The R&S ZN-Z51 allows a free/mixed port configuration with possible connector types
N(m/f), 3.5mm (m/f), 7/16 (m/f) and 4.3-10 (f).
With an N(f)-type CalU serving as base unit, for each available port an alternative connector
type N(m), 3.5mm (m/f), 7/16 (m/f) or 4.3-10 (f) can be selected. For N(f)-type models
alternative connectors can be also be retrofitted, but the calibration unit has to be sent to
service for that and has to be characterized again.
See the data sheet for ordering information.
The frequency range for 7/16 connector ports is limited to 100 kHz to 7.5 GHz.