[evla-sw-discuss] Feed heaters

[Barry Clark]

The point remains that the feed heaters are being left on much more than they 
should be.  I think we need software to correct this situation.  Think green.


> 
> The control for turning the feed heaters on and off is on the f320 and 
> m303 screens.
> 
> --Rich
> 
> Bryan Butler wrote:
> > i thought at one point that rich was going to put this control onto the F317 
> > operator's screen (the equivalent of 1 + 2 below)?
> >
> > rich can correct me if wrong, but my recollection is of seeing a diagram that 
> > bob hayward gave rich, which had the feed heater info (and ability to control) 
> > on it.
> >
> > 	-bryan
> >
> >
> > On 12/20/06 10:02, Barry Clark wrote:
> >   
> >> Jim Ruff was just in my office asking about automated control of the
> >> feed heaters.  They should be turned on/off by the dewpoint depression
> >> below ambient, as found from the weather station.  Implementation should
> >> wait for the installation of the M303, where the control will eventually
> >> be moved.
> >>
> >> Three possible places to put this code:
> >> 1.  Operator's screen.  Approach would be same as for VLA - if software
> >> believes heaters are in wrong state, tell operators, who then have a
> >> way to send command to all known MIBs.
> >> 2.  M302 screen. (along with other M302/3 functions like E-stop etc.).
> >> Again would take the "recommend to operator" approach.
> >> 3.  AntennaPhysical.  Easy to implement an automated function.  However,
> >> one would like to have an operator override capability.  Adding a 'rest'
> >> or 'mib' interface would be a possible way to implement this.  Not quite 
> >> sure what screen would talk to it, though.
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