PSI System Controls and Diagnostics
D100 User Manual D100_UM_081027 Page 3 of 46
Acquiring spectra with the PSI Diagnostic program..............................................................................................23
Principle of Operation...............................................................................................................................................26
Wideband digital pulse processing.........................................................................................................................26
D100 Circuit Overview...........................................................................................................................................27
Optimizing the Pulse Processing Algorithm...........................................................................................................30
Overview of the FPGA algorithm...........................................................................................................................30
Regions of interest .............................................................................................................................................30
Data processing stages .......................................................................................................................................31
Pulse processing user parameters..........................................................................................................................32
Shaping Time .....................................................................................................................................................32
Peak Width.........................................................................................................................................................32
Shaping Samples................................................................................................................................................32
Derivative Discriminator....................................................................................................................................32
Pulse Discriminator............................................................................................................................................32
Pile Up ...............................................................................................................................................................33
Decay Time........................................................................................................................................................34
Gain, Offset........................................................................................................................................................35
Connectors .................................................................................................................................................................36
Front panel connectors...........................................................................................................................................36
Photomultiplier control ......................................................................................................................................36
Test I/O ..............................................................................................................................................................36
Pulse signal input ...............................................................................................................................................37
Ground lug .........................................................................................................................................................37
Rear panel connectors............................................................................................................................................37
Power input ........................................................................................................................................................37
Fiber-optic direct data stream output .................................................................................................................37
Fiber-optic loop communications ......................................................................................................................37
Controls and Indicators............................................................................................................................................38
Front panel controls...............................................................................................................................................38
Rear panel controls.................................................................................................................................................38
Address switch ...................................................................................................................................................38
