> > > 
> > > 14.00 Both AIDA NIM bins U/S 
> > >       Upper NIM bin - BNC PB-4, Ortec 433, 2x CAEN N1419, 1x CAEN N1419B - ac mains fuse 100V/8A/slow? blowing
> > >       Lower NIM bin - 11x MACB - not powering up
> > > 
> > >       Replaced both NIM bins.
> > >       Upper NIM bin - 11x MACB
> > >       Lower NIM bin - BNC PB-4, Ortec 433, 2x CAEN N1419, 1x CAEN N1419B
> > > 
> > > 15.50 Julabo FL11006 chiller ON - set point +20 deg C
> > >       B2F/F11 ambient temp +24.0 deg C, RH 54%, DP +13.8 deg C
> > > 
> > >       Bias 6x MSL type BB18 DSSSDs - see attachments 1-2
> > > 
> > > 16.10 Startup DAQ nnaida1-24 *except* nnaida19
> > > 
> > >       System-wide checks
> > > 
> > >       Check clock status OK
> > >       Check ADC calibration - nnaida7 failed
> > >       Check ASIC clock timestamp - multiple failures - see attachment 3
> > >       Check SYNC errors not counted Since Baseline - see attachment 4
> > >       Check SYNC pulses received - see attachment 5
> > > 
> > >       BNC PB-4 
> > > 
> > >       Amplitude 90,000, x5 attenuator IN
> > >       t_r 50ns, tau_d 50us
> > >       Polarity -
> > >       INT ref, delay MIN, tail pulse
> > > 
> > >       FEE64 temperatures - see attachment 6
> > > 
> > > 16.34 R1 starts (directory Aug2016)
> > > 
> > >       slow comparator 0x10, LEC/MEC fast comparator 0x10
> > > 
> > >       merge 555k data items/s, tapeserver 4430 kb/s
> > Looks like a problem with the inter-MACB wiring.
> > The screen shots show groups of 4 with the problems.
> > I suggest re-seating the short HDMI cables and reset the system.
> 
> Short HDMI cables re-seated. See attachment 1

ok, the discrepancy is odd. Not sure if it is due to an uneven reset or more noise in the wiring.
In system wide checks redo the baseline for the SYNC error counters and keep an eye on it.

Maybe a power cycle will bring all the SYNC received counters into line.

Certainly they should be exactly the same.

Is there any correlation between the ones that are wrong and the MACB layout/cabling ?