JRys

The single-value read command, such as MEAS:VOLT? (@0,1,7), initiates a new measurement every time.

The USB-1208LS has a maximum scan rate of 1200 S/s when using a single channel. You can test it using our DAQami program. If you need more help, please explain what you are doing.

If you are programming in Python, the function is c_in_scan, and one of the terms is scan rate. Let's say you program it to read a totalizing (counting) counter input with a 1000 hz square wave as the input signal. If the scan rate is set to 100, the data returned will be 10, 20, 30, 40, etc. If, instead, you were to use a polling function like c_in_32 and call this function within a loop, then you might get values like 9, 21, 30, 99, 41, etc. because the loop timing is not precise.

Please include details such as the name of your device and whether you are programming or using one of the Apps. If you are programming, please list out the section of code where you set the scan rate.

Could you try again, this time dropping Program Files from the path, for example, using D:\Measurement Computing?

Bip is bipolar or plus/minus. Bip5Volts is -5V to +5V. Uni is unipolar so Uni5Volts is 0V to +5V. The USB-1808X uses Bip10Volts, Bip5Volts, Uni10Volts, Uni5Volts.

The MCC 172 maximum sample rate is 51.2k S/s. Two A/D chips are used for simultaneous operation, so the max data throughput is 102.4k S/s.

You can use the following installation program and install InstaCal version 6.74. https://files.digilent.com/downloads/InstaCal/icalsetup.exe Next, enable .Net framework version 3.5, as shown below. After doing this, run the DASYLab Configurator utility, and in Packages->Data Acquisition, enable the Measurement Computing driver. Note that the Measurement Computing driver installer will look for a folder named ...\DASYLab\. Press the Change button and change the path to ..\DASYLab 2022.1_en\. If all goes well, DASYLab will be ready to use a measurement computing device.

The DT DAQ Adaptor for MATLAB user manual shows how to configure an external trigger, starting on page 21. Note that the DT9816 supports a Negative external trigger—see page 63 in the DT9816 user manual.

The 96 MHz clock drives the FPGA and is only remotely related to the sample rate. When you request a sample rate, a sub-clock is used to achieve the rate. If you were to request a sample rate of 100, the FPGA still runs at 96 Mhz, but data is recorded 100 times a second. When using the Totalize mode (counting), the count increases on each edge of the applied signal, whether you read it or not. Clear on Read does just that; after each read, the register is reset to the minimum value, typically zero.

It only works with 32-bit versions of LabVIEW. To get the support, run the following installer: https://files.digilent.com/downloads/iotech_software/DaqBook2000-Series/labviewdaqcom2setup.exe. After, you will have a DaqIO LabVIEW Support folder in Program Files (x86). Example programs are in the subfolder Howto and Example VI's.

InstaCal 6.72 did not change the Universal Library; it only changed how InstaCal was installed because of changes Windows 11 imposed. What is the reported error when using 6.72 or Windows 11?

The DBK604 and DBK605 are connector panels for the DBK60 box, which can hold up to three DBK cards. Open the box to view the cards and their jumper addresses. The box with thermocouple connectors most likely has three DBK82. The other box could have any number of cards, so you need to look for their identities besides the address jumper. Some boards have jumpers and switches to set the address, so you will need the user manuals. The best way to find the user manual is with a Google search or browse https://files.digilent.com/#manuals/

A 37-pin ribbon cable connects the DBK90 to the P1 port on the DaqBook/2000. Because there is a male and a female connector, a second unit can be connected using a ribbon cable between the two DBK90. If you mount the two back to back, the hardware bracket is recommended for a good connection.

Consider the DASYLab BASIC software, which costs $1299.00. However, updating the analog output port is limited to 100 S/s. If you don't have $1299.00 and are familiar with LabVIEW, you could use the free Community version and our LabVIEW VI's to generate a slow waveform. If you are a programmer, we also have C and Python support.

DAQami will not let you set the output to waveform because the USB-205 does not have buffered waveform output.

The PMD-1208LS is not a NI-DAQ device. To use it with LabVIEW, install ULx for NI LabVIEW and use our VI's for control. Once installed, look for our VI pallet on User Libraries. LabVIEW 2024 support is not yet available. Before starting, review the help document that is accessible via LabVIEW's Help menu item. The examples are installed in ..\National Instruments\LabVIEW 2023\Examples\ULx\. I suggest starting with the example ULx Cont Acq&Chart Samples-SW Timed, which is in Measure Slow Varying Signal.llb in ..\ULx\Analog In\.

The ULx for NI LabVIEW installer currently supports LabVIEW 2015 - 2023. The next release is coming soon. I will update this post when I know when.

We are aware of no reported problems regarding Visual Studio 2017. There's likely a programming mistake; for example, there is no test to determine if TestBoard is valid, and the error status needs to be checked when executing the AIn function call. I am attaching a USB-201 test program that returns data from the first four channels for display. Program.cs

Please see my attached vi below; it updates FirstPortA/D0. ULx boolean write.vi

If possible, could you plug it into another computer and make sure the power switch is set to 'on.' If nothing lights up, then the board is probably broken. It's hard to say what happened; it could be that a static shock took it out or that it simply failed. In this case, you can use the forum's private message and send me the serial number, purchase information such as an invoice or order number, and your shipping address.

Could you try our example? Open the Generate Values LLB library in \National Instruments\LabVIEW 2022\Examples\ULx\Digital\. The example's front panel has eight buttons, so select the eight lines of FirstPortA.

I suspect you forgot to constrain the pins used by the PmodAD1_01. Go to Sources, select Constraints, and add a constraints file. Open the file and copy the constraints below. Please pay close attention to the ja_pin#_io numbers, as they are not in order. ## Pmod Header JA set_property -dict { PACKAGE_PIN Y18 IOSTANDARD LVCMOS33 } [get_ports { ja_pin1_io }]; #IO_L17P_T2_34 Sch=ja_p[1] set_property -dict { PACKAGE_PIN Y19 IOSTANDARD LVCMOS33 } [get_ports { ja_pin2_io }]; #IO_L17N_T2_34 Sch=ja_n[1] set_property -dict { PACKAGE_PIN Y16 IOSTANDARD LVCMOS33 } [get_ports { ja_pin3_io }]; #IO_L7P_T1_34 Sch=ja_p[2] set_property -dict { PACKAGE_PIN Y17 IOSTANDARD LVCMOS33 } [get_ports { ja_pin4_io }]; #IO_L7N_T1_34 Sch=ja_n[2] set_property -dict { PACKAGE_PIN U18 IOSTANDARD LVCMOS33 } [get_ports { ja_pin7_io }]; #IO_L12P_T1_MRCC_34 Sch=ja_p[3] set_property -dict { PACKAGE_PIN U19 IOSTANDARD LVCMOS33 } [get_ports { ja_pin8_io }]; #IO_L12N_T1_MRCC_34 Sch=ja_n[3] set_property -dict { PACKAGE_PIN W18 IOSTANDARD LVCMOS33 } [get_ports { ja_pin9_io }]; #IO_L22P_T3_34 Sch=ja_p[4] set_property -dict { PACKAGE_PIN W19 IOSTANDARD LVCMOS33 } [get_ports { ja_pin10_io }]; #IO_L22N_T3_34 Sch=ja_n[4]

I have a Rev D Arty Z7. After reading your post, I walked through the Zynq Server guide using Vivado 2023.1 and did not experience the same trouble. Older Arty Z7 boards use an older Rev Realtek PHY chip and should work as is with Vivado, whereas new boards require a patch to the LWIP Library. To patch your system, use the attached file and overwrite: C:\Xilinx\Vitis\2023.1\data\embeddedsw\ThirdParty\sw_services\lwip213_v1_0\src\contrib\ports\xilinx\netif\xemacpsif_physpeed.c, assuming you have 2023.1. Could you walk through the Zynq Server guide using one of your new boards to see if you can get the echo server working with the update to the LWIP Library? xemacpsif_physpeed.c

Our Data Acquisition Handbook is a great place to start. https://files.digilent.com/reference/data-acquisition-handbook.pdf