R&S SGT100A, Руководство пользователя

Страница: 214 / 593

Signal Generator Settings
R&S
®
SGT100A
183 User Manual 1176.8674.02 ─ 07
See also "File format of the correction table file" on page 182.
●
Internally
Use the built-in editor table editor, see Chapter 7.6.3.3, "Edit Predistortion Table
Settings" , on page 191.
File format of the normalized data
The normalized data files are files with predefined extension
*.dpd_norm
and simple
file format, see "File format of the normalized data" on page 183.
The file contains an optional header
# Rohde & Schwarz - Digital
Predistortion Normalized Table Data # PinMax [dBm] # number of
points # Vin/Vmax, deltaV/V, deltaPhase [deg]
, the values of the Pin
max
,
the number of the subsequent points and a list of comma-separated groups of three
values.
Example: Normalized data file content
# Rohde & Schwarz - Digital Predistortion Normalized Table Data
# PinMax [dBm]
# number of points
# Vin/Vmax, deltaV/V, deltaPhase [deg]
10
4096
0,0,0
0.0002442,-0.00018246,0.28052
0.0004884,-0.00036487,0.28041
0.0007326,-0.00054723,0.2803
0.0009768,-0.00072954,0.28019
0.001221,-0.00091181,0.28008
0.0014652,-0.001094,0.27996
...
Predistortion Function in Raw Data Format
The predistortion values are defined directly, with a single remote control command:
●
Define the up to 4000 comma-separated value pairs, describing the absolute input
power P
in
and the delta values for amplitude or phase (
Δ
Power and
Δ
Phase).
Example:
SOURce1:IQ:DPD:SHAPing:TABLe:AMAM:FILE:DATA -30.4,-5.2,
-25.1,-4.5, -18.5,-2.5, -10.5,-1
See:
–
[:SOURce<hw>]:IQ:DPD:SHAPing:TABLe:AMAM:FILE:DATA
on page 455
–
[:SOURce<hw>]:IQ:DPD:SHAPing:TABLe:AMPM:FILE:DATA
on page 455
–
[:SOURce<hw>]:IQ:DPD:SHAPing:TABLe:AMAM:FILE:NEW
on page 455
–
[:SOURce<hw>]:IQ:DPD:SHAPing:TABLe:AMPM:FILE:NEW
on page 455
Applying Digital Predistortion