From: John Mitchell (John.W.Mitchell_at_nasa.gov)
Date: Fri Feb 28 2003 - 16:47:31 EST
Jack,
The TOF System Live signal should be connected to the DAQ LIVE input
of the TCD. I think there is a problem with the description of this
in the manual, however. It indicates that the input should be a BUSY
from DAQ. That is the way it worked the last time, but we now send a
LIVE signal.
John
At 2:31 PM -0500 2/28/03, JMEngelage_at_lbl.gov wrote:
>frank/john ---
>
> i'm afraid i'm going to be anal on this one (yes, even more
>than usual). while i apreciate the info and it is very helpful
>i'm going to lean on you to go that extra inch and translate
>
>* TOF-System-Live at TCD Det Live (that's is easy because that one has
>a proper label at the TCD)
>
>or
>
>Det Live - TOF System Live (active high TTL when Live)
>
>into one of the options on the 2nd page of fred' TCD manual (on
>the trigger web under Run2003). are you refering to
>DAQ LIVE
>PIN
>MISC IN
>TRIG
>
> thanx in advance, j.
>
>
>
>----- Original Message -----
>From: Frank Geurts <geurts_at_rice.edu>
>Date: Friday, February 28, 2003 1:27 pm
>Subject: Re: going offline
>
>> Jack -- as far as I can tell these *should* be the TCD connections
>> for TOF:
>> * TOFp-L0 at TCD-Out 2
>> * TOFp-Pulser at TCD-Out 4
>> * TOF-System-Live at TCD Det Live (that's is easy because that one
>> has a
>> proper label at the TCD).
>>
>> This is how John documented it in
>>
>http://mac8.rice.edu/~TOF/TOFp/operations/manuals/TOF_logic_16Dec02.pdf
>> and I assume that Fred did not change any pin assignments as such
>> when
>> our old TCD got replaced with the new one.
>>
>> -frank
>>
>>
>>
>>
>>
>> JMEngelage_at_lbl.gov wrote:
>> > guys ---
>> > i talked with fred. he wasn't sure of the connections either.
>> > however, he thought the busy cable that was reinstalled in the
>> > port labeled "daq live" was correct. the other two connections
>> > were a "TOF out" and a "TOF pulser". any info/pictures would
>> > be apreciated.
>> >
>> > -j.
>> >
>> >
>> > ----- Original Message -----
>> > From: Frank Geurts <geurts_at_rice.edu>
>> > Date: Friday, February 28, 2003 11:42 am
>> > Subject: Re: going offline
>> >
>> >
>> >> (i cc'd this message to Jack, Hank and Jeff too)
>> >>
>> >> I have asked Geary to join Jack as soon as he has arranged his
>> >>access.
>> >>As far as i can tell these are the most likely scenarios:
>> >>
>> >>1) wrong TCD connection: Hank mentioned that he had a little
>> >>problem
>> >>recognizing which of our connectors should go into which TCD
>> >>in/output.
>> >>We have our cables properly labeled but there are (no more)
>> labels
>> >>on
>> >>these new TCDs ... could there be a mix-up?
>> >>
>> >>2) Jeff suspects a busy problem and frankly i think this might
>> >>well be
>> >>it: I recall that when testing the basic TCD connectivity (after
>> >>Hank
>> >>reconnected) I noticed that only one non-zero token made it
>> >>through the
>> >>system. The TCD stopped issueing tokens after that usually
>> because
>> >>it
>> >>sees our system busy and waits for it to come alive again for
>> the
>> >>next
>> >>token. Disconnecting the input to the NIM->TTL converter at 2-1-
> > 1-
> > >>1 made
> > >>the TCD fire the rest of the tokens again. Our busy is
> > >>constructed from
> > >>our LocalBusy, the LocalDAQBusy *and* the "L0 TCD Out2" pulse
>> ...
>> >>so
>> >>either this is again related to item 1 (very likely) or this is
>> a
>> >>hardware failure in the BUSY construct (we didn't change
>> anything
>> >>to
>> >>that in the last access).
>> >>
>> >>
>> >>John: do you remember where the L0 TCD connection should be on
>> the
>> >>TCD
>> >>(or does Fred Bieser know?)
>> >>
>> >>-frank
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>W.J. Llope wrote:
>> >>
>> >>>hi guys,
>> >>> i have to go offline for the weekend in a few mins-
>> >>>i suspect this latest problem is not us but since frank is all
>> >>>over it if it is us i'm sure he will find the problem....
>> >>>if it is and we can't fix it remotely i wouldn't consider it
> > >>>a complete disaster if we missed a day or two until there was
>> >>
>> >>some kind of
>> >>
>> >>>access... the machine and star are not in good shape recently
>> >>>anyway.
>> >>>
>> >>>good luck frank - have fun at BB
>> >>>
>> >>>_________________________________________________________
>> >>>W.J. Llope, Ph.D. Res. Assoc. Professor
>> >>> http://wjllope.rice.edu/default.html
>> >>> llope_at_physics.rice.edu
>> >>>T.W. Bonner Nuclear Lab.
>> >>>Rice University, MS-315
>> >>>6100 S. Main phone: 713-348-4741
>> >>>Houston, TX 77005-1892 fax: 713-348-5215
>> >>>
>> >>>
>> >>
>> >>
>> >
>>
>>
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