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# gr-usrptest OOT-Module
## Usage
This OOT is used to run GNU Radio based tests on various USRPs and daughterboards catch regressions.
## Structure
gr-usrptest follows the structure of a regular OOT-Module with some additions.
The python directory contains a couple additional submodules.
- flowgraphs
- Contains dynamically configured GNU Radio flowgraphs.
- rts_tests
- Contains tests which can be run unsupervised and store results
- labview_control
- Contains classes and functions to control a remote LabVIEW instance with python_labview_automation
## Applications
- usrp_phasealignment.py
- calculates phase differences between an arbitrary number of USRP devices. Runs phase difference measurement a speficied number of times and retunes the USRP daugtherboards to a random frequency between measurements. Prints average phase difference and standard deviation for every measurement in human readable format.
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