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hardware:dbbc.calibration [2011/10/26 06:37] 127.0.0.1 external edit |
hardware:dbbc.calibration [2013/10/02 03:56] (current) Jim Lovell |
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====== DBBC Calibration ====== | ====== DBBC Calibration ====== | ||
* Apply a tone of 764 MHz at -15 dBm to one input 1 of all four CoMos | * Apply a tone of 764 MHz at -15 dBm to one input 1 of all four CoMos | ||
- | * Set dbbc_config_file.txt to be dbbc_control_file_calibration.txt | + | * Use dbbc_config_file_104_calibration.txt |
- | * Start DBBC Control.exe | + | * Set dbbcifa/b/c/d=3,agc,1 (i.e. input 3, filter 1) |
- | * Set dbbcifa/b/c/d=1,agc,1 (i.e. input 1, filter 1) | + | * Once gains have stabilised, turn off the agc loop with dbbc=dbbcgain=all,man |
* Run "calibration" in DBBC Control | * Run "calibration" in DBBC Control | ||
+ | * dbbc=dbbcgain=all,agc | ||
* The results are written to C:\ as yyyy-ddddThhmmss-calib.txt | * The results are written to C:\ as yyyy-ddddThhmmss-calib.txt | ||
+ | * The file has 5 columns: phase, CoMo A/B/C/D value. Pick the phase at the null past the first peak. | ||