Re: Additional data

[Gerard Visser <gvisser@indiana.edu>]

Hi Yves,
	Why do you not trigger the ADC readout internally? The Struck ADC 
certainly has this capability. Isn't it supported by the JLab/CODA 
setup? It would be really best to avoid splitters etc. on your analog 
signals. Unless you've verified them by for instance a network analyzer 
sweep up to at least 100 MHz... Don't trust a homebrew splitter without 
such a verification, if the signal shape is important.
	If the DAQ setup cannot be triggered internally from the ADC, you 
should nevertheless at least be able to use the ADC's internal trigger 
features, set for front panel LEMO trigger out, and connect that to the 
DAQ system trigger interface as per usual (as you would with your cosmic 
paddle trigger).

	Gerard

Yves Van Haarlem wrote:
...
> A collimated (0.5~mm) Fe-55 source is placed close to the straw. The
> signal coming from the straw is preamplified and shaped. After the shaper
> the signal is split in two, using a passive LEMO splitter. One part goes
> to a discriminator (it is not a CFD) afterwards it is delayed a bit and
> triggers the fADC. The other part goes directly to an fADC input.
>...