[evlatests] WIDAR0 results -- antenna 23
Barry Clark
bclark at nrao.edu
Wed Jun 3 11:45:26 EDT 2009
Symptoms most compatible with something nasty happening in the FORM,
for instance, alternate frames presented twice instead of all frames
going through.
Rob Long wrote:
>
> Ken Sowinski wrote:
>> On Wed, 3 Jun 2009, Rob Long wrote:
>>
>>> The other thing we should check is optical levels into the L304 in the
>>> antenna. If the signal is high, we have seen oscillations in the LO due
>>> to overdriving the receiver diode.
>> Maybe not, because this antenna looks OK with the old correlator.
>> I lean toward the deformatter on the station board or something
>> in the wideband part of the station board signal path.
>>
> OK, this makes sense. I didn't realize the old correlator wasn't seeing
> this too.
>
> Rob
>
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