The R&S NRX offers a remote emulation feature that makes it possible to control the instrument by commands other than the built-in native SCPI commands. This feature allows you to replace power meters, e.g. power meters from other manufacturers or predecessors, with the R&S NRX without having to change the remote control code.

For emulating Keysight power meters, you need the NRX KS emulation mode (R&S NRX-K301) option. It is for Keysight/Agilent N1911A/N1912A, N432A T E4418A/E4419A (software license)