Aiming at the problem of the noise powers and impedances of the sense and reference noise sources traditional noise thermometer

cannot be matched simultaneously

a noise thermometer system with quantum voltage calibration is designed.In the system

a comb-like voltage waveform is synthesized with the quantum voltage arbitrary waveform synthesis technique as reference noise

and a digital correlator is constructed with highprecision digitizers PXI—5922.The accurate measurement on the thermodynamic temperature of triple phase point of water is realized

the new system operates well.