Window Discriminator

[Thomas Chimento]

Can anyone recommend a good hardware window discriminator for use
in single unit recording? NOT GOOD would be a discriminator that
simply has two horizontal 'lines' that your signal passes through
to be accepted. Good is more like the BAK product. It has a trigger
level followed by a vertical line that can vary a lower and upper 
limit and be moved in time. Only signals that pass reach the trigger
level AND pass through the vertical line are accepted. Although
BAK has a nice system, it is a noisy and hard to use device.

Please reply directly. If anyone wants the results of my search 
also please ask directly to:

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*Thomas C. Chimento Ph.D.  Internet: chimento at pioneer.arc.nasa.gov *
*NASA, Ames                   Phone: 415-604-0376 (and Voice Mail) *
*Biocomputation Center          Fax: 415-604-3954                  *
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