[evla-sw-discuss] Feed heaters

[Bryan Butler]

you mean the software to turn them on automatically, i presume, since the option 
to override that will reside in the M303.

either in the F317 or the antenna server (which is now embodied in 
AntennaPhysical) seems the only logical places.  if pete or hichem told me it 
was easy to put an "ostream watcher" in the F317, i'd say put it there, because 
it's closer to the "instrument".  otherwise, put it in AntennaPhysical.

	-bryan


On 12/20/06 14:09, Barry Clark wrote:
> 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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