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--- low_threshold_acquisition_lta_board [2024/11/13 12:12] – [Table] simon
+++ low_threshold_acquisition_lta_board [2025/10/26 13:12] (current) – [Image taking] simon
@@ Line 11: / Line 11: @@
 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 =====
 If you want to talk to the LTA i have made a short step by step guide:
@@ Line 38: / Line 42: @@
 to run the sequencer and take an image:
   * lta startseq
+to read out the image:
+  * lta read
 to change the default saving direcotry:
-  * lta set output_path /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 ====
@@ Line 89: / Line 101: @@
 ==== 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 =====
-There are two different Pin Layouts for two different Versions of the LTA, we use the DES Pinout.
+There are two different Pin Layouts for two different Versions of the LTA, we use the DES Pinout. The J10, J14, J22 and J23 are blocks on the LTA itself.
 ^ Pin  ^ Function DES PINOUT  ^ Function Skipper pinout  ^

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