Signal Generator Settings
R&S
®
SGT100A
189
User Manual 1176.8674.02 ─ 07
"Polynomial"
By a polynomial with configurable order and coefficients.
Select "AM/AM or AM/PM Polynomial Coefficients" to access the set-
tings, see
Chapter 7.6.3.4, "Polynomial Coefficients Settings"
"Normalized"
As a normalized data.
Select "Normalized Data" to access the settings, see
Remote command:
[:SOURce<hw>]:IQ:DPD:SHAPing:MODE
Interpolation
Enabled in "Shaping > From Table/Normalized".
A predistortion function defined in a table contains a limited number of value pairs. This
parameter enables a linear interpolation between the defined values to prevent abrupt
changes.
Table 7-13: Effect of parameter "Interpolation"
"Interpolation > Off"
"Interpolation > Linear (Power)"
Remote command:
[:SOURce<hw>]:IQ:DPD:SHAPing:TABLe:INTerp
Invert correction values
Inverts the defined correction values.
Use this function to apply the exact invert predistortion coefficients without to change
the defined predistortion table.
This function is also useful to toggle between predistortions with corrections related to
the input power and to the output power.
Applying Digital Predistortion