Keywords: pako

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### Setup of the Backends (Spectrometers and Continuum)

    !
    ! $Id$
    !
    BACKEND /CLEAR                              ! clear all backend definitions
    !
    !!      option /R is short for /RECEIVER
    !!      name   # resolu bandw.fShift   RX
    !!      ------ - ------ ----- ------   ----
    !
    BACKEND CONTIN 1 500      500    0  /R A100 ! continuum backend full syntax
    BACKEND CONTIN 2 500      500    0  /R B100
    BACKEND CONTIN 3                    /R A230 ! continuum backend short syntax
    BACKEND CONTINUUM 4                 /R B230
    !
    BACKEND 4MHz   1   4     1024    0  /R A230 ! 4MHz filters full syntax
    BACKEND 4MHz   2                    /R B230 ! 4MHz filters short syntax
    !
    BACKEND 1MHz   1   1      512    0  /R A230 ! 1MHz filters full syntax
    BACKEND 1MHz   2          256       /R B230 ! 1MHz filters short syntax
    !
    BACKEND 100kHz 1   0.1     12.8  0  /R A100 ! 100kHz filters full syntax
    BACKEND 100kHz 2           12.8     /R B100 ! 100kHz filters short syntax
    !
    BACKEND WILMA  1   2     1024    0  /R A100 ! WILMA setup full syntax
    BACKEND WILMA  2                    /R B100 ! WILMA setup short syntax
    !
    BACKEND VESPA  1   0.020   40.0  2  /R A100 ! standard VESPA setup
    BACKEND VESPA  2   0.020   40.0  2  /R B100 !
    BACKEND VESPA  3   0.040   80.0 -2  /R A230 !
    BACKEND VESPA  4   0.040   80.0 -2  /R B230 !
    !
    BACKEND VESPA  5   0.020   40.0  2 -        ! VESPA
                          /RECEIVER A100 B100 - ! with 2 receivers
                          /MODE POLARIZATION    ! in polarization mode
    !
    BACKEND VESPA  6   0.040   80.0 -2 -        ! VESPA
                          /RECEIVER A230 B230 - ! with 2 receivers
                          /MODE PARALLEL -      ! in paralell mode
                          /PERCENTAGE 91        ! non-standard precentage used
    !

To execute this script, simply enter:

    @ demo-backends

Normally the command `BACKEND` has 5 parameters: backend name, part number, resolution [MHz], bandwidth [MHz], and frequency shift [MHz]. Option `/RECEIVER` connects this backend part to a receiver. This receiver must have been previously specified with `RECEIVER`.

For some backends the resulution, bandwidth, and/or frequency shift are fixed and a shorter syntax is possible, see, e.g., the example above for the continuum backends. See the `HELP` for complete information.

`/DISCONNECT` disconnects a backend (part) while retaining its parameters.

`/CONNECT` (re-)connects the sepcfied backend (part).

Normally the continuum backends are used for pointing and focus.

Next: Calibration Up: Spectral Line Observations with Previous: Setup of the Receivers Contents Index