February 25, 2009 online meeting minutes
present: Sergey Boyarinov
1. JLAB discriminators
- remove preamplifiers (at least reduce gain): can be done by not-installing some components; different amplifiers can be installed
- mask outputs
- add test input: directly to digital side
- individual channel thresholds, min 10 mV - real
- add second output connector (or high dense connector ?): yes
- different thresholds for output 1 and output 2 (optional; maybe sacrofise individual threshold, maybe groups of 4 etc)
- individual programmable width step: 8ns -> 4ns, the less the better; max=100ns; non-updating mode
- channel-based output delays for trigger output connector - optional, 500ns max
- 32-channel: will try (backplane board ?)
- fast enough: min 150MHz
- internal delay (20 ns is Ok)
- thermodrift - to be studied
- remove monitor
- not-stop scaler readout - optional
- keep gate/veto (2 inputs)
- OR for trigger output (NIM)
- VME readout: write/read all registers, A32/D64 with DMA