Subject: WFD STOPMASTER on uVAX1
Roberto.Giuliani@lngs.infn.it
Date: Wed Mar 29 2000 - 12:11:31 EST
Ciao a tutti,
On uVAX 2 we recived a lot of no Q response from the WFD STOPMASTER.
Given certain trigger concerning STOP MASTER on SM1 we were unable to get the
corrisponding xSTOP trigger for SM2.
First of all we checked a lemo cable:
the output from SM1 that goes to WFD STOP MASTER input S1.
It probably was OK, but we had to make a new connector.
The actual problem concern with the output from this STPM module on SM2.
Testing this output you can see -300 mV instead of about -1 V.
We decided to use another output but the signal provided was
'slight different' .
At the end we came back to the previous output channel and for some reason
it started working properly, no more NO Qs ... etc.
We decided to leave the situation as is for the moment because now all
works fine.
We are debugging the problem.
It is possible that there is a bad circuit that do not provide the correct
signal to this channel.
Ciao, Roberto.
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