[evlatests] Ant 1
Rob Long
rlong at nrao.edu
Thu Nov 19 17:11:09 EST 2009
I just spoke with Vivek and he let me know that the antenna is still
wandering around in phase. I am sending Jerry out to antenna 1 as I
write to swap out an L305. We will re-sync the antenna and reset the
DTS modules after the L305 is up and stable.
Rob
Vivek Dhawan wrote:
> Hi Rob,
>
> Antenna 01 phase is still wandering, all IFs the same.
>
> Rob Long wrote:
>> I reset (lowered) some levels on ant 1 today and restarted the antenna
>> electronics. The optical power level into the L304 was slightly high
>> (by 1 dB) which we know can sometimes cause the phase wander problems
>> we have seen.
>>
>> When anyone gets a chance to look at ant 1's phase stability again,
>> please let me know the results.
>>
>> Thanks,
>> Rob
>>
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