[evlatests] ea02-l302-2

[Vivek Dhawan]

p.s. it seems to me the the lack of 20Hz should be on the list of alarm /
alert conditions?

On 10/03/2013 01:17 PM, Vivek Dhawan wrote:
>
> Dennis Polyard checked the L302 on the bench, and saw nothing wrong
> except the 20Hz synch signal was not getting into the module. This
> would result in the phase being set at an incorrect time, so it
> explains the symptoms we saw, i.e. correct frequency but random
> phase every time it reset.
>
> He has fixed the module and returned it to the array in ea10 L302-2.
> Antenna 10 shows no phase problems. Antenna 2 continues to behave
> well - so the issue is resolved.
>
> On 09/30/2013 02:45 PM, Vivek Dhawan wrote:
>> Hi all,
>>
>> 1. The problem is completely fixed.
>>
>> 2. To help Dennis re-create it on the bench, I suggest setting up
>>     2 synthesizers identically and commanding them at the same time,
>>     and sending the same frequency+phase every time. The one (that
>>     was) ea02-L302-2 was showing phase jumps every time it got a
>>     command, but had stable phase in between commands.
>>
>> On 09/27/2013 10:56 AM, Jerry Langevin wrote:
>>> Doug and I swapped out the L302-2 on antenna 2 for the phase jumps. If
>>> someone could look at the data and tell if this fixed the problem.
>>>
>>> Jerry
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