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RECEIVER

    RECEIVER              receiverBand    lineName [frequency SB]
    RECEIVER BOLOMETER    bolometerName   [pixel]

    Specify selection and setup for receivers.

    The first form is for heterodyne receivers,
    the second form for bolometers.

    Heterodyne:
    ===========

    Character    :: receiverBand      ! name of receiver band to connect
    Character*12 :: lineName          ! name of line. don't use @ < >
    Real         :: frequency         ! [GHz]
    Character    :: SB                ! sideband or subband
                                      ! choices for HERA: LSB USB
                                      ! choices for EMIR: LO LI UI UO

    Choices for receiverBand are:
    E090 E150 E230 E330 HERA1 HERA2

    lineName is limited to 12 characters.


    NB: Don't use / & < > in names of sources, lines, projects,
    PI, observer, operator, etc. Don't use ()/ in source names.


    E090 E150 E230 E330 are the 4 EMIR (Eight MIxer Receiver) bands,
    HERA1 and HERA2     are the 2 parts of HERA (HEterodyne Receiver Array).

    If only receiverBand and lineName are specified, we try to read the
    frequency and sideband/subband from the line catalog specified with:
    CATALOG LINE fileName.

    The local oscillator for the receiverBand will be set so that the
    frequency (corrected for the Doppler shift) will be in the requested
    sideband/subband SB.  See receiver documentation for the exact values
    of the IF.

    NOTE: EMIR subbands, IF cables, and Backends

    The output signals from EMIR are transmitted to the spectrometers and
    NBC through 8 IF cables. Each IF cable carries one subband of bandwidth
    4 GHz. This subbands are LO, LI, UI, or UO.

    NBC, 4MHz, WILMA, and VESPA can only(!) be connected to IF cables 1 to 4.
    FTS parts 1 to 4 can also be connected to IF cables 1 to 4.

    The command options RECEIVER /HORIZONTAL and RECEIVER /VERTICAL allow
    to select up to 4 EMIR subbands that will be transmitted through IF
    cables 1 to 4 (compare HELP RECEIVER /HORIZONTAL and the EMIR user
    documentation). This selection can include Outer subbands.

    In addition, the IF cables 5 to 8 carry the 4 Outer subbands
    corresponding to the subbands selected for IF cables 1 to 4. E.g., if
    we select for IF 1 to 4:
    E230 ver UO    E090 ver UI    E230 hor UI   E090 hor UI
    then the IF cables 5 to 8 will transmit:
    E230 ver UO    E090 ver UO    E230 hor UO   E090 hor UO.

    Only FTS parts 5 to 8 can be connected to IF cables 5 to 8.

    BACKEND NBC|WILMA|FTS /DEFAULT will automatically set the maximum
    number of backend parts for all available subbands.

    BACKEND BBC is completely independant of the sub band selections for
    the IF cables.

    Bolometer:
    ==========


    RECEIVER BOLOMETER    bolometerName   [pixel]
    RECEIVER BOLOMETER    GISMO
    RECEIVER BOLOMETER    NIKA            [pixel]

    Character :: bolometerName     ! name of bolometer
    Integer   :: pixel             ! number of NIKA pixel

    Choices for bolometerName are:
    GISMO NIKA

    If the pixel number is specified with RECEIVER BOLOMETER NIKA, pako
    will try to find and use the Nasmyth offsets for this pixel in a
    coresponding configuration file.

    However, if Nasmyth offsets are explicitly specified with
    OFFSETS /SYSTEM Nasmyth, the values from OFFSETS take precedence over
    any values found for a NIKA pixel.


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Gildas manager 2023-06-01