Fausto

Hello @Rob Clements. What is the Data Translation package version in DASYLab 2016's Configurator? Please create a new DASYLab worksheet with a Data Translation Analog Input module and a Digital Meter display module. In DT AIN module, select the attached DT9816 and reply with a screen capture of the configuration. Close the module and connect the default channel between the two modules on the worksheet. Save the worksheet and run it. If it does not run, then reply with a screen capture of the entire worksheet and any errors. Be sure to capture all displays on the screen. If the worksheet runs, then close DASYLab. Launch DASYLab and load the worksheet. Are you able to run the worksheet without an error? Reply with full screen capture. How many DT9816 modules are connected to that target system? Is the target system managed by an IT Administrator? If so, does your Windows user login account have admin privileges? Does the target system have the following DT9816 folder and files? Regards, Fausto

Hello @komondor. Yes, the MCC 128 is compatible with the RPi 4. Use the 'rpi5' branch to install on the RPi 4 module. Regards, Fausto

Hello @Domme. Please confirm that your target system is using a previous version (v7.8.2) of DT Open Layers library for the DT9857E. Disconnect your microphones and loop the analog output directly to the five analog input channels. Please test and reply with screen capture(s) and comments. Regards, Fausto

Hello @Francky. The MCC 134 Electrical Specifications mentions a 15 minute warm-up time. Please verify the three CJC sensors are not damaged. You initially reported the following CJC temperatures. Have readings varied significantly? CJC 26.7397420913332 26.367750118973106 25.348451403433273 24.073498502352948 Please retest the MCC 134 boards without the mini thermocouple connectors; direct connection to the screw terminals. https://digilent.com/reference/daq-and-datalogging/documents/measuring-thermocouples-with-raspberry-pi Regards, Fausto

Hello @komondor. What changed from the time the MCC 128 boards did work? Using a Raspberry 5 model with one MCC 128 board installed, remove the address jumper and then uninstall the MCC DAQHATS library using the steps below via a terminal. Afterward install the MCC daqhats software branch (beta version 1.5.0.0) for RPi 5 modules. https://github.com/mccdaq/daqhats/tree/pi5 1. $ cd daqhats 2. $ sudo ./uninstall.sh 3. $ git pull 4. $ git checkout pi5 5. $ sudo ./install.sh 6. $ pip install daqhats (manually add Python support) You can switch back to the released library by uninstalling the library, running “git checkout master”, and then installing the library. Use the installed MCC DAQ HAT Manager utility application to verify communication with the MCC 128 or terminal commands. $ sudo daqhats_read_eeproms $ daqhats_list_boards Does the MCC 128 work? If the board is not detected, then power off the RPi and swap out the MCC 128 board. Is the second board detected by the MCC DAQ HAT Manager utility application or terminal commands? Reply with screen captures and images of your hardware if the issue is not resolved. Regards, Fausto

Hello @Francky. Thank you for the reply and image. When you test the thermocouples with the multimeter, do you disconnect the thermocouple at the MCC 134 screw terminal or the mini thermocouple connectors? If you disconnect the thermocouple at the connector, then the wire section from the opposite mini connector to the MCC 134 screw terminal is an unknown. Please relocate the MCC 134 to be on top (2nd board), connect K-type thermocouples directly to the MCC 134 screw terminal, and then retest. Regards, Fausto

Hello @Francky. The MCC DAQ HATS are calibrated at the factory. The coefficients are as they leave the factory. Did you read the MCC 134 calibration coefficients from the factory? Did you modify the calibration coefficients? Are the thermocouple tips in contact with a metallic surface? If they are, then use an epoxy or thin film on the ends. Are all four K-type thermocouples together or in different locations? Please describe the testing application, materials, and environment. (Images are always helpful.) Are you using an active cooler on the RPi5? What are the temperature values from the MCC DAQ HAT Manager utility application? Do you see a difference if you test your code with a one second time interval? Are there any pumps or motors near the RPi and/or thermocouples? Regards, Fausto

Hello @BricanUK. You can use DAQami to display the captured data from the MCC USB-1608GX module. DAQami has a scaling option (multiplier and offset) but cannot perform complicated math functions nor does DAQami support any third party application integration. Data processing is done post acquisition, not live, using the .CSV or .TDMS data files. DAQami Help DAQami videos: Alternative options would be DASYLab, LabVIEW or custom MCC Universal Library programming. Regards, Fausto

Hello. Use a voltage follower op amp configuration to change your high impedance signal to low impedance.

Hello @David Calatayud. Firmware updates for MCC devices are done on a Windows system with MCC's InstaCal utility software. Please connect your USB-1208HS-4AO module to a Windows system and launch InstaCal. Once in InstaCal, the device should appear in the list. Double-click on the device to open the Configuration window which shows the firmware version and serial number. Please reply with a screen capture of that window. After updating the firmware, connect the USB-1208HS-4AO module to your Linux system and retest the example. MCC supported devices with UL for Linux Regards, Fausto

Hello @MCOATS1. Instead of searching for capacitor,... Click on the resistor icon in the component toolbar to view the Capacitor component. Does that help? Regards, Fausto

MCC UL Help

Hello @jesusvaquerizo. If you intend to use the analog output channel, then you will need to install a previous version of the DT-Open Layers (v7.8.2) library and drivers. Please reference the following post for instructions. After installing the Data Acquisition Support Package for Data Translation Hardware via MATLAB's Add-On Manager, you will find examples saved to the host system in the directory: C:\Users\{username}\AppData\Roaming\MathWorks\MATLAB Add-Ons\Toolboxes\Data Acquisition Toolbox Support Package for Data Translation Hardware\examples The dt_background_Streaming_AI_AO.m is a general example using the analog input and analog output channels. Data Translation Daq Adaptor for MATLAB user manual Regards, Fausto

Hello @clement-AA. DAQami saves all data points captured to a .TDMS file. Please reference the DAQami Help and click on the Search button to find tdms. https://files.digilent.com/manuals/DAQami_WebHelp/DAQami-start.htm Regards, Fausto

Hello @QiwenSheng. Thank you for your responses and confirming the USB-1608GX-2AO device is working. If the Thorlabs photodetector is connected to CH1, what's connected to CH0? Please elaborate what you are doing when you "switch to the photodetector". Is there a physical inline switch? Are you acquiring data from two different sources to CH0 and CH1? The photodetector's manual indicates a high impedance output signal from the photodector. MCC daq devices were designed to work with low impedance signal sources, 100 Ohm or less. Use an op amp configuration to convert your high impedance signal to low impedance. If you confirmed that the output signal has a low impedance, then have you tried connecting the output signals to the USB-1608GX-2AO analog input channels in differential mode, as shown in Figure 6 of the user manual? Recommend adding the reference resistor between the low channel (CH#L) and the ground (AGND) terminals. Regards, Fausto

Yes, please.

Hello @Seweee. Which OS and MCC software releases are you using? Regards, Fausto

Hello @QiwenSheng. Thanks for your response. From your original post, which channel is the blue data line and which is the red data line? The blue data line appears to be correct. Would you agree? How was the 'Original data' created? Did you use this USB-1608GX-2AO device or a different device? Please provide a schematic of your wire connections, include your signal source(s). Also, please provide screen captures of each channel setting in DAQami. Lastly, disconnect your existing wires and connect the +5V terminal to the CH0 and CH1 terminals. Launch DAQami and set these channels to single-ended and a sampling rate of 20 kHz. Is the data shown for both channels at the +5V level or not? If not, please reply with a screen capture. Regards, Fausto

Hello @Osiris. Which Raspberry Pi OS are you using? Try the beta version by performing the following commands: 1. $ cd daqhats 2. $ sudo ./uninstall.sh 3. $ git pull 4. $ git checkout pi5 5. $ sudo ./install.sh 6. $ pip install daqhats You can switch back to the released library by uninstalling the library, running “git checkout master”, and then installing the library. Regards, Fausto

Hello @jesusvaquerizo. Please provide additional information about your application. How do you intend to use the DT9847? What features of the DT9847 (i.e. analog input, analog output, digital I/O) will you use? What types of signals will be connected to the DT9847? Is MATLAB your preferred choice of a development application or are you open to other software applications? The DT9847 is supported in MATLAB via MATLAB's Data Acquisition Toolbox and the Data Acquisition Support Package for Data Translation Hardware. Regards, Fausto

Hello @Pietro89. Please provide a datasheet of your linear encoder. Also, which software application are you using? Please provide your code if using a custom program. Regards, Fausto

Hello @TFisherIRA. After installing the MCC DAQ software, reference the legacy Visual Basic 6.0 examples in the C:\Users\Public\Documents\Measurement Computing\DAQ\VBWIN directory. Additional VB6 examples: https://files.digilent.com/#downloads/example_programs/Universal_Library_Apps_and_App_Notes/VB6/ Regards, Fausto

Hello @vick. The sampling rate of the MCC 134 is 1 S/sec per channel. The result stems from the components and design. There are no plans to change the design to increase the sampling rate. For sampling rates up to 60 Hz, consider the MCC USB-2408 for supported MCC hardware with Linux and MCC hardware with Windows. (The MCC USB-2408 can sample at a faster rate. However, since thermocouples are susceptible to pick up noise from the surrounding environment, a data rate based on the primary noise frequency is recommended. For example, to reduce the effect of 60 Hz noise, select a data rate of 60 (or a supported submultiple of 60, such as 10 or 5).) Regards, Fausto

Hello @jesusvaquerizo. Data Translation/MCC/Digilent devices are not supported in MATLAB's Analog Input Recorder toolbox app. Regards, Fausto

Hello @arang. The maximum sample output rate is 1 S/s per channel and it is the inverse of the update interval. MCC 134 electrical specs: https://mccdaq.github.io/daqhats/_static/esmcc134.pdf Regards, Fausto