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low_threshold_acquisition_lta_board

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low_threshold_acquisition_lta_board [2024/12/03 14:39] – [Image taking] simonlow_threshold_acquisition_lta_board [2025/10/26 13:12] (current) – [Image taking] simon
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 For further information about how the LTA works please read this {{ :readout:lta:low_threshold_acquisition_controller_for_skipper_charge_coupled_devices.pdf |article}}. For further information about how the LTA works please read this {{ :readout:lta:low_threshold_acquisition_controller_for_skipper_charge_coupled_devices.pdf |article}}.
  
 +There exists the possibility to use the LTA with the cdaq software of the ACM, but nobody knows if the ldaq library for the LTA already exists or not....
 +===== Hardware & Components=====
 +
 +The LTA uses 4 LTC2382-16 ([[https://www.analog.com/media/en/technical-documentation/data-sheets/238216fa.pdf|datasheet]]) 500ksps, Low Power SAR analog to digital converters from Linear Technology for signal digitization of the input signals, each coupled to a voltage reference. A number of ADG5234 ([[https://www.analog.com/en/products/adg5234.html#part-details|datasheet]]) high voltage Latch-Up proof, quad SPDT switches are used for directing the serial output of the ADCs to the integrated micro-controller while an additional ADG5207 [[https://www.analog.com/en/products/adg5207.html#part-details|datasheet]] high voltage, latch-up proof, 8-Channel differential multiplexer is also integrated for multiple CCD control.
 ===== LTA communication ===== ===== LTA communication =====
 If you want to talk to the LTA i have made a short step by step guide: If you want to talk to the LTA i have made a short step by step guide:
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   * lta name /home/damic/Pictures/LTA/   * lta name /home/damic/Pictures/LTA/
  
 +==== We never got data from the LTA error ====
 +
 +It is quite possible that after an image is taking that you get the //We never got data from the LTA
 +// which can be solved by using this commands:
 +  * sudo tcpdump -i enp7s0 -n udp and host 192.168.133.7 -c 20 -w lta_pkts.pcap
 +  * sudo tcpdump -r lta_pkts.pcap -n -vvv | head -n 40
  
 ==== Command protocoll ==== ==== Command protocoll ====
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 ==== Schematics ==== ==== Schematics ====
  
-^ Part Name            ^ Shematics  ^ +^ Part Name            ^ Shematics                                                                                                  ^ 
-| LTA DES                  |    {{ :readout:lta:des_vs_skipper.pdf |LTA v1 DES Schematics}}        | +| LTA DES Pinout       |  {{ :readout:lta:des_vs_skipper.pdf |LTA v1 DES Pinout Schematics}}                                               | 
-| Adapter Board v1 v2  |     {{ :readout:lta:ltav1_to_ltav2.pdf |Adapter v1 to v2}}       | +| LTA DES Complete     |         {{ :readout:lta:ccd_daq_v1_schematic.pdf |LTA v1 DES Schematics}}                                                                                                   | 
-| Front End Board      |       {{ :readout:lta:lta_frontend_board.pdf |Front End Board}}     | +| Adapter Board v1 v2  |  {{ :readout:lta:ltav1_to_ltav2.pdf |Adapter v1 to v2}}                                                    | 
-| Front End Board UZH  |     {{ :readout:lta:fe_ada4817_mk2_pcb.pdf |PCB File}}  {{ :readout:lta:fe_ada4817_mk2_sch.pdf |Schematics}}     |+| Front End Board      |  {{ :readout:lta:lta_frontend_board.pdf |Front End Board}}                                                 | 
 +| Front End Board UZH  |  {{ :readout:lta:fe_ada4817_mk2_pcb.pdf |PCB File}}  {{ :readout:lta:fe_ada4817_mk2_sch.pdf |Schematics}}  |
  
 ===== Pin Layout ===== ===== Pin Layout =====
low_threshold_acquisition_lta_board.1733233198.txt.gz · Last modified: by simon

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