Improving Level Performance
R&S
®
SMA100B
149
User Manual 1178.3834.02 ─ 03
The file contains a list of correction values, one row per frequency and level pair; a new
line indicator separates the correction values.
For file handling, use the standard functions in the "File Manager", see
Collecting correction data
To fill the frequency and power values in the correction table, use one of the following
options:
●
Manually
, row by row.
●
Fill the table
automatically
with linearly interpolated values, calculated based on
value range and step size.
●
Acquire the real frequency response characteristics of the used component
by
R&S NRP power sensor
.
Using power sensor for collecting correction data
Consider the following when using R&S NRP power sensors to collect correction val-
ues:
●
Correction values can be acquired at any time, irrespective of the modulation set-
tings of the generator.
●
Measure the level directly at the input of the DUT.
●
Use the internal correction functions of an R&S NRP power sensor to increase the
accuracy and optimize the RF level.
●
Use S-Parameter to consider the impact of any two-port device like an adapter
between the signal generator and the sensor input.
Interactions and characteristics
Active "User Correction" is effective in all operating modes.
The RF output level (Level
RF
) is the sum of the level value and the correction for the
particular frequency:
Level
RF
= "Status bar > Level" + "UCOR"
You recognize that user correction is enabled by the status indication "Lev Ucor" in the
"Level" panel.
6.3.1 User Correction Settings
Access:
1. Select "Level" > "User Correction".
2. Select "User Cor. Data > navigate to the file *.ucor > Select".
3. Select "RF Level > RF State > On".
User Correction
