This version (17 Oct 2013 14:13) was approved by JFitzger, Brandon.The Previously approved version (17 Oct 2013 04:03) is available.Diff

CN-0269 Software User Guide

Overview

CN-0269 is a high performance industrial signal level multi-channel data acquisition circuit that can process 16-channels of single-ended inputs or 8-channels of differential inputs with up to 18-bit resolution.

A single channel can be sampled at up to 1.33 MSPS with 18-bit resolution. A channel-to-channel switching rate of 250 kHz between all input channels provides 16-bit performance.

The signal processing circuit combined with a simple 4-bit up-down binary counter provides a simple and cost effective way to realize channel-to-channel switching without an FPGA, CPLD or high speed processor. The counter can be programmed to count up or count down for sequentially sampling multiple channels, or can be loaded with a fixed binary word for sampling a single channel.


Required Equipment

  • EVAL-SDP-CB1Z Evaluation Board (SDP-B Board)
  • EVAL-CN0269-SDPZ Daughter Board (CN0269 Board)
  • EVAL-CFTL-6V-PWRZ Power Supply or equivalent +6V power supply
    • (supplied with provided CD in kit)
  • PC with the following Minimum Requirements
    • Windows XP Service Pack 2 (32-bit)
    • USB type A Port
    • Processor rated at 1GHz or faster
    • 512 MB RAM and 500 MB available hard disk space
  • USB type A to USB type mini-B cable
  • Signal Generator for Sin Wave with +/-10V Vpp and frequency upto 500KHz

General Setup

Installing the Software

  1. Extract the file CN0269 SDP Eval Software.zip and open the file setup.exe.

    NOTE: It is recommended that you install the CN0269 SDP Evaluation Software to the default directory path C:\Program Files\Analog Devices\CN0269\ and all National Instruments products to C:\Program Files\National Instruments\







  2. Click Next to view the installation review page.



  3. Click Next to start the installation.



  4. Upon completion of the installation of the CN0269 SDP Eval Software, the installer for the ADI SDP Drivers will execute.

    NOTE: It is recommended that you close all other applications before clicking “Next”. This will make it possible to update relevant system files without having to reboot your computer.




  5. Press “Next” to set the installation location for the SDP Drivers.

    It is recommended that you install the drivers to the default directory path
    C:\Program Files\Analog Devices\SDP\Drivers




  6. Press “Next” to install the SDP Drivers and complete the installation of all software. Click “Finish” when done.



Connecting the Hardware

  1. Connect J1 of the EVAL-CN0269-SDPZ (CN0269 Board) to CON A of the EVAL-SDP-CB1Z (SDP-B Board)
  2. Set the JP3 and JP4 on EVAL-CN0269-SDPZ (CN0269 Board) to select the input range and Connect the signal correctly according to the pin definition.



  3. Connect the USB Cable to the SDP-B Board and leave the other side of the cable unconnected.
  4. Connect the 6V DC power to CN2 and +/-12V DC power to CN1 and Turn on the DC power supply to power up the board.
  5. Connect the USB Cable to PC




Using the Evaluation Software

Software Control and Indicator Descriptions

Software Overview


  1. Connect Button
    • When this button is pressed, the SDP-B Board makes a USB connection to the CN0272 Board. A connection to the SDP-B Board must be made to use the software.
  2. Start Acquisition Button
    • When this button is pressed, the SDP-B Board starts to acquire data from EVAL-CN0269-SDPZ Board.
  3. Save Data Button
    • When this button is pressed, the SDP-B Board save the data into the same directory where the application is installed.

      NOTE: If the CN0269 SDP Evaluation Software is installed in the default directory, the data files could be found in C:\Program files\Analog Devices\CN0269\.







  4. Control Tabs
    • Configuration Tab: All the configuration items through EVAL-SDP-CB1Z Board to EVAL-CN0269-SDPZ board are organized on this tab. More details about Configuration Tab will be introduced in the following Section.
    • Multi-Channel Tab: This tab shows all the signals on one tab which is convenient to compare the signals from different channels. More details about Multi-Channel Tab will be introduced in the following Section.
    • Single Channel Tab: This tab shows the specific channel which is more clearer than Multi-Channel Tab. More details about Single Channel Tab will be introduced in the following Section.
    • SDP Information: The Firmware version of EVAL-SDP-CB1Z Board is shown on this tab.
  5. Configuration Items
  6. Hardware Configuration Diagram
    • This picture block shows the way of hardware configuration in terms of jumper setting and signal connection according to the current configuration.
  7. System Status String Indicator
    • This indicator displays a message to the user detailing the current state of the software.
  8. System Status LED Indicator
    • This indicator displays the current state of the software in the form of an LED. There are four status LED colors.
      busy.
      error.
      inactive.

Configuration Tab

  • Configuration Items
    • Connector Dropdown Menu
      • This control will select which connector (on the SDP-B Board) the CN0269 Board is currently connected to.
      • The options are “Connector A” or “Connector B”. The connector to be used must be selected before clicking the Connect Button.
    • Signal Range Dropdown Menu
      • This control will select acceptable input range of EVAL-CN0269-SDPZ board. After selecting the input range, customer need to make the hardware configuration according the way shown in the Hardware Configuration Diagram.
      • The options are -10V to +10V or -5V to +5V.
    • Signal Type Dropdown Menu
      • 8 Channels, Differential: When this option is selected, EVAL-CN0269-SDPZ board could acquire 8-channel differential signals. Pay attention the signal definition under this configuration is different with 16-channel single-ended inputs.
      • 16 Channels, Single-Ended: When this option is selected, EVAL-CN0269-SDPZ board could acquire 16-channel single-ended signals. Pay attention the signal definition under this configuration is different with 8-channel differential inputs.
    • Acquisition Mode Dropdown Menu
      • Single Channel: When this mode is selected, the Evaluation Software would control EVAL-SDP-CB1Z Board to collect data from specific channel customer selected. The acquisition rate under Single Channel Mode could be up to 1MHz SPS.
      • All Channel Scan: When this mode is selected, the Evaluation Software would control EVAL-SDP-CB1Z Board to collect data from all the channels.(8 Channels for differential input signal and 16 channels for single-ended input signal).
    • Select the Channel Dropdown Menu
      • This control is shown on the configuration tab only when the Acquisition Mode is “Single Channel”.
      • Customer could select anyone channel for acquisition.
    • Scan Sequence Dropdown Menu
      • This control is shown on the configuration tab only when the Acquisition Mode is “All Channel Scan”.
      • Customer could select the sequence of scan between “CH0~CH15”(“CH0~CH7”) or “CH15~CH0”(“CH7~CH0”).
    • Sample Rate/CH(Hz)
      • This control allows customer to configuration the sampling rate per channel.
      • The total sample rate is the [Sample Rate/CH(Hz)] X [active channel]. The total sampling rate can't exceed the 1MHz SPS.
    • Samples/CH
      • This control allows customer to set number of samples for each channel.
      • The total samples is the [Samples/CH] X [active channel]. The total samples can't exceed 1M.
    • Capture Mode Dropdown Menu
      • Single Capture: When this option is selected, the Evaluation Software will stop after collecting the number of samples configured in Samples/CH.
      • Continuous Capture: When this option is selected, the Evaluation Software never stop collecting data only when “Stop Acquisition Button” is clicked.
    • Phase Compensation Dropdown Menu: This function is used to compensate the delay between differential channels due to the acquisition delay.
  • Hardware Configuration block
    • The picture in this block shows the correct way of hardware configuration in terms of Jumper Setting and Signal Definition according to the current configuration.

Multi-Channel Tab


  1. Multi-Channel Graph
    • Shown all the signal plot on this picture box in time domain.
  2. Channel Index
    • Shows the number and color of all the active channels.
  3. Graph Controls
    • These controls allow the user to zoom-in, zoom-out, and pan through the Snapshot displayed.
  4. X,Y Scale Fit Setting
    • Autoscale: The Multi-Channel Graph scales the X(Y)axis in every snapshot to display the plots from all the channels.
    • Autoscale Once: The Multi-Channel Graph scales the X(Y)axis once just for the previous snapshot.
    • Do not Autoscale: The Multi-Channel Graph never scales the X(Y)axis.
  5. Display Format
    • RAW Data: The original binary data was shown on the Multi-Channel Graph
    • Voltage(V): The software convert the binary data to real voltage information and shows on the Multi-Channel Graph

Single Channel Tab


  1. Time Domain Sub Tab
    • This Sub Tab shows the signal from selected channel in time domain.
  2. Frequency Domain
    • This Sub Tab shows the FFT plot of the signal from selected channel in frequency domain.
  3. Histogram
    • This Sub Tab shows the distribution status in time domain for the selected channel.
  4. Dynamic Performance Analysis
    • SNR: Usually, the SNR is the ratio of the rms value of the actual input signal to the rms sum of all other spectral components below the Nyquist frequency, excluding harmonics and dc. The value for SNR is expressed in decibels. (Here the SNR in CN0269 Evaluation Software is used to characterize the dynamic performance of ADC given the input signal covering all the dynamic range of it. So, the amplitude of fundamental frequency is equal to 1).
    • SINAD: Signal-to-Noise-and-Distortion Ratio.
    • SFDR: Spurious Free Dynamic Range.
    • THD: Total Harmonic Distortion.
    • Sin/N: The “SNR” to the actual input signal. the ratio of the rms value of the actual input signal to the rms sum of all other spectral components below the Nyquist frequency, excluding harmonics and dc.
    • Fund ampl: Fundamental Frequency Amplitude.
  1. Follow the instructions to properly install the software and connect the hardware as described in the previous sections.
  2. Open the file named CN0269.exe in the installation directory.

    NOTE: If the software was installed to the default location it will be found at
    C:\Program Files\Analog Devices\CN0269\CN0269.exe







  3. Select the connector to use from the SDP Connector Dropdown Menu.
  4. Click the Connect to SDP-B Board Button. A window with a progress bar will load.



  5. Upon success, the System Status String Indicator will display SDP-B Ready to Acquire Data(s)

Making a Single Capture

  1. Establish a USB Connection Link.
  2. Select Single Capture as the Capture Mode
  3. Set the sample frequency as the “Sample Rate/CH(Hz)”
  4. Set the number of samples in the “Samples/CH”
  5. Click the Single Capture

Making Continuous Capture

  1. Establish a USB Connection Link.
  2. Select Continuous Capture as the Capture Mode
  3. Set the sample frequency as the “Sample Rate/CH(Hz)”
  4. Set the number of samples in the “Samples/CH”
  5. Click the Start Acquisition.
resources/eval/user-guides/circuits-from-the-lab/cn0269.txt · Last modified: 17 Oct 2013 14:13 by JFitzger