Pyramid D100 User Manual page 3

PSI System Controls and Diagnostics
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
D100 User Manual D100_UM_081027 Page 3 of 46