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NOEMA April 2019

Modified 21:07, 2 Apr 2019 by jwagner | Page History
    Table of contents
    1. 1. R2DBE setup
    2. 2. Control computer setup

    Version as of 16:34, 16 May 2024

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    Temporary page for filling in details on the NOEMA April 2019 setup.

    R2DBE setup

    Clock  2048 MHz clk, 0 +- 3 dBm 50 ohm

    Driven by 5 MHz H-maser locked R&S SMB 100A

    HB input from GPS 1PPS

    1PPS ref input from Maser 1PPS, to utilize internal counter-comparator in addition to separate external 1PPS GPS-MASER unit

    R2DBE#1 : 02:44:01:02:14:0b : PPC_NET eth0 IP 192.168.0.49

    R2DBE#2 : 02:44:01:02:14:0c : PPC_NET eth0 IP 192.168.0.50

    Control computer setup

    Enabled ip4 NAT/masquerade to allow Mark6's to use further NTP, and access the internet for installing DiFX for zero baseline tests

    Added jwagner as publickey-only auth (/etc/ssh/sshd_config section like "Match User daan").

    Reverted back to the R2DBE scripts from SAO-EHT https://github.com/sao-eht rather than Radbout written-from-scratch "vlbicontrol" (we have not tested it, especially not for GMVA, and no earlier experience since neither NOEMA nor APEX were in the EHT dress rehersal)