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hardware:phasecal
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hardware:phasecal [2019/05/22 06:21] Guifre |
hardware:phasecal [2019/11/26 00:29] (current) Guifre [Data recorded in Flexbuff Hb] |
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| - | ====== Data recorded in Flexbuff Hb ====== | ||
| - | mkdir /mnt/vbsPcal/ \\ | + | ====== Data processing ====== |
| - | vbs_fs -n 4 -I *pcal_*2205 /mnt/vbsPcal/ \\ | + | |
| - | ls -l /mnt/vbsPcal/ \\ | + | |
| - | -rw-r--r-- 0 observer observer 15G May 22 16:13 pcal_off_2205_Hb_No0001_46227 \\ | + | First need to change PythonPath every-time you open a new terminal, otherwise is using DifX defaults one: |
| - | -rw-r--r-- 0 observer observer 15G May 22 16:13 pcal_off_2205_Hb_No0001_46228 \\ | + | |
| - | -rw-r--r-- 0 observer observer 15G May 22 16:13 pcal_off_2205_Hb_No0001_46229 \\ | + | |
| - | -rw-r--r-- 0 observer observer 15G May 22 16:13 pcal_off_2205_Hb_No0001_46230 \\ | + | |
| - | -rw-r--r-- 0 observer observer 15G May 22 16:13 pcal_off_2205_Hb_No0001_46233 \\ | + | |
| - | -rw-r--r-- 0 observer observer 15G May 22 16:13 pcal_off_2205_Hb_No0001_46234 \\ | + | |
| - | -rw-r--r-- 0 observer observer 137G May 22 16:10 pcal_on_2205_Hb_No0001_46227 \\ | + | |
| - | -rw-r--r-- 0 observer observer 137G May 22 16:10 pcal_on_2205_Hb_No0001_46228 \\ | + | |
| - | -rw-r--r-- 0 observer observer 137G May 22 16:10 pcal_on_2205_Hb_No0001_46229 \\ | + | |
| - | -rw-r--r-- 0 observer observer 137G May 22 16:10 pcal_on_2205_Hb_No0001_46230 \\ | + | |
| - | -rw-r--r-- 0 observer observer 137G May 22 16:10 pcal_on_2205_Hb_No0001_46233 \\ | + | |
| - | -rw-r--r-- 0 observer observer 137G May 22 16:10 pcal_on_2205_Hb_No0001_46234 \\ | + | |
| - | ====== Data processing ====== | + | export PYTHONPATH=/usr/lib/python3.4 |
| + | cd /home/observer/PcalTests | ||
| + | |||
| + | I recommend using the program call screen in order to have the processing in the background. A short description on how to use screen is below: | ||
| + | |||
| + | observer@flexbuffhb DiFX-2.5.2 ~> screen YourName - You can recognise the screen later | ||
| + | observer@flexbuffhb DiFX-2.5.2 ~> screen -raAD | ||
| + | |||
| + | There are several suitable screens on: | ||
| + | 14835.pts-4.flexbuffhb (28/05/19 17:39:31) (Detached) | ||
| + | 18325.pts-4.flexbuffhb (14/05/19 13:53:38) (Detached) | ||
| + | Type "screen [-d] -r [pid.]tty.host" to resume one of them. | ||
| + | observer@flexbuffhb DiFX-2.5.2 ~> screen -raAD 18325 - Check if that is the screen you were using last!! | ||
| + | |||
| + | Commands to use inside a screen: | ||
| + | ctrl+a c - creates | ||
| + | ctrl+a p - previous | ||
| + | ctrl+a n - next | ||
| + | ctrl+a d - leaves the current screen | ||
| + | |||
| + | You should find most of the necessary files inside of the folder \\ | ||
| + | |||
| + | The processing takes 3 steps: \\ | ||
| + | 1- Running the software spectrometer to see the spectrum of the signal recorded (swspec) \\ | ||
| + | 2- Making a first estimate of the pcal measurements (calculatePcalCpp) \\ | ||
| + | 3- Running the tracking software (sctracker). \\ | ||
| + | |||
| + | 1. Take the inifile.ini that is in the directory and prepare it for the scan you want to process. There are basically 2 settings you can modify: \\ | ||
| + | Channel from 1 to 8. I did the recording with 8 channels \\ | ||
| + | |||
| + | IF from A to F. We recorded the data from the 6 boards in the dbbc3. So for a total of 6x8 channels = 48. \\ | ||
| + | |||
| + | <WRAP center round important 60%> | ||
| + | UseFile1Channel = 1 \\ | ||
| + | BaseFilename1 = p190522_Hb_VDIF_If000A_%fftpoints%pt_%integrtime%s_ch%channel%\\ | ||
| + | Notes: \\ | ||
| + | # Change then channel value from 1 to 8, one per channel \\ | ||
| + | # Change IF000A to A/B/C/D/E/F to cover all boards \\ | ||
| + | </WRAP> | ||
| + | |||
| + | We run the program by executing this program. If we process the 8 channels per each of the 6 files (6 IFs), You should end up with 48 spectra data files. \\ | ||
| + | |||
| + | swspectrometer inifile.ini /mnt/vbsPcal/pcal_on_2205_Hb_No0001_46227 | ||
| + | |||
| + | 2. Check the quality of the spectrum. I have written several Python scripts to provide a quick validation of the recorded data. \\ | ||
| + | |||
| + | <WRAP center round important 60%> | ||
| + | // -bw sets the bandwidth \\ | ||
| + | // -f0 sets the minimum frequency to search for the peak \\ | ||
| + | // -f1 sets the maximum frequency to search for the peak \\ | ||
| + | // -p plots the output - don't put anything if you don't need \\ | ||
| + | </WRAP> | ||
| + | |||
| + | python3 checkSpectra.py p190522_Hb_VDIF_If000A_320000pt_5s_ch1_swspec.bin -bw 32e6 -f0 4e6 -f1 6e6 -p | ||
| + | python3 calculatePcalCpp.py p190522_Hb_VDIF_If000A_320000pt_5s_ch1_swspec.bin -bw 32e6 -f0 4.9e6 -f1 5.1e6 | ||
| + | |||
| + | |||
| + | The calculatePcalCpp will provide a set of polynomials that will be used for the tracking software to study the Phase Cal tone. Example: \\ | ||
| + | |||
| + | -rw-r--r-- 1 observer observer 75 May 23 12:07 p190522_Hb_VDIF_If000A_320000pt_5s_ch1.poly2.txt | ||
| + | -rw-r--r-- 1 observer observer 50 May 23 12:07 p190522_Hb_VDIF_If000A_320000pt_5s_ch1.X1cfs.txt | ||
| + | -rw-r--r-- 1 observer observer 34558 May 24 13:23 Fdets.cal2019.05.22.Hb.ifA.ch1.r0i.txt | ||
| + | |||
| + | 3. Configure and run sctracker \\ | ||
| + | |||
| + | Edit inifileHb and modify the following fields \\ | ||
| + | # Input file . InputSource = /mnt/vbsPcal/pcal_on_2205_Hb_No0001_46227 \\ | ||
| + | # Here you select channel 1 to 8 UseChannel = 1 \\ | ||
| + | # Select Cpp text file . PhasePolyCpmFile = p190522_Hb_VDIF_If000A_320000pt_5s_ch1.poly2.txt \\ | ||
| + | # Select Cpp text file . PhasePolyCppFile = p190522_Hb_VDIF_If000A_320000pt_5s_ch1.poly2.txt \\ | ||
| + | # Output file name . . BaseFilename = p190519_Hb_VDIF_If000A_%fftpoints%pt_%integrtime%s_ch%channel% \\ | ||
| + | |||
| + | Run the sctracker as: | ||
| + | sctracker inifileHb | ||
| + | |||
| + | Once sctracker has finished, which can take several hours, it produces several output files. The most important one is \\ | ||
| + | p190519_Hb_VDIF_If000A_3200000pt_5s_ch1_tone0.bin \\ | ||
| + | |||
| + | Once it has finished please remove the scscec.bin because it is very large and we better save some storage space. \\ | ||
| + | rm p190519_Hb_VDIF_If000A_3200000pt_5s_ch1_scspec.bin \\ | ||
| + | |||
| + | Next step will be to run tone file into the PLL script. | ||
| + | ===== WHAT TO DO?? ===== | ||
| + | 1. Process all 6 scans (3 IFs x 2 pols) and extract the spectra for each channel. We will have 48 spectra at the end.\\ | ||
| + | 2. Calculate the Polynomials for one of the phase cal at the beginning of the band, the tone at f=5 MHz.\\ | ||
| + | 3. Run sctracker (48 times) for each spectra. \\ | ||
| + | 4. To decide if we want to repeat with another cal tone at the end of the frequency band, f=25 MHz (?) | ||
/home/www/auscope/opswiki/data/attic/hardware/phasecal.1558506069.txt.gz · Last modified: 2019/05/22 06:21 by Guifre
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