Calibration data in the PNA is stored in Cal Sets. Learn more about Cal Sets
You can read or write two types of Calibration data:
Error Terms - calculated data using standard measurement data and the algorithms for the specified cal type.
Standard Measurement data -raw data resulting from the measurement of a calibration standard.
Each of these data are available in the PNA in either variant data or typed data. Learn more about variant and typed data
Other Topics about COM Concepts
There are several interfaces associated with Calibration.
This interface is the original interface provided with the first version of the PNA. It provides remote access to the "Unguided" Calibration wizard. This interface can perform 1 and 2 port calibrations as well as response cals.
This interface can also read and write error terms from/to a Cal Set. However, ICalibrator is NOT recommended for this purpose. The ICalSet2 Interface is better suited for reading and writing error terms.
See a vbscript example of how to perform a 2-port Cal and read the cal data.
This interface provides the methods and properties used by the Guided Calibration wizard. With this interface you can perform multi-port calibrations (1 to 4 port cals), but no response cals.
These interfaces provide access to the Cal Set contents. You can read and write error terms with both of these interfaces.
ICalSet2 uses Variant data, which means it is usable from vbscript.
ICalData3 uses "typed" data, which means it can be used from any automation engine that can read the type library (VEE, VB, C++, etc.). Typed arguments (such as float or single) are more efficient than variants, so use the ICalData3 interface where better performance is needed.
See a vbscript example of how to read Cal Set data.
This interface provides access to the stimulus attributes of the Cal data: frequency, power, number of points. These are the stimulus conditions under which the Cal Set was created.