Operating the R&S
QAR
R&S
®
QAR
77
User Manual 1178.7200.02 ─ 09
3. Optional: If you change any settings that have an effect on the car type configura-
tion (for example limits), select "File" > "Configuration" > "Export Configuration" to
export the updated configuration.
Defining alarm limits
Alarm limits define by how much the position of the radar module may deviate from the
ideal position. If the results show a deviation greater than the limits, the test fails.
1. Select "Options" > "Alarm Limits" to open the corresponding dialog box.
Figure 5-23: Set alarm limits dialog box
2. Define the limits as necessary.
● Angle limits
Maximal difference between theoretical and measured rotation angles. If the
measured difference is higher than the maximum limit, it means that the radar
is too turned around an axis and you get a "Not OK" status (red traffic light).
● Distance limit
Minimum distance from the radar window border. If the measured distance is
lower than the minimum limit, it means that the radar beam is too close to the
border and you get a "Not OK" status (red traffic light).
● Difference limit for the verification set
Only applicable when using the verification sets. Maximal difference between
theoretical and measured position. If the measured difference is higher than the
maximum limit, you get a "Not OK" status (red traffic light).
If verification fails, check the position of all devices (R&S
QAR, verification kit
and verification plate). Also check if you have selected the correct verification
plate from the "Car Type" dropdown menu.
If verification still fails, contact Rohde
&
Schwarz. Stop any further measure-
ments.
Radar Positioning Measurements