The R&S®ZND supplements the R&S®ZNB family of net‑
work analyzers. The unidirectional R&S®ZND base model
can be used to measure the S‑parameters S11 and S21. The
R&S®ZND can easily be upgraded to provide bidirectional
measurements and to extend the frequency range up to
8.5 GHz. Users can tailor the instrument to their specific
needs in RF component production and development.