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FPT Test Oct 2024

Modified 15:43, 23 Sep 2024 by rottmann | Page History

    Version as of 19:25, 21 Nov 2024

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    Overview

    Dual-frequency test observations between PV and APEX in conjunction with the GMVA session C242.

    System schematics

    FPT_TEST_PV.png

    Setup 86 GHz

    Target band: 86.012 - 87.036

    1st LO:     93.012 GHz (confirm that this is possible)

    RF:           E90LI (4-9GHz LSB)   

    2nd LO (DBBC3): 9.048 GHz

    Sky freq:    83.964 - 88.060 GHz

     

    sky 83964 84988 86012 87036
    after 1st DC 9048 8024 7000 5976
    after 2nd DC 0 1024 2048 3072

    => DBBC3 should use filter1= 2000-3000

    Setup 260 GHz

    Target band: 258.036 - 259.060

    1st LO:     267.084 GHz (confirm that this is possible)

    RF: ?? (assuming LSB 4-9 GHz)

    2nd LO (DBBC3): 9048 GHz

    Sky freq:    258.036 - 262132 GHz
     

    sky 258036 259060 260084 261108
    after 1st DC 9048 8024 7000 5976
    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_Oct24.py dbbc3  (sets the 1GHz filters and the LO freqs)

    Modules & Recorders

    recorder2

    slot 1: ??

    slot 2: ??

    recorder3

    slot 1: ??

    slot 2: ??

     

    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

    Action

    • Change GMVA modules to recorder1 (SS)
    • Insert new modules to recorders 2 & 3 (SS)
    • update google sheet  (SS)