[evlatests] slow attenuator setting on ea16 IF D

[Claire Chandler]

Why would this only affect IF D, and not A/B/C?

Claire

On Mon, 8 Aug 2011, Doug Whiton wrote:

>
>> I would consider a sticky subreflector that moves a little further
>> each time it is commanded until it finally gets there.
>>
>
> I witnessed this just last Friday.  I noticed that Ants. 11, 12, 13, 16
> and 27 were having difficulty settling into position.  They would move to
> within a few counts on either side of the intended position, waiting about
> 15-20 seconds between each try, then overshoot to the other side.  I
> talked with Wayne about this.  He said that a firmware change and possibly
> a hardware change would be necessary if we wanted to fix this.
>
> Doug
>
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