From: Betty Bezverkhny (bbezverk_at_star.physics.yale.edu)
Date: Wed Feb 19 2003 - 16:10:03 EST
ok,
we've decided that the readings on crate 63 are faulty and turned the
crate on. A few hours ago this action corresponded to an alarm on HV
trigger _and_ TOF, now TOF is FINE, although two slots on the trigger HV
still complain. Steve (from the slow controls) is trying to ascertain
whether those are also faulty readings or something else.
we hope the crate is fine, and that the glitch was in the readouts.
-Betty
------------------------------------------------------------------------------
Betty Bezverkhny
Yale University Physics Department
Wright Nuclear Structure Laboratory,
272 Whitney Avenue, Room 302
New Haven, CT 06511
203.432.9742
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On Wed, 19 Feb 2003, Frank Geurts wrote:
> So it appears to be an inconsistency between actual readout of ~20A and
> slowcontrols idea of the readout of ~90(!)A.
> Maybe our SlowControls-czar Bill W. can comment on this ...
>
> cheers,
> -f.
>
>
>
> Frank Geurts wrote:
> > Jack,
> > Zhangbu just looked at the readings on the VME power supply at confirms
> > a rather high current on the +12V.
> >
> > -frank
> >
> >
> >
> > Frank Geurts wrote:
> >
> >> Hi Jack,
> >> the powersupply of vme crate 63 has changed its Slowcontrols status
> >> from the occasional Yellow to a permanent Red. According to Betty
> >> Bezverkhny who's the detector operator for the day shift this started
> >> earlier today and involves the +12v supply. Geary mentioned that this
> >> crate has a history as far as those vme alarms are concerned but
> >> "permanent red" is maybe Not-A-Good-Thing(tm). I've asked Zhangbu to
> >> take a look at the readouts on the crate just to make sure ... but
> >> otherwise whadda'ya suggest?
> >>
> >> cheers,
> >> frank
> >>
> >
>
>
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