Two basic types of digitizing electronics will be used as an interface
with the Hall D detector. In order to support a deadtimeless readout
scheme a high-speed sampling (250
MHz ) flash ADC as well as a high
resoulution (50 ps) multi-hit pipelined TDC are required. Although there
are no commerically available products that are suitable the technology does
exist to custom design boards.
In addition to the digitizing electronics, the Hall D trigger system requires distribution of a high speed clock for purposes of passing trigger information to the front ends as well as trigger syncronization for event building.