R&S ZVB - Automatic Calibration

R&S
®
ZVA / R&S
®
ZVB / R&S
®
ZVT System Overview
Calibration Overview
Operating Manual 1145.1084.12 – 30 59
TNA) after (n – 1) Through measurements, provided that the Throughs connect all analyzer ports. To
establish a sufficient set of Through connections, you can select an arbitrary analyzer port as a node port
and measure all Through connections to this port. You can also connect all ports in increasing order, e.g.
1 --> 2, 2--> 3, 3--> 4 ...
The general condition for the Through connections is that every port is connected at least once, and that
the connections form no cycles (the connections correspond to a "tree" in graph theory).
The number of connected standards for this simplified TOSM / UOSM calibration is reduced to:
Full n-port calibration with (n – 1) Through connections is automatically active for all full n-port calibration
types. As soon as a sufficient set of Through connections have been measured in the Measure Standards
dialog, you can Apply the calibration.
You can also measure additional Through connections in order to improve the accuracy. Any number of
through connections between the minimum number (n – 1) and the complete full n-port model (n!/(2*(n –
2)!)) is allowed.
Full n-Port calibration with a reduced number of Through connections also allows you to calibrate an
n-port analyzer with an m-port calibration unit, where m < n. See Using Multiple Port Assignments.
Automatic Calibration
A Calibration Unit is an integrated solution for automatic system error correction of vector network
analyzers. For analyzers of the R&S ZVAB family, Rohde & Schwarz provides different types of calibration
units:
 The 2- and 4-port calibration units R&S ZV-Z51, R&S ZV-Z52, R&S ZV-Z53, R&S ZV-Z54, and
R&S ZVA-Z55 are especially suited for R&S ZVB and R&S ZVA vector network analyzers.
 Within their respective frequency ranges, you may also use one of the calibration units R&S ZN-
Z51 (2 or 4 ports) or R&S ZN-Z151 (2 ports)