Reading/Writing Measurement Data

This section describes how to process the E5052B’s internal data. You can use amongst the following internal data arrays: unformatted data arrays, unformatted memory arrays, formatted data arrays, formatted memory arrays, and X-axis data arrays. For more information on the internal data arrays, see Internal Data Processing.

To read/write a formatted data array, formatted memory array, unformatted data array, or unformatted memory array, use the following objects:

•   SCPI.CALCulate.xx.TRACe.DATA.FDATa

•   SCPI.CALCulate.xx.TRACe.DATA.FMEMory

•   SCPI.CALCulate.xx.TRACe.DATA.UDATa

•   SCPI.CALCulate.xx.TRACe.DATA.UMEMory

There are unformatted data array and memory array where the AM noise measurement, the baseband noise measurement, phase noise measurement and segment phase noise measurement are contained with the unit of dBc.

•   SCPI.CALCulate.AM(1-1).TRACe(1-1).DATA.PDATa

•   SCPI.CALCulate.AM(1-1).TRACe(1-1).DATA.PMEMory

•   SCPI.CALCulate.BB(1-1).TRACe(1-1).DATA.PDATa

•   SCPI.CALCulate.BB(1-1).TRACe(1-1).DATA.PMEMory

•   SCPI.CALCulate.PN(1-1).TRACe(1-1).DATA.PDATa

•   SCPI.CALCulate.PN(1-1).TRACe(1-1).DATA.PMEMory

•   SCPI.CALCulate.PS(1-1).TRACe(1-1).DATA.PDATa

•   SCPI.CALCulate.PS(1-1).TRACe(1-1).DATA.PMEMory

 

To read an X-axis data array, use the following object:

•   SCPI.CALCulate.xx.DATA.XDATa

For the transient measurement, you can use two types of object as follows:

•   SCPI.CALCulate.TR(1-1).NARRow(1-2).DATA.XDATa

•   SCPI.CALCulate.TR(1-1).WIDE.DATA.XDATa

 

To read a raw data array, use the following object:

•   SCPI.CALClate.xx.DATA.RDATa

For the transient measurement, you can use two types of object as follows:

•   SCPI.CALCulate.TR(1-1).NARRow(1-2).DATA.RDATa

•   SCPI.CALCulate.TR(1-1).WIDE.DATA.RDATa

There is a raw array where the AM noise measurement, the baseband noise measurement, phase noise measurement and segment phase noise measurement are contained with the unit of dBc.

•   SCPI.CALCulate.AM(1-1).DATA.PDATa

•   SCPI.CALCulate.BB(1-1).DATA.PDATa

•   SCPI.CALCulate.PN(1-1).DATA.PDATa

•   SCPI.CALCulate.PS(1-1).DATA.PDATa

The E5052B VBA allows you to deal with multiple pieces of data through variables of the Double-precision Dynamic Array type. For example, a formatted data array that includes five measurement points is stored as shown in the figure below. For more information on contained data, see the section on “Reading/Writing Measurement Data”.

Example of storing data into a Variant variable