[evlatests] 3-bit sampler status
Ken Sowinski
ksowinsk at nrao.edu
Fri Mar 2 16:30:16 EST 2012
On Fri, 2 Mar 2012, Ken Sowinski wrote:
> 4. Problems noted related to the BD (D302, D304) samplers.
> - ea17-D2 has too little power fed to the sampler.
> D1 is OK, so likely culprits are T304, wiring, or D304.
> - ea21-B2/D2 have too little power; B1/D1 are OK.
> - ea23-D2 attenuator monitor point is stuck at 31. There
> might be other modules with this problem in a channel 2
> output; this is the only one that I verified.
In the clear after-lunch light none of these problems
were seen. One problem not noticed this morning is
that the power meter for ch2 of ea17-B reads +37 dBm.
Keith promises to fix that next week.
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