User`s guide

Chapter 7 109
Reading/Writing Measurement Data
Internal data processing
7. Reading/Writing Measurement Data
associated with one of the 4 traces contained in one of the 4 channels 4×4 = 16). To
read/write one of the corrected data arrays, use the following command:
• :CALC{1-4}:DATA:SMEM on page 218
Formatted data array
A formatted data array contains the formatted data (values to be displayed) obtained by
performing data math operations, measurement parameter conversion, and smoothing on a
particular corrected data array. Regardless of the data format, it contains two data elements
per measurement point as shown in the following table:
The instrument retains 16 formatted data arrays at maximum, each of which is associated
with one of the 4 traces contained in one of the 4 channels 4×4 = 16). To read/write one of
the formatted data arrays, use the following command:
• :CALC{1-4}:DATA:FDAT on page 215
Table 7-1 Data elements and data formats
Data format
*1
Data element
(primary value)
Data element
(secondary value)
log magnitude log magnitude Always 0
Phase Phase Always 0
Group delay Group delay Always 0
Smith chart (Lin) Liner magnitude Phase
Smith chart (Log) log magnitude Phase
Smith chart (Re/Im) Real part of a complex
number
Imaginary part of a
complex number
Smith chart (R+jX) Resistance Reactance
Smith chart (G+jB) Conductance Susceptance
Polar (Lin) Liner magnitude Phase
Polar (Log) log magnitude Phase
Polar (Re/Im) Real part of a complex
number
Imaginary part of a
complex number
Liner magnitude Liner magnitude Always 0
SWR SWR Always 0
Real number Real part of a complex
number
Always 0
Imaginary number Imaginary part of a
complex number
Always 0
Expanded phase Expanded phase Always 0
Positive phase Positive phase Always 0
*1.To set this, use the :CALC{1-4}:FORM command on page 219 command.