a measured value of energy delivered and a metered value of energy delivered as given by the EVCS. Other measurements and safety tests may also be performed by the device.

Abstract: An analog to digital conversion technique for spectroscopy enables the use of detectors in which resolution varies as a function of energy, and analog to digital converters with relatively poor differential linearity without sacrificing the ability to determine the locations and magnitude of peaks within a spectrum. A transfer function that characterizes the dependence of the resolution of the system is used to convert data before the data is displayed in a histogram. The transfer function can also characterize repeatable non-linearities in the system. The invention is particularly useful for gamma ray spectroscopy with sodium iodide detectors. The transform function can be implemented in a digital circuit, an analog circuit, or in a firmware or software transform table.