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    The DAQ software helps to diagnose hardware with complete I/O drivers. It also includes DAQ SDK and DAQ utility application software to control specific hardware interface.

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The DAQ software helps to diagnose hardware with complete I/O drivers. It also includes DAQ SDK and DAQ utility application software to control specific hardware interface.

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Advantech's DAQNavi/SDK Software Development Kit

Software development kit for application development with APIs to help configure and control DAQ devices.The SDK also provides supporting documents and utilities for testing.

Reliable Multi-Thread Programming

    DAQNavi’s thread-safe programming technology prevents problems occurring in multi-thread programming like system crashes or data errors.

LabVIEW Programming Support

    LabVIEW lets programmers visually build DAQapplications with DAQNavi Assistant and PolymorphicVI using a simple graphical programming approach.

Easy-to-Use Utility

    DAQNavi provides Advantech Navigator, an integrated utilitywhere programmers can perform hardware configuration andfunctionality testing without programming. 

Latest Operating System Support

    DAQNavi adheres to the latest Windows (32-bit and64-bit) and Linux operating system requirements. Inaddition, DAQNavi software design helps programmerseasily migrate their DAQ applications between OS,without spending lots of time solving compatibility issues.

Supports Multiple Programming Languagess

    For DAQ application development, DAQNavi supportsmultiple popular programming languages including C/C++,Visual Basic, C#, VB.NET, Python, Delphi, Qt, Borland C++Builder (BCB), Java, MATLAB and LabVIEW.

Component-based Programming

    The API style follows the hardware design with methods,properties and events for each function. DAQNavi API isdesigned for programmers to shorten development time.
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National Instruments Multifunction DAQ example¶

This was written for/tested with National Instruments USB-6363 DAQ, but the nidaqmx API is pretty general, so I expect it will work with other devices with minimal changes. The driver currently only supports analog inputs and outputs, no digital I/O.

importnidaqmxfromqcodes_contrib_drivers.drivers.NationalInstruments.DAQimportDAQAnalogInputs,DAQAnalogOutputs

Acquire 1 million points simultaneously on with a sample rate of 1 MHz, averaging the acquired data down to 100 thousand points.

devname='Dev0'# can be found with NI-MAXsample_rate_per_channel=1e6# Hznum_ai_channels=5ai_channels={'meas{}'.format(i):iforiinrange(num_ai_channels)}num_samples_raw=1e6num_samples_averaged=1e5
withnidaqmx.Task('ai_task')asai_task:daq_ai=DAQAnalogInputs('daq_ai',devname,sample_rate_per_channel,ai_channels,ai_task,samples_to_read=num_samples_raw,target_points=num_samples_averaged,)ai_task.start()result=daq_ai.voltage()# result.shape == (num_ai_channels, num_samples_averaged)ai_task.wait_until_done()ai_task.stop()

For an example of synchronously writing and acquiring data on many channels, see the docs <https://scanning-squid.readthedocs.io/en/latest/>`__, in particular <https://scanning-squid.readthedocs.io/en/latest/_modules/microscope/susceptometer.html#SusceptometerMicroscope.scan_surface>`__ and <https://scanning-squid.readthedocs.io/en/latest/_modules/scanner.html#Scanner.scan_line>`__.

functions as a simple multichannel DC DAC.

devname='Dev0'# can be found with NI-MAXao_channels={str(i):iforiinrange(5)}daq_ao=DAQAnalogOutputs('daq_ao',devname,ao_channels)daq_ao.voltage_0(5)daq_ao.voltage_4(2.2)
Sours: https://qcodes.github.io/Qcodes_contrib_drivers/examples/NationalInstruments_DAQ.html
Data Acquisition with NI myDAQ: DAQ Assistant

The most common problem regarding the installation of USB devices

Notice

If you have any trouble with the following instructions, please send an email to [email protected] for further assistance.

Problem

When you run WinDaq USB, it comes back with the error message: "Could not open data acquisition device." Accessing your Windows Device Manager further reveals that with the DI-700 or 720/730/740-USB connected to a USB port of your PC, you cannot find the device listed. If the device is connected (and turned on for a 720/730/740-USB), it is probably listed under "Other devices" as "USB Device."

Common Cause

When a DI-7xx-USB is connected to your PC for the first time, Windows will detect it and ask for a device driver. (Under Windows 2000, you must be logged in as Administrator or have sufficient privileges to install device drivers.) If Windows cannot find a driver for the device and the user clicks the default button "Finish" or clicks on "Disable the device," the Windows Device Manager puts "USB Device" under "Other devices" and Windows will never prompt you again to install the driver. When installing in Windows XP, Microsoft issues a warning that the software "has not passed Windows Logo Testing to verify its compatibility with Windows XP." If the user stops Installation here, the Windows Device Manager puts "USB Device" under "Universal Serial Bus Controllers."

Without the proper driver, WinDaq will not run.

Solution

Insert the WinDaq Resource CD-ROM. If it auto-starts, click Exit. Then follow the appropriate directions for your operating system below.

Under Windows 98 or Windows ME

  1. Go to the Control Panel (Start>Settings>Control Panel) and open "Add New Hardware." The open window will instruct you to close any open programs. Do this and then click Next.
  2. Click Next again to have Windows search for any new Plug and Play devices on your system.
  3. Click on "Select USB Device" and click Next.
  4. Windows will report that the device has already been installed, but it has a problem. To view properties for the device and to see the problem and proposed solution, click Finish.
  5. Device status will show: "The drivers for this device are not installed. (Code 28)." To reinstall the drivers for this device, click "Reinstall Driver."
  6. When the Update Device Driver Wizard starts, click Next.
  7. Select "Search for a better driver than the one your device is using now. (Recommended)" and click Next.
  8. Under Windows 98, check the "CD-ROM drive" box and click Next.
  9. With di700.inf or di720.inf selected in the root directory of the CD-ROM drive, click Next or OK.
  10. After the wizard copies the files and builds a driver information database, click "Finish" for Windows 98 or "OK" for Windows ME. The DI-7x0 USB ADC Module Properties should be displayed. You can now close the wizard and close the Control Panel.
  11. Access the "Windaq" programs menu and open "WinDaq[7xx] USB0" to confirm that the device has been successfully installed. Always exit the application before disconnecting or turning off the device.

Under Windows 2000

  1. Go to the Control Panel (Start>Settings>Control Panel) and open "Add New Hardware." When this window opens, click Next.
  2. Select "Add/Troubleshoot a Device" and click Next.
  3. Windows searches for new Plug and Play hardware to install. Select "USB Device" and click Next.
  4. Device status will show: "The drivers for this device are not installed. (Code 28)." To start the troubleshooter that will resolve your problems click Finish.
  5. The "Welcome to the Upgrade Device Driver Wizard" will open. To continue click Next.
  6. Select "Search for a suitable driver for my device (recommended)" and click Next.
  7. Under "Optional Search Locations" check the "CD-ROM drives" box and click Next.
  8. After it finds di700.inf or di720.inf on the CD-ROM drive, click Next.
  9. After it copies the files, you can close the wizard (by clicking Finish) and close the Control Panel.
  10. Access the "Windaq" programs menu and open "WinDaq[7xx] USB0" to confirm that the device has been successfully installed. Always exit the application before disconnecting or turning off the device. Windows 2000 recommends that before disconnecting the device or turning it off, you double click the device ejection icon on the taskbar (with an arrow near the clock) and stop it.

Under WindowsXP

  1. Go to the Control Panel (Start>Control Panel).
  2. Go to Add Hardware (with a Category View Control Panel, Click, "Printers and Other Hardware" then under "See Also," click "Add Hardware." With a Classic View Control Panel just click "Add Hardware").
  3. When the Add Hardware Wizard opens, click Next.
  4. When it asks, "Have you already connected this hardware to your computer?" select, "Yes, I have already connected the hardware." and click Next.
  5. Click on "USB Device." The current status of the hardware you selected will be "The drivers for this device are not installed (Code 28)." To start the troubleshooter that will resolve your problems click Finish.
  6. When the wizard comes up click Next to continue.
  7. In the Hardware Installation box, Microsoft issues a warning that the software "has not passed Windows Logo testing to verify its compatibility with Windows XP." Ignore this and click "Continue Anyway."
  8. After it copies the files, you can close the wizard (by clicking Finish) and close the Control Panel (or the "Printers and Other Hardware" box).
  9. Use Windows Explorer to check that the date on \WINDOWS\SYSTEM32\DRIVERS\DI700.sys or DI720.sys is 6-12-06 or later. If it is, please proceed to step 10. If it is not, go to the WinDaq Acquisition Upgrade Center and download the updated driver for your device. For the DI-700, click Group 3. For the DI-720/730/740, click Group 1, then "USB." Click "Download device driver only," save the file to disk, and unzip DI700.ZIP or DI720.ZIP to a floppy. In the Device Manager, right click on the device and select "Update Driver...," remove the CD-ROM, insert the floppy, and click Next. In the "Files Needed" box, for "Copy Files From:", type "A:\".
  10. Access the "Windaq" programs menu and open "WinDaq[7xx] USB0" to confirm that the device has been successfully installed. Always exit the application before disconnecting or turning off the device.
Sours: https://www.dataq.com/resources/techinfo/usb.htm

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Troubleshooting Tips

Find Devices and Create a DataAcquisition Interface

Identify the devices you can access:

dev = 9×5 table VendorID DeviceID Description Model DeviceInfo _____________ ___________ ____________________________________________________ ________________________________________ ____________________ "ni" "Dev1" "National Instruments(TM) USB-6211" "USB-6211" [1×1 daq.DeviceInfo] "ni" "Dev2" "National Instruments(TM) USB-6218" "USB-6218" [1×1 daq.DeviceInfo] "ni" "Dev3" "National Instruments(TM) USB-6255" "USB-6255" [1×1 daq.DeviceInfo] "ni" "Dev4" "National Instruments(TM) USB-6509" "USB-6509" [1×1 daq.DeviceInfo] "ni" "PXI1Slot2" "National Instruments(TM) PXIe-6341" "PXIe-6341" [1×1 daq.DeviceInfo] "directsound" "Audio0" "DirectSound Primary Sound Capture Driver" "Primary Sound Capture Driver" [1×1 daq.DeviceInfo] "directsound" "Audio1" "DirectSound Headset Microphone (Plantronics BT600)" "Headset Microphone (Plantronics BT600)" [1×1 daq.DeviceInfo] "directsound" "Audio2" "DirectSound Primary Sound Driver" "Primary Sound Driver" [1×1 daq.DeviceInfo] "directsound" "Audio3" "DirectSound Headset Earphone (Plantronics BT600)" "Headset Earphone (Plantronics BT600)" [1×1 daq.DeviceInfo]

Create a DataAcquisition object for a specific vendor:

For more information on the DataAcquisition interface, see The DataAcquisition Object.

To learn more about how to communicate with CompactDAQ devices, see Interface Workflow.

Is My Device Driver Supported?

For the supported device drivers for each vendor, see Hardware Support from Data Acquisition Toolbox, and click the link for your vendor. To see your installed driver version, in MATLAB type:

v = 5×4 table ID FullName AdaptorVersion DriverVersion _____________ ____________________________ ______________ _________________ "ni" {'National Instruments(TM)'} "4.1 (R2020a)" "18.5.0 NI-DAQmx" "adi" {'Analog Devices Inc.' } "4.1 (R2020a)" "1.0" "directsound" {'DirectSound' } "4.1 (R2020a)" "n/a" "digilent" {'Digilent Inc.' } "4.1 (R2020a)" "3.7.20" "mcc" {'Not Operational' } "4.1 (R2020a)" "unknown"

If the field does not match the minimum requirements specified on the product page on the MathWorks® website, use the Add-On Manager to update your support package.

If your driver is incompatible with Data Acquisition Toolbox™, verify that your hardware is functioning properly before updating drivers. If your hardware is not functioning properly, you might be using unsupported drivers.

  • NI-DAQmx Drivers

    Data Acquisition Toolbox software is compatible with only specific versions of the NI-DAQmx driver, and is not guaranteed to work with other versions. For a list of the NI-DAQmx driver versions that are compatible with Data Acquisition Toolbox software, see NI-DAQmx Support from Data Acquisition Toolbox.

    For the latest NI-DAQmx drivers, visit the NI® website at .

    To find your installed driver version in the NI Measurement & Automation Explorer use these steps:

    1. In the Windows® taskbar, click > .

    2. In the Measurement & Automation Explorer select > .

  • Measurement Computing™ (MCC) Drivers

    For a list of the MCC driver versions that are compatible with Data Acquisition Toolbox software, see Measurement Computing DAQ Support from Data Acquisition Toolbox.

Cannot Find Hardware Vendor

If you try to get vendor information using , and receive one of the following errors:

  • No vendors found:

    No data acquisition vendors available.

    Reinstall Data Acquisition Toolbox software and applicable support packages.

  • Corrupted or missing toolbox components:

    Diagnostic Information from vendor: NI: The required MEX file to communicate with National Instruments hardware is not in the expected location.

    Reinstall Data Acquisition Toolbox software and applicable support packages.

    Diagnostic Information from vendor: NI: The required MEX file to communicate with National Instruments hardware exists but appears to be corrupt.

    Reinstall Data Acquisition Toolbox software and applicable support packages.

  • The MCC entry indicates :

    There are various reasons that the adaptor can appear as related to MCC installation issues. Click the text link to get its error code. When you have the error code, see specific troubleshooting steps at Why Does the MCC Data Acquisition Adaptor Show as 'Not Operational'?

Cannot Detect My Device

If you try to find information using and do not see the expected device listed, refresh the toolbox and get a new device listing with the commands:

If you still do not see the expected devices, try the following.

  • Make sure that your system is properly set up as described in Set up Your System for Device Detection.

  • NI Devices

    • Go to the NI Measurement & Automation Explorer (NI MAX) and examine your devices to make sure your device is listed as available.

    • If you cannot see your device in NI MAX, check all device connections and power sources.

    • If you can see your device in NI MAX, run and in MATLAB again.

    • If you are using an Ethernet or WiFi network CompactDAQ chassis or FieldDAQ device, reserve the chassis or device in NI MAX first. Only one system can reserve a network device at any one time. For more information, see Why can't Data Acquisition Toolbox detect my NI DAQ devices connected through a cDAQ network chassis?.

  • Measurement Computing (MCC) Devices

    • If your MCC device does not appear in the output of , close MATLAB and make sure that that the device is working correctly in Instacal. You must configure the device in Instacal before MATLAB can recognize it.

    • If your device is still not recognized in MATLAB, make sure your device is supported by checking Measurement Computing DAQ Support from Data Acquisition Toolbox.

Why Doesn’t My NI Hardware Work?

Use the Test Panel to troubleshoot your NI hardware. The Test Panel allows you to test each subsystem supported by your device, and is installed as part of the NI-DAQmx driver software. Right-click the device in the Measurement & Automation Explorer and choose Test Panel.

For example, to verify that the analog input subsystem on your PCIe-6363 device is operating, connect a known signal (similar to the signal produced by a function generator) to one or more channels, using a screw terminal panel.

If the Test Panel does not provide you with the expected results for the subsystem, and you are sure that your test setup is configured correctly, then the hardware is not performing correctly.

For NI hardware support, visit .

Why Was My DataAcquisition Object Deleted?

An interface object might silently be deleted while executing a background operation. This could be caused by the object going out of scope at the end of a MATLAB function, before the background task completes. To avoid this, insert a after starting the operation.

What Is a Reserved Hardware Error?

If you receive the following error:

The hardware is reserved. If you are using it in another object use the release function to unreserve the hardware. If you are using it in an external program exit that program. Then try this operation again.

Identify the DataAcquisition that is currently not using this device but has reserved it, and release the associated hardware resources. If the device is reserved by:

  • Another DataAcquisition in the current MATLAB® session, do one of the following:

    • Use to release the device from the other DataAcquisition.

    • Delete the other DataAcquisition object.

  • Another DataAcquisition in a separate MATLAB session, do one of the following:

    • Use to release the device from the other DataAcquisition.

    • Delete the other DataAcquisition object.

    • Exit the other MATLAB session.

  • Another application, exit that application.

If these measures do not work, reset the device from NI MAX.

Network Device Appears Unsupported

  • If your network device appears as unsupported or unavailable, make sure that the device is connected and reserved in the NI Measurement and Automation Explorer. Use to reset devices settings.

  • If you see this timeout error when communicating with a network device:

    Network timeout error while communicating with device 'cDAQ9188-1595393Mod4'

    reconnect the device in the NI Measurement and Automation Explorer and execute in MATLAB to reset the devices settings.

  • Note

    Your network device might also appear as unsupported in the device information if it is reserved or disconnected.

Cannot Add Channels

  • Missing Subsystem

    When attempting to add a channel generates the error:

    The requested subsystem does not exist on this device

    A possible cause could be:

  • Counter Channels

    If you are using an NI 9402 with a counter/timer subsystem in a cDAQ-9172 chassis, plug the module only into slot 5 or 6. If you plug the module into any other slot, it will not show any counter/timer subsystem.

ADC Overrun Error with External Clock

If you see this error when you synchronize acquisition using an external clock,

ADC Overrun Error: If you are using an external clock, make sure that the clock frequency matches scan rate.
  • Check your external clock for the presence of noise or glitches.

  • Check the frequency of your external clock. Make sure that it matches the DataAcquisition property value.

Cannot Add Clock Connection to PXI Devices

When you try to synchronize operations using a PXI 447x series device, you see this error:

"DSA device 'PXI1Slot2' does not support sample clock synchronization. Check device's user manual.

NI DSA devices like the PXI 447x, do not support sample clock synchronization. You cannot synchronize these devices in the DataAcquisition interface using .

Cannot Complete Long Foreground Acquisition

When you try to acquire data in the foreground for a long period, you might get an out-of-memory error. Switch to background acquisitions and process data as it is received or save the data to a file to mitigate this issue.

Cannot Use PXI 4461 and 4462 Together

You cannot use a PXI 4461 and a 4462 together for synchronization, when the PXI 4461 is in the timing slot of the chassis.

Cannot Get Correct Scan Rate with Digilent Devices

The scan rate of a Digilent device can be limited by the hardware buffer size. See Digilent Analog Discovery Hardware Limitations for more information on maximum and minimum allowable rates.

Cannot Simultaneously Acquire and Generate with myDAQ Devices

You cannot acquire and generate synchronous data using myDAQ devices because they do not share a hardware clock. If you have both input and output channels in a DataAcquisition, when you start it you achieve near-simultaneous acquisition and generation. See Automatic Synchronization for more information.

Simultaneous Analog Input and Output Not Synchronized Correctly

To simultaneously acquire and generate synchronized analog signals in the same DataAcquisition, try using an external trigger.

Counter Single Scan Returns NaN

An input single scan on counter input channels might return a . If this occurs:

  • Make sure that the signal voltage complies with TTL voltage specifications.

  • Make sure that the channel frequency is within the specified frequency range.

External Clock Will Not Trigger Scan

Adding an external clock to your DataAcquisition might not trigger a scan unless you set the property value to match the expected external clock frequency.

Why Does My S/PDIF Device Time Out?

S/PDIF audio ports appear in the device list even when you have no devices plugged in.

  • If you add this device (port) to your DataAcquisition and you have no device plugged into the port, the operation times out.

  • If you have a device plugged into the S/PDIF port, you may need to match the DataAcquisition rate to the device scan rate to get accurate readings. Refer to your device documentation for information.

MOTU Device Not Working Correctly

MOTU devices Ultralight-mk3 and Traveler-mk3 might not work with DirectSound and Data Acquisition Toolbox. If you have these devices, specify the device to use stereo pairs:

  • In your MOTU Audio Console, select the Use Stereo Pairs for Windows Audio check box.

  • Specify the required sample rate in the Sample Rate field.

See Also

Functions

Related Topics

Sours: https://www.mathworks.com/help/daq/troubleshooting-tips.html
DAQ with Python

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