Rohde & Schwarz 1145.1010.04/05/06, Operating Manual

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Calibration Overview R&S
®
ZVA/ZVB/ZVT
1145.1084.12 3.42 E-1
Automatic Calibration
A Calibration Unit is an integrated solution for automatic system error calibration of vector network
analyzers of the R&S ZVAB family. Rohde & Schwarz provides different types of calibration units:
•
The 4-port calibration units (accessory R&S ZV-Z51, order numbers 1164.0515.30 or
1164.0515.70 for models equipped with 3.5 mm or type N sockets, respectively) are especially
suited for R&S ZVB and R&S ZVA vector network analyzers.
•
The 8-port calibration unit (accessory R&S ZV-Z58, order number 1164.0638.78) are especially
suited for R&S ZVT vector network analyzers.
The units contain calibration standards that are electronically switched when a calibration is performed.
The calibration kit data for the internal standards are also stored in the calibration unit, so that the
analyzer can calculate the error terms and apply the calibration without any further input.
Advantages of automatic calibration
Automatic calibration is generally faster and more secure than manual calibration, because:
•
There is no need to connect several standards manually. The number of standards to be
connected quickly increases with the number of ports; see TOSM Calibration.
•
Invalid calibrations due to operator errors (e.g. wrong standards or improper connections) are
almost excluded.
•
No need to handle calibration kit data.
•
The internal standards don't wear out because they are switched electronically.