To carry out measurements in frequency domain (FD) indoors the expensive anechoic chambers are necessary. Time domain (TD) method allows to eliminate the reflections from adjacent objects. Therefore it is possible to carry out TD measurements indoors without anechoic chamber. The TD method lets to use considerably cheap signal generator and receiver than those used in FD. The additional advantage of outdoor TD measurement systems is interference immunity. The report contains indoor and outdoor TD antenna measurement systems utilizing Geozondas Ltd equipment description. The errors are analyzing. It is possible to use the same signal receiver, i.e. sampling oscilloscope, both in frequency and time domain measurements. The TD antenna measurements are possible to carry out in far and near fields

This study presents a system for precisely measuring pulsed magnetic fields with high amplitude and microsecond duration with minimal interference. The system comprises a probe with an advanced magnetic field sensor and a measurement unit for signal conversion, analysis, and digitization. The sensor uses a thin nanostructured manganite La-Sr-Mn-O film exhibiting colossal magnetoresistance, which enables precise magnetic field measurement independent of its orientation. Films with different compositions were optimized and tested in pulsed magnetic fields. The measurement unit includes a pulsed voltage generator, an ADC, a microcontroller, and an amplifier unit. Two versions of the measurement unit were developed: one with a separate amplifier unit configured for the sensor positioned more than 1 m away from the measurement unit, and the other with an integrated amplifier for the sensor positioned at a distance of less than 0.5 m. A bipolar pulsed voltage supplying the sensor minimized the parasitic effects of the electromotive force induced in the probe circuit. The data were transmitted via a fiber optic cable to a PC equipped with a special software for processing and recording. Tests with 20–30 μs pulses up to 15 T confirmed the effectiveness of the system for measuring high pulsed magnetic fields.