Operating the R&S
QAR
R&S
®
QAR
49
User Manual 1178.7200.02 ─ 04
The expected result is an attenuation around 0 dB. For a range of acceptable
results, see the datasheet.
If the results do not meet the expectations, repeat the normalization.
If the second normalization still yields unexpected results, perform the verification,
as described in
5.2.3.2
Attenuation Measurement
1. Set a threshold, if needed, by choosing "Options" > "Threshold".
2. Click the "measure" button. Or press F5.
Do not move the bumper during the measurement.
The measurement takes a few seconds, then the results appear on the GUI. See
"Numeric results and indicator"
If you change the position of the reference reflector, or set a different configuration to
use in the "bumper type" drop-down list, perform a new normalization before measur-
ing.
5.2.4
Configuration
The R&S
QAR provides several tools to configure the radome measurements.
Managing measurement results
You can export the measurement data, for example to store it on an external memory
device or copy it to a different computer for further analysis with different software. You
can also restore data that you have taken at some point and review them in the soft-
ware.
1. Select "Options" > "Recording".
2. Define the default directory in which to save the results in the "Result Folder" input
field.
For each measurement, the R&S
QAR creates a folder that contains the measure-
ment data.
3. Select "Autosave" to use the auto save functionality..
When you are using the autosave feature, the R&S
QAR automatically stores the
results after each measurement.
Tip:
You can always save the measurement results deliberately with the keyboard
shortcut Ctrl-S or from the "File" menu.
4. Select the data you want to save from the "Results To Save" dropdown menu.
A measurement dataset contains the following files.
●
<yyyymmdd-hhmmss>_cfg.txt
Bumper Measurements
