The Pickoff Card

The VXI Pickoff Card

The VXI Pickoff Card receives the single-ended signals for the Ge Center, Ge Sides, BGO Sum, and BGO Pattern (BGO-P does not exist here) from the Slope Box. The VXI pickoff converts these to differential signal format before sending them to the digitizer.

There are three gain range options (jumper selectable) for the Ge Center: 2, 5, 10 MeV

There is a fixed Preamp Reset Clamp that drives the Ge Center back to baseline after a preamp reset. This sometimes has known oscillation problems (ringing) that can hinder resolution.