AIDA
GELINA
BRIKEN
nToF
CRIB
ISOLDE
CIRCE
nTOFCapture
DESPEC
DTAS
EDI_PSA
179Ta
CARME
StellarModelling
DCF
K40
DESPEC
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Entry time:
Sat Mar 29 11:26:21 2025
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> 10.30 : Turn off AIDA FEE64s > > Prepare a ground cable for snout - M10 terminal on one end for copper bar. Will affix with Cu tape for now (no free screws) > > Plan for today: > > Remove extraneous ground cables > Check ground of all FEE64s esp. 05 and 07 - include on FEE64 side. > 14:42 - Done all grounds seem snug, extra ground cables removed. Try power on and check > > Try powering just DSSD1 FEE64s > - No change (aida01 125k, aida02,03,04 - 400k) > > Try grounding snout > 14:59 Connection to snout very bad as tape does not fix well to thick copper in braid. nO difference either way. > > Probe PSU output with Battery DSO if available > - See figure 2 > > Try shuffling FEE64 power allocation > - 15:32 - Now as 1 X 3 X 2 X 4 X > 5 X 7 X 6 X 8 X > (Also FEEs on own pair) > No difference to rates > > Multimeter voltages for last socket of PSU1 (paired with aida04): > 1 : 6.02 V > 2: 6.02 V > 3: 6.02 V > 4: -6.44 V > 5: 7.74 V > > Similar on PSU2 > > Voltage between right (GND) pin 5 and 1 (pin 5 is COM) is -0.4 V, similar if pin 4 is COM. Pin1-3 are 0 V when paired >
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