Test setup
R&S
®
QAR50
30
User Manual 1179.4992.02 ─ 02
6
Test setup
The test setup for measurements with the R&S
QAR50 basically consists of a
R&S
QAR50 and a DUT located between the two clusters. The position of the DUT rel-
ative to the clusters is determined by a coordinate system, whose origin is the center of
cluster 1.
●
On the x- and y-axis, we recommend that the center of the DUT corresponds to the
origin of the axes (x and y = 0). Otherwise, results can be invalid.
●
On the z-axis, the DUT must have the same distance to both cluster. The distance
between the clusters is 1
m.
Figure 6-1: Location of the DUT relative to the clusters
Two factors determine the test setup:
●
The polarization of the clusters.
●
The position of the R&S
QAR50 (lying or upright).
is the same for all test setups.
Cluster polarization
The R&S
QAR50 is available in two variants. One variant that has vertically polarized
clusters (order no. 1343.0099K02) and one variant that has horizontally polarized clus-
ters (order no. 1343.0099K03). The variant you need depends on the DUT that you are
measuring: radomes for radar sensors with vertical or horizontal polarization.
Instrument position
You can set up the R&S
QAR50 in two positions: lying and upright (for details, see
Chapter 4.3, "Installing the R&S
on page 14). The position of the
R&S
QAR50 determines the recommended DUT position.
Of course, you can position the DUT any way you want, regardless of the R&S
QAR50
position. However, doing so can result in a
orientation.
