AIDA
GELINA
BRIKEN
nToF
CRIB
ISOLDE
CIRCE
nTOFCapture
DESPEC
DTAS
EDI_PSA
179Ta
CARME
StellarModelling
DCF
K40
AIDA
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Sat Mar 29 12:26:27 2025
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> Offline analysis of AIDA data files from R31_0 to c. R31_5 (elapsed time 1120.45s) > > Note impact of increased noise ( https://elog.ph.ed.ac.uk/AIDA/494 )on LEC spectra, > particularly for DSSSDs #1 & #2. > > *** ENTRY finish > > *** data items: 1231535778 ( 133914.33 Hz) > *** ADC events: 112061604 ( 12185.32 Hz) > *** time warps: 0 ( 0.00 Hz) > *** DSSSD # 1 count: 24147717 old count: 24147349 dt: 1120.45 s LEC rate: 21551.85 Hz > *** DSSSD # 2 count: 22686292 old count: 22685929 dt: 1120.45 s LEC rate: 20247.53 Hz > *** DSSSD # 3 count: 13051178 old count: 13050922 dt: 1120.45 s LEC rate: 11648.18 Hz > *** DSSSD # 4 count: 11173273 old count: 11173038 dt: 1120.45 s LEC rate: 9972.15 Hz > *** DSSSD # 5 count: 9478275 old count: 9478090 dt: 1120.45 s LEC rate: 8459.36 Hz > *** DSSSD # 6 count: 15562532 old count: 15562263 dt: 1120.45 s LEC rate: 13889.57 Hz > *** DSSSD # 1 count: 165 old count: 165 dt: 1120.45 s HEC rate: 0.15 Hz > *** DSSSD # 2 count: 275 old count: 275 dt: 1120.45 s HEC rate: 0.25 Hz > *** DSSSD # 3 count: 523 old count: 523 dt: 1120.45 s HEC rate: 0.47 Hz > *** DSSSD # 4 count: 469 old count: 469 dt: 1120.45 s HEC rate: 0.42 Hz > *** DSSSD # 5 count: 297 old count: 297 dt: 1120.45 s HEC rate: 0.27 Hz > *** DSSSD # 6 count: 118 old count: 118 dt: 1120.45 s HEC rate: 0.11 Hz > > *** ENTRY finish ends > > S O R T S T O P P E D ..... Tue Nov 29 14:18:07 2016 > > Spectrum s400 displays the frequency of bits 0-47 of the (MBS) 25MHz correlation scaler. > > For those bits which can be expected to cycle often within the sampling period we would > expect to observe each bit with equal probability and this is observed for bits 0-31. > Conclude there is no evidence for hardware/firmware problems with the AIDA 25MHz correlation > clock for bits 0-31 and therefore probably not for bits 32-47 either. > > I think the SyncCheck issues observed could due to: > > 1) the effect of sampling data from the AIDA TapeServer data buffers, > 2) arithmetic/coding bug in the SyncCheck code > ... or ? > > I don't recall observing these issues before ... does that mean we weren't looking? ... or > that there has been some change to hardware operation, software ... ? >
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