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consolidated hardware Stabilizer+Pounder #112

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jordens opened this issue Nov 27, 2023 · 1 comment
Open

consolidated hardware Stabilizer+Pounder #112

jordens opened this issue Nov 27, 2023 · 1 comment

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@jordens
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jordens commented Nov 27, 2023

The genericism of Stabilizer is a limitation to the performance when using Pounder (input stage limited in slew rate, distortion noise to achieve flexibility, layout is tight and complex/high viscosity, component choice trade-offs, software/assembly/debugging complexity).

I'd like to consider a single board hardware variant of Stabilizer+Pounder with the following deliberations:

  • Single board (debugability, reduced complexity of mechanics, software etc)
  • Use CPU's ADC and DACs, no external ADCs, DACs
  • no PGIA, merged IF amp and ADC gain+shifting stages
  • no EEM/LVDS interface
  • design and layout revised for 70 dB RF isolation (input-output and between channels, i.e. at the level of the DDS)
  • potentially a variant with an FPGA as coprocessor: then it would be a consolidated version of FastServo+Pounder, i.e. Zynq again with external ADC
@gkasprow
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gkasprow commented Nov 29, 2023

good idea. I don't like these kinds of combo due to ground loop issues

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