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CICADAGreenBankSpectrometer2015Apr11
(2015-04-11,
RichardPrestage
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TGBT14A_912_89 - Troubleshoot latest VEGAS problems
Goals
Details
Goals
Troubleshoot latest egregious VEGAS problems, with a focus on switching signal distribution system
Details
Get set up at 7:30am
Using old (release) version of VEGAS, BOFs, etc
Set up for A,F,G,H so that we can see what switching signal master is up to.
Initial test, check the problem is still there (xband, hi cal)
bank_gain_mode4_xband
archivist
balance
track
scan 1: Tsys varies from 62 to 4874K ! pol 0 is by far the worst this time.
Tsys = [4874.33, 554.93, 168.59, 81.34, 112.78, 109.36, 99.99, 62.35]
scan 2: repeat. Tsys = [5627, 571, 171, 81, 111, 115, 102, 62]
so, very consistent from scan to scan.
switch to mode 1
scan 3: Mode 1 Tysys looks very consistent, around 35K
scans: 4 - 9: AutoPeak - Tsys ~ 27K and very consistent
scan 10: Mode 4. Problem still there.
Appear to be running with NEW manager, but OLD BOF
lbw_gain is set to 4294967295 for Bank F, 4294967295, for Bank A, etc...
scan 11 - old manager, old BOF - goes back to the slightly faulty, normal behavior
8:45am - go home again.
--
RichardPrestage
- 2015-04-11
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Topic revision: r1 - 2015-04-11,
RichardPrestage
CICADA
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