  The paper describes the realization process of the high frequency power
standard based on a twin broadband microcalorimeter designed for effective
efficiency measurement of coaxial power sensors with indirect heating
thermocouples. The presented procedures involve microcalorimeter measurement
and calibration steps, parameters computation and systematic errors correction
for both long-term and accelerated algorithms. Also, a new method for
determining the key parameters of high frequency power standards is proposed.
