Rohde & Schwarz ZNB20, Руководство пользователя

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GUI Reference
R&S
®
ZNB/ZNBT
326 User Manual 1173.9163.02 ─ 38
Related information
Refer to the following sections:
●
Chapter 4.5.2.4, "Cal Kit Files" , on page 156
●
"Kit Standards Dialog" on page 323
●
Chapter 4.5.2.1, "Calibration Standard Types" , on page 152
Access: Kit Standards Dialog > "View / Modify..."
The diagram in the "View / Modify Cal Kit Standards" dialog depends on the standard
type for which the dialog was opened. Moreover, it is possible to modify the circuit
model using the buttons in the upper right of the dialog.
Offset Parameters
The entries in the upper part of the "View / Modify Cal Kit Standards" dialog specify the
offset parameters for the transmission lines of the selected calibration standard.
The offset parameters depend on whether or not the circuit model is defined as "Agi-
lent Model" (see
Chapter 5.4.2.1, "Cal Connector Types Dialog" , on page 319):
●
In an "Agilent Model" a calibration standard is characterized by its "Delay" (in s), its
characteristic impedance "Z0" (in Ω) and its "Offset Loss" (in GΩ/s).
●
Otherwise the standard is characterized by the R&S ZVR-compatible parameters
"Electrical Length" (in m), "Char. Imp." (in Ω) and "Loss" (in dB/sqrt(GHz)). The loss
is zero and not editable as long as the electrical length is zero.
Both parameter sets are closely related. The "Electrical Length" is proportional to the
"Delay" ; "Z0" corresponds to the "Char. Imp.". Moreover the analyzer converts an Agi-
lent-type "Offset Loss" into a R&S
ZVR-type "Loss" and vice versa using the "Rel. Per-
mittivity εr" for the selected connector type.
See also description of the offset parameters in Chapter 4.5.2.1, "Calibration Standard
Types" , on page 152.
Cal Softtool