Rohde & Schwarz 1145.1010.04/05/06, Operating Manual

Page: 389 / 813

R&S
®
ZVA/ZVB/ZVT Channel Menu
1145.1084.12 4.227 E-6
•
Select a standard Type and its Gender (for polarized/not sexless connector types and if the port
assignment is not restricted) and assign a Label .
•
Restrict Port Assignment
•
Select S-Params From
Qualify whether the standard is described by a Circuit Model from which the analyzer can
calculate the S-parameters or by a table of measured or simulated S-parameters stored in a
Touchstone file. Pressing the
Read Data from File... button opens a file selection dialog where
the appropriate file type (*.s1p for one-port standards and *.s2p for two-port standards) is
automatically selected.
The Sliding Match and Attenuation are special standard types which must be described
by a circuit model. The controls in the S-Params From panel are disabled.
For two-port standards described by a *.s2p file, the implicit ports 1 and 2 (given by the order of
S-parameters Re(S11) Im(S11) Re(S21) Im(S21) Re(S12) Im(S12) Re(S22) Im(S22)
in the file) are assigned to the test ports that the analyzer actually calibrates as follows: Port 1 is
always assigned to the lower-numbered calibrated test port, port 2 to the other (higher-
numbered) calibrated test port.
Assigning a label to standards is optional. However, the label is displayed in many dialogs and
can provide useful information about the standard, e.g. its serial number.
If Circuit Model is selected in the S-params From panel, then the controls in the central panel of the
dialog are enabled. The circuit diagram is adjusted to the selected standard type. The following
parameters can be set:
•
Frequency range (Min. Freq. to Max. Freq) for which the circuit model is valid. During
calibration, the analyzer checks whether the sweep range is contained in the validity range of
all measured standards and possibly generates a warning (see
Measure Standards dialog).
•
Offset and Load parameters of the circuit model.
The impedance for waveguides is frequency-dependent. If a waveguide line type is selected in
the Offset Model dialog, the circuit model indicates varies instead of a definite impedance value.
Remote control: [SENSe<Ch>:]CORRection:CKIT:<std_type>
[SENSe<Ch>:]CORRection:CKIT:<conn_type>:<std_type>
MMEMory:LOAD:CKIT:SDATa
Restrict Port Assignment
Opens a dialog to define whether the standard can be connected to any port of the analyzer or to just
one port (for one-port standards) or a pair of ports (for two-port standards).
The port assignment is displayed in the Add or View / Modify Calibration Kit dialogs.