May 2021 eLog

2021-05-24

Author: Colin, Massimo

  • Started to try testing writing with /home/ctalab/software/SMART/CTA2_sw_simple/host_sw/CTA_script.txt
  • Got it running by doing: sudo ip route add 192.168.6.15 dev enp3s0
  • Output from CTA_script
    • ctalab@ctalab-Precision-3630-Tower:~/software/SMART/CTA2_sw_simple/host_sw$ ./CTA_script.txt
      Reset
      Wrote SPI reg 0 with 100- read back 100
      Wrote SPI reg 1 with 100- read back 100
      Wrote SPI reg 2 with 100- read back 100
      Wrote SPI reg 3 with 100- read back 100
      Wrote SPI reg 4 with 100- read back 100
      Wrote SPI reg 5 with 100- read back 100
      Wrote SPI reg 6 with 100- read back 100
      Wrote SPI reg 7 with 100- read back 100
      Wrote SPI reg 8 with 100- read back 100
      Wrote SPI reg 9 with 100- read back 100
      Wrote SPI reg 10 with 100- read back 100
      Wrote SPI reg 11 with 100- read back 100
      Wrote SPI reg 12 with 100- read back 100
      Wrote SPI reg 13 with 100- read back 100
      Wrote SPI reg 14 with 100- read back 100
      Wrote SPI reg 15 with 100- read back 100
      Wrote SPI reg 16 with 100- read back 100
      Wrote SPI reg 17 with 100- read back 100
      Wrote SPI reg 18 with 64- read back 64
      Wrote SPI reg 19 with 255- read back 255
      Wrote SPI reg 20 with 255- read back 255
      Wrote SPI reg 21 with 16- read back 16
      Wrote SPI reg 22 with 5- read back 5
      Wrote SPI reg 23 with 40- read back 40
      Wrote SPI reg 24 with 6- read back 6
      CTA chip registers
      Dac_0: 100
      Dac_1: 100
      Dac_2: 100
      Dac_3: 100
      Dac_4: 100
      Dac_5: 100
      Dac_6: 100
      Dac_7: 100
      Dac_8: 100
      Dac_9: 100
      Dac_10: 100
      Dac_11: 100
      Dac_12: 100
      Dac_13: 100
      Dac_14: 100
      Dac_15: 100
      Dac_16: 100
      Dac_17: 100
      EN0_7: 64
      EN8_15: 255
      EN16_18: 255
      R_ADJ: 16
      C_ADJ: 5
      PZ_ADJ: 40
      MUX: 6
      ADC: 168
  • Right after running the script successfully, a capacitor blew on the FPGA board
    • Appears to have been capacitor C3

2021-05-20

Author: Colin, Massimo

  • Acquired a number of cables to hookup to the adapter board and FPGA
    • Connections:
      • Three 5 V connections
        • Two on adapter board
        • One on FPGA
      • One 70 V connection on adapter board for SiPMs
    • Twisted all cables
    • All 5 V connections are emerging from same PSU, connected in parallel at the devices
    • 70 V connection is coming from the dual PSU hooked up in series as below
  • Next:
    • Program the SMART board with the FPGA via a connection from the FPGA to the adapter board
    • Hook up adapter board to scope, power the flasher, close the dark box, power SiPM(s), see some pulses

2021-05-13

Author: Colin

  • Figuring out how to hook up the TTi CPX400DP power supply unit in series to get the 70 V we need
    • Specs are here, manual here
    • Seems like it really shouldn't be a big deal, just hook up like: