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

At the prompt PAKO > enter, e.g.:

    !
    BACKEND CONTINUUM 1                 /r A100 ! continuum backend
    BACKEND CONTINUUM 2                 /r B100
    BACKEND CONTINUUM 3                 /r A230
    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 !
    !

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.