Experimental Physics and
Industrial Control System

Ralph Lange <[email protected]> · Mon, 30 Aug 2004 17:21:01 +0200

For the records:

Here's a short summary of the answers I got regarding VME trigger delay
boards.

 o Timo Korhonen <[email protected]> mentioned an IP-module by Hytec
   with similar specs.

 o Steven Hartman <[email protected]> said they didn't find anything
   when searching 9 months ago and are planning to use the Highland
   boards (eventually add a free standing GPIB trigger delay generator).

 o Richard Farnsworth <[email protected]> pointed me to
   their choice, the GPIB standalone Stanford research DG535.

 o Andrew Kreps <[email protected]> has designed a VME board that almost
   meets the specs I was posting. It looks very interesting as most of
   the real stuff is in a FGPA, so features might be twisted to match.

Meanwhile we also considering having a student design a board (thesis
work) to our needs, maybe inspired by the ANL design.

I will probably send another note on tech talk when we come up with a
working result for all this.

Again: Thanks a lot for your interest and cooperation!

Ralph

>>>>> "Ralph" == Ralph Lange <[email protected]> writes:

  > Hi All,
  > after a visit in our hardware zoo we found that we might want to look
  > for a new solution for our standard trigger delays.

  > These are the features that we are looking for (more or less):

  >  o VME form factor and bus
  >  o One trigger in, 8 outputs with separately programmable delay and
  >    pulse width
  >  o Delay: range 0 - 100ms, resolution ~10ns
  >  o Pulse: length 10ns - some 100us, polarity programmable
  >  o Outputs can be suppressed separately (programmable)
  >  o All output registers can be read back

  > We are now using a card by the ESRF (VPDU), which resembles a TTL
  > graveyard that we would rather replace or redesign than rebuild.

  > Our high precision high resolution triggers are handled by Highland's
  > V851/B951, which is too valuable to be used everywhere.

  > Ideas anyone? Open for suggestions!

  > Thanks for your cooperation!
  > Ralph

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System