Customer Service Center
Home
Knowledge Base
Contact Support
License Activation
|
Contact Support
|
License Activation
|
Spirent KB Article
Doc ID: FAQ13988
Printer Friendly
Email Article Link
Positioning Application: Why does the Power Levels Graph dropdown selection for frequency not change the Power Adjustment display reference level value?
Environment/Versions
PosApp (SimGEN)
Scenario that includes two or more carrier frequencies for the same constellation type
Answer
The Power Levels Graph displays a dropdown list selection when there are two or more selected signal types with a different centre frequency
Changing the dropdown selection updates the Power Levels Graph display for the chosen signal type
The power bars represent the selected signal type(s)
When the different signal types are from the SAME constellation the power reference level also changes if appropriate
For example, GPS L1 and GPS L2, will show -130 for L1 and -136 for L2
When the different signal types are from DIFFERENT constellations the power reference level simply states "Ref"
Click on one of the power bars to see the true power reference level
The Power Adjustment display, which provides power sliders for manual, interactive power level control, always shows just one power reference level
What it shows is completely independent of the dropdown selection on the Power Levels Graph
It will always show the 'Primary' signal type reference level for any constellation
When choosing the Antenna signal types the 'primary' signal is the left most selection that has been made for each constellation type
For example, if you choose GPS L1+L2, the GPS L1 reference is displayed. But if you choose GPS L2+L5 the GPS L2 reference is displayed
More information about these controls is available in the SimGEN user manual,
DGP00686AAA
Version
2.0
Publish Date
2014-07-29
Categories
Product : SimGEN,PosApp,Carrier Frequency
Related Articles