R&S QAR Series, Руководство пользователя

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Operating the R&S QAR
R&S
®
QAR
48 User Manual 1178.7200.02 ─ 04
Ctrl-Q Closes the software.
F5 Initiates a measurement.
5.2.3 Measurements
For bumper measurements, the R&S QAR provides a reflection measurement. Bumper
measurements require the optional reference reflector. The measurement usually con-
sist of two steps, normalization and the actual measurement.
Measuring a DUT
1. Set up the normalization.
2. Start the normalization with "Normalize".
For details on how to normalize the measurement, see Chapter 5.2.3.1, "Normali-
zation" , on page 48.
3. Place the DUT between the R&S QAR and the reference reflector.
4. Start the reflection measurement with "Measure" (or the F5 key).
The measurement itself lasts less than a second. The results are displayed after a
few seconds.
For details on how to run the measurement, see
Chapter 5.2.3.2, "Attenuation
Measurement" , on page 49.
● Normalization .......................................................................................................... 48
● Attenuation Measurement .......................................................................................49
5.2.3.1 Normalization
Normalization is a measurement done in the free space, to obtain a reference value for
the bumper measurements. You do not need any object to measure or additional ele-
ment.
Normalization enables you also to check the positioning and the status of the reference
reflector. If the position is wrong, or the reflector is damaged, you get a warning.
Perform the following steps:
1. Make sure that nothing is obstructing the view between R&S QAR and the refer-
ence reflector.
2. Choose the configuration needed from the "bumper type" drop-down menu.
3. Click the "Normalize" button to start the measurement.
The R&S QAR measures the deviations and saves the correction data. All subse-
quent measurements are corrected accordingly.
4. Optional: scan the free space by clicking the "Measure" button to verify the normali-
zation.
Bumper Measurements