Hi,
This is mainly a feature request but it would be nice if the user has the option to define a frequency sweep in the opposite direction for a measurement channel. Currently for instance, if measuring S21 for a DUT, we set
from qcodes.instrument_drivers.rohde_schwarz.ZNB import ZNB
station.add_component(
ZNB(
name="VNA",
address="<ip_address>",
init_s_params=True,
)
)
station.VNA.S21.frequency_start(500e6)
station.VNA.S21.frequency_stop(1000e6)to perform the measurement. However, QCoDeS gives out an error when setting the attribute frequency_stop to be lesser than frequency_start.
Looking up the manual for the ZNB40 VNA in particular, we find a section on independently defining the port configuration via the K4 option (see this FAQ from R&S). Interestingly enough, atleast on the VNA we have at hand I was unable to find this option via the in-built local GUI of the VNA.
It would be nice if the driver could include this feature.
Hi,
This is mainly a feature request but it would be nice if the user has the option to define a frequency sweep in the opposite direction for a measurement channel. Currently for instance, if measuring S21 for a DUT, we set
to perform the measurement. However, QCoDeS gives out an error when setting the attribute
frequency_stopto be lesser thanfrequency_start.Looking up the manual for the ZNB40 VNA in particular, we find a section on independently defining the port configuration via the K4 option (see this FAQ from R&S). Interestingly enough, atleast on the VNA we have at hand I was unable to find this option via the in-built local GUI of the VNA.
It would be nice if the driver could include this feature.