The four modular R&S®NRPC calibration kits are used to calibrate power sensors of the R&S®NRP, R&S®FSH and R&S®NRV families, as well as other makes, to a very high level of accuracy. Following calibration, the sensors are within the specified calibration uncertainties and usually remain below these uncertainties. Each calibration kit includes a highly accurate power standard that is traceable to primary power standards of the Physikalisch- Technische Bundesanstalt (PTB, Germany’s national metrology institute) by means of a calibration certified by the Deutsche Akkreditierungsstelle (DAkkS, Germany’s national accreditation body).