FPT Test Nov 2022

    System schematics

    FPT_TEST_PV.png

    Setup 86 GHz

    Target band: 86.000 - 87.024

    1st LO:     93.0 GHz

    RF: LSB 5-9 GHz

    2nd LO (DBBC3): 9.048 GHz

    Sky freq:    83.952 - 88.048 GHz

     

    sky 83952 85976 86000 87024
    after 1st DC 9048 8024 7000 5976
    after 2nd DC 0 1024 2048 3072

    => DBBC3 should use filter1= 2000-3000

    Setup 230 GHz

    Target band: 215.000 - 216.024

    1st LO:     221.010 GHz

    RF: LSB 5-9 GHz

    2nd LO (DBBC3): 8.058 GHz

    Sky freq:    211.962 - 216.058 GHz
     

    sky 212952 213976 215000 216024
    after 1st DC 8058 7034 6010 4986
    after 2nd DC 0 1024 2048 3072

    => DBBC3 should use filter1 = 2000-3000

     

    DBBC3 setup

    • load normally the OCT_120 firmware
    • run dbbc3ctl.py and do check system all
    • run /home/oper/rottmann/dbbc3/utilities/setupFPT_Nov22.py dbbc3  (sets the 1GHz filters and the LO freqs)

    Modules & Recorders

    recorder2

    slot 1: EHT%0017

    slot 2: EHT%0018

    recorder3

    slot 1: EHT%0019

    slot 2: EHT%0020

     

    module setup (do on both recorders)

    group=new:12
    input_stream=add:stream1:vdif:8224:50:42:eth3:::1
    input_stream=add:stream2:vdif:8224:50:42:eth5:::2
    input_stream=commit
    group=open:12
    

    Line injection test (Nov 10th)

    230 GHz signal chain

    Line freq: 5810 MHz (corresponds to 215.2 GHz sky)

    connected to boards A and B (corresponding to IF2 and IF4)

    Line is expected to appear at 2248 MHz in base band and at 200 MHz in the filtered band

    230.png

    86 GHz signal chain

    Line freq 6800 MHz (corresponds to 86.2 GHz sky)

    connected to boards C and D (corresponding to IF1 and IF3)

    Line is expected to appear at 2248 MHz in base band and at 200 MHz in the filtered band

    86.png

    Action

    • Change GMVA modules to recorder1 (SS)
    • Insert new modules to recorders 2 & 3 (SS)
    • update google sheet  (SS)
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     230.png
    No description
    36.32 kB16:30, 10 Nov 2022rottmannActions
     86.png
    No description
    32.08 kB16:30, 10 Nov 2022rottmannActions
     FPT_214.5_lsb_horiz_pnoise.JPG
    Integrated Phase noise of injected tone. Eq.to 60 deg pk-pk
    197.03 kB20:50, 22 Nov 2022ssanchezActions
     FPT_214.5_lsb_vert_pnoise.JPG
    Integrated Phase noise of injected tone. Eq.to 54 deg pk-pk
    198.32 kB20:50, 22 Nov 2022ssanchezActions
     FPT_86.5_lsb_vert_pnoise.JPG
    Integrated Phase noise of injected tone. Eq. to 23 deg pk-pk
    199.17 kB20:50, 22 Nov 2022ssanchezActions
     FPT_TEST_PV.png
    No description
    49.36 kB17:34, 8 Nov 2022rottmannActions
     FTP_86.5_lsb_horiz_pnoise.JPG
    Integrated Phase noise of injected tone. Eq. to 23.5 deg pk-pk
    199.53 kB20:50, 22 Nov 2022ssanchezActions
     Maser_Drift_IRAM_FPT_testNov_2022.pdf
    No description
    424.07 kB09:55, 2 Jun 2023ptorneActions