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resources:fpga:altera:ced1z:ad7689 [05 Nov 2012 21:20] – [Software Tools] Andrei Cozmaresources:fpga:altera:ced1z:ad7689 [03 Jan 2013 20:42] – external edit
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   * 6. After the programming ends, power off the CED1Z and reprogramm it using program_fpga.bat as described above.   * 6. After the programming ends, power off the CED1Z and reprogramm it using program_fpga.bat as described above.
  
-<note> This is a one time operation, as the programming is done on a non volatile memory on the Evaluation Board. In order to restore the original firmware on the Evaluation Board, at step 4 use the configuration file from the CD at Evaluation Board FPGA code/uMUX FPGA CED 2-2/toplevel.pof.</note>+<WRAP round help> This is a one time operation, as the programming is done on a non volatile memory on the Evaluation Board. In order to restore the original firmware on the Evaluation Board, at step 4 use the configuration file from the CD at Evaluation Board FPGA code/uMUX FPGA CED 2-2/toplevel.pof.</WRAP>
  
 In order to acquire data, follow the instructions in the //**Evaluation Project Data Acquisition**// section. In order to acquire data, follow the instructions in the //**Evaluation Project Data Acquisition**// section.
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   *  3. data_capture8chan.bat, captures data from up to 8 channels, referenced to GND. By editting the data_capture8chan.tcl, the number of channels that are to be acquired can be changed.  The resulting data is stored in Acquisition.csv. The sample rate is 250 KSPS divided by the number of acquired channels.   *  3. data_capture8chan.bat, captures data from up to 8 channels, referenced to GND. By editting the data_capture8chan.tcl, the number of channels that are to be acquired can be changed.  The resulting data is stored in Acquisition.csv. The sample rate is 250 KSPS divided by the number of acquired channels.
  
-<note>When changing between the data capture scripts the system must be reinitialized by reprogramming the FPGA.</note>+<WRAP round help>When changing between the data capture scripts the system must be reinitialized by reprogramming the FPGA.</WRAP>
  
 If the resulting csv file is opened with Microsoft Excel, the data will be displayed on a single column for the first script or on 8 columns for the second and third scripts. Each column represents a channel. If the AD7689 is configured to acquire less than 8 channels the remaining channels will have a constant value. For example, in the below picture, the AD7689 was configure to acquire data on 4 differential channels, a sine signal was applied on the first channel and the rest were left floating. In this case, the first column can be plotted as a sine wave, the next 3 have some noise on them, and the last 4 have a constant value of 0. If the resulting csv file is opened with Microsoft Excel, the data will be displayed on a single column for the first script or on 8 columns for the second and third scripts. Each column represents a channel. If the AD7689 is configured to acquire less than 8 channels the remaining channels will have a constant value. For example, in the below picture, the AD7689 was configure to acquire data on 4 differential channels, a sine signal was applied on the first channel and the rest were left floating. In this case, the first column can be plotted as a sine wave, the next 3 have some noise on them, and the last 4 have a constant value of 0.
resources/fpga/altera/ced1z/ad7689.txt · Last modified: 26 Jan 2021 01:23 by Robin Getz

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