[evla-sw-discuss] Keeping track of spectral windows at the EVLA: SDM vs. BDF

[Michael Rupen]

Hi Sonja --
>
>
> Proposed new attributes convey important information; it seems to me that it is better
> to define two new VCI attributes (swbbName and swIndex).
> Using VCI "name" for this purpose will look as a cludge; at this early stage we can add things to schema without worrying about legacy code.
> Adding a new attribute to VCI schema is not a big deal; most of the work is in implementing the functionality.

Sounds good to me!


>
> Comment regarding selection of swIndex step 4:
> OPT assigns the Subband ID (SBID).
> The CM uses the filter with the same ID as subband, if possible.
> If not possible, CM uses the first available (i.e. unused) filter).
> I propose that the swIndex in step 4 should be assignd according to
> the SBID (most of the time that would be the same as Filter ID).


Good point; that makes more sense, and uses information that is actually
available to the OPT.


>
> Should I then add the following:
> swbbName to element baseband, type:string (in fact enumeration)
> swIndex to element subband, type:int.

Yep.

            Michael