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|02-12-2009|Work on the FmcAdc100M14b4ch_a is suspended, because estimated performance wasn't reached.|
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|18-12-2009|Specification and schematic of new version has been added.|
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|22-01-2010|FmcAdc100M14b4cha upgrade. Design revised and modified, better parameters expected.|
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|10-02-2010|New design made with 3 input ranges and programmable offset.
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Need to finalise local clock circuit before PCB layout can start.|
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|10-02-2010|New design made with 3 input ranges and programmable offset. Need to finalise local clock circuit before PCB layout can start.|
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|24-02-2010|Draft PCB layout done. Design document being written. Design review planned for 2 March.|
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|02-03-2010|Design review of schematics done. [fmc-adc-100m14b4cha-hw:V1Review](https://www.ohwr.org/project/fmc-adc-100m14b4cha-hw/wikis)|
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|04-03-2010|Improvements made, responding to design review. [fmc-adc-100m14b4cha-hw:V1ReviewImprov](https://www.ohwr.org/project/fmc-adc-100m14b4cha-hw/wikis)|
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|19-03-2010|PCB review planned for 24 March 2010.|
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|24-03-2010|Design review of PCB layout done. [fmc-adc-100m14b4cha-hw:V1LayoutReview](https://www.ohwr.org/project/fmc-adc-100m14b4cha-hw/wikis)|
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|25-03-2010|Small changes involved to the schematic (to make routing easier),
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PCB partially updated.|
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|25-03-2010|Small changes involved to the schematic (to make routing easier), PCB partially updated.|
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|29-03-2010|PCB updated. Waiting for Design Office's review.|
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|06-04-2010|12 PCBs ordered. 3 will be mounted for prototyping.|
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|12-04-2010|For availability reasons two resistor values need to be modified (120121, 510>511). See issues.|
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... | ... | @@ -28,17 +26,13 @@ PCB partially updated.| |
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|12-07-2010|One board plugged in on Xilinx development kit and powered. Debugging start.|
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|13-07-2010|Two channels working! Limited by Xilinx development kit clock connections.|
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|30-07-2010|Current consumption has been measured, document is now available on the wiki.|
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|30-07-2010|Changes for the second version of the PCB documented, mainly to solve thermal problems with regulators.
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Required change of DC/DC converter and inductor.|
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|30-07-2010|Changes for the second version of the PCB documented, mainly to solve thermal problems with regulators. Required change of DC/DC converter and inductor.|
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|30-07-2010|ENOB & SNR measured: >11 bits in all ranges.|
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|03-08-2010|First harmonic distortion measurements made. Needs further investigation as with -60dB is higher than expected.|
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|03-09-2010|The distortion source has been found.
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For further information go to [Investigating the distortion source...](https://www.ohwr.org/project/fmc-adc-100m14b4cha-hw/wikis)|
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|03-09-2010|The distortion source has been found. For further information go to [Investigating the distortion source...](https://www.ohwr.org/project/fmc-adc-100m14b4cha-hw/wikis)|
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|03-09-2010|[Thermal stability measurements](https://www.ohwr.org/project/fmc-adc-100m14b4cha-hw/wikis) made.|
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|03-09-2010|Frequency response of the anti-aliasing filter will be verified and possibly corrected.
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Needs development of software that shows frequency response.|
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|07-09-2010|Both I2C buses are working. Accessing memory, setting the sampling frequency and
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making temperature measurements are now possible.|
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|03-09-2010|Frequency response of the anti-aliasing filter will be verified and possibly corrected. Needs development of software that shows frequency response.|
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|07-09-2010|Both I2C buses are working. Accessing memory, setting the sampling frequency and making temperature measurements are now possible.|
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|08-09-2010|Issue with linearity in the 30-90 kHz region caused by offset compensation circuit being investigated.|
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|20-09-2010|The schematic has been updated. All the differences for the second version are given here :[PDF](https://www.ohwr.org/project/fmc-adc-100m14b4cha/uploads/708190067665268ac6ef5356ea116860/FmcAdc100m14b4cha_v1_changes.pdf)|
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|29-09-2010|Updates to PCB made (EDA-02063-V2). Ten boards ordered. Designer left CERN.|
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|08-12-2010|Production of ten boards of V2 will arrive before 17 December. Update 16-12-2010: will become 7 January.|
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|07-01-2011|Ten V2 boards arrived.|
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|23-02-2011|First board powered up on a SPEC carrier, no smoke!|
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|03-03-2011|Trial of wave soldering of LEMO connector instead of SMC looks OK.
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PCB redesign needed if want to use wave soldering.|
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|03-03-2011|Trial of wave soldering of LEMO connector instead of SMC looks OK. PCB redesign needed if want to use wave soldering.|
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|08-03-2011|Basic HDL code written (single shot, no time stamps). Needs testing.|
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|28-03-2011|Basic HDL code tested. We're able to DMA raw adc data from DDR3 memory to the host and gnuplot them.|
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|21-06-2011|Made schematics and layout modifications for V3 (see [[fmc-adc-100m14b4cha-hw:V3ChangeLog|
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