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<== Date ==> <== Thread ==>

Subject: Question on waveform monitoring
From: "Chestnut, Ronald P." <ronc@SLAC.Stanford.EDU>
To: "'tech-talk@aps.anl.gov'" <tech-talk@aps.anl.gov>
Date: Thu, 05 Jun 2003 14:48:16 -0700
We have a special record to deal with digitizers, where the waveforms associated with each channel have fields with imaginative names like .ARY1, .ARY2 etc. These waveforms hold the past few pulses of Low-level RF data, and are meant to be picked up by the archiver when a trip occurs and new data are available. These internal arrays (ARY1, ARY2, etc.) are only read from the hardware (SIS or Joerger digitizers) upon a trip.

It seems that these fields are not being successfully monitored. Two stray waveforms have appeared in the archiver, but hundreds of others have not.

We could strobe these data out to traditional waveform records (and have in some cases). Data handled in this way do appear in the archiver, indicating that the monitoring worked. 

Is there a way to have our cake and eat it too? Can we monitor these separate fields in the channel archiver or do we have to copy the data one more time to trigger a monitor?

/Ron Chestnut

Replies:
Re: Question on waveform monitoring Marty Kraimer

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