[evlatests] EVLA Misbehavior Last Nigh

[Ken Sowinski]

> On Fri, 4 May 2007, Barry Clark wrote:
>
>> Oh, I forgot to mention.  Antenna 24 was also doing that during the day
>> yesterday.  It was totally freaking out Telcal, which I was using heavily,
>> so I stopped including it.
>>
>>>     1) Antenna 24 is seriously misbehaving.  The A and C IFs have
>>> perhaps a dozen abrupt drops in amplitude, by about 30%.

Leon Abeyta found the problem.  The sync_enable switch had
been left in the enable state and the L305 was responding
to variations in the rise time of the ten second tick.
This is consistent with all the reported symptoms.  He
has now turned of sync_enable.