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PCIe-6612 vs X-series multifunction DAQ
I'm doing what should be a pretty simple edge counting/event timestamping operation. I have some random events occurring at unknown times after an external trigger signal. I need to timestamp the time...
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How can i use internal base clock when i count two inputs
Hi. I'm using a USB-6343 and there is a internal base clocks.I want to count two digital inputs and see in array, so i build a vi like belowBut it says "External sample clock source must be specified...
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Measuring duty cycle with NI-DAQmx Python on USB-6218
Hi everyone ! I am a student and very new to this and am still getting familiar with the basics. I am working on a project with an electronic card.I have to send some commands on the serial link of the...
View ArticleHow to control an external device with counter output channel?
Hi, I am learning to use NI multifunction I/O board to trigger an external stimulator. I use matlab to control the NI board and now can send 5v voltage output through an analog output channel to...
View Articlepower supply of USB-6346
Hello Everyone, I have to replace an old system, which uses a Daqcard 6062e (PCMCIA).I was thinking about to chose the USB-6346 which has similar characteristics, but i have a doubt concerning the...
View ArticleHow to custom CAN Frame of checksum and rollcounter in VeriStand
I calculate CAN Frame of checksum and rollcounter in simulink and mapping XNET CAN Frame,but occasional rollingcounter is inaccuracy. So I want to consult custom CAN Frame of checksum and...
View ArticleArdiuno opto interrupter RPM
Hi, Pretty new to Labview and struggling to find a solution to this. I want to read the RPM of a DC motor. I have an opto interrupter attached to the axel of the DC motor which has 20 slots in it. I am...
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count for exact time
Hi I made a counter with USB-6343 as following :Delay decides how much time does it count.when I run this vi with 1000hz input for 1000ms, it counts not only 1000 but also 1001, 1002, 1003. It seems to...
View ArticleHow to specfy the terminal of USB 6210 with python ?
Dear all, I am learning how to use the nidaq device with python.we have USB 6210 and python module nidaqmx.we want to use USB 6210 as counter. i made python code...
View ArticlePXI 6608
Hello guys,i'm working on project using PXI 6608 as counter that count event. I'm using CVI to run this device , but when I run the program it gave me nothing to count even though I have created the...
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数据采集时每个数据点的持续时间问题
现在我有一个在时间上进行复用的模拟信号，如图所示，每种颜色代表其中一路信号，如果我只想采集黄色的信号，利用一个与黄色信号同步的时钟进行采集可行吗？其他颜色的数据是丢失了还是被积分了？
View ArticlePXI-6602 Clock (PXI and cPCI)
Why does the calibration procedure for the PXI-6602 instruct to use a PCI slot? The PXI-6602 that I have has an EMPTY 10 MHz Osc silkscreened slot with several places for parts around it that have no...
View ArticleUse DAQmx Timing and Trigger Property Node together
Hello, I was trying to do edge counting on my NI 6602 DAQ device and wanted to place both DAQmx Timing Property Node (to read the "Sample Rate") and DAQmx Trigger Property Node (to set up the trigger)...
View ArticleCounting with Arm Start Trigger with Python - NI-DAQmx
We are trying to arm start trigger with the DAQ board to acquire data from a single photon counter. We developed the code like this: # Create a counter task: readTask = nidaqmx.Task() channel =...
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PXI 6608 always report error
I use PXI6608 as counter, to measure the frequency of 50M, but always report error, seems have problem to get the frequency.I use scope manually check, the waveform is there, just a little distortion...
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USB-6211: edge counting within externally defined window
I am attempting to use a USB-6211 to edge count pulses within an externally defined window, as diagrammed above. I'll call blue my gate and orange my signal---I wish to know how many signal pulses...
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USB-6211 count edges during gate
I'm attempting to use a USB-6211 to count signal pulses within an external gate, as shown above. I'll refer to my blue pulses as my gate and orange pulses as my signal. I want to count how many orange...
View ArticleCreate output trigger relative to two input triggers?
I'm updating a Traditional DAQ application to NI-DAQmx.The old system uses PXI-6602 boards. The new one uses PXIe-6614 boards.Because of limitations of DAQmx, I don't think a straight port is going to...
View ArticleSample clock for linear encoder on NI 9402 board
Hi,I'm facing an issue with the sample clock settings for a linear encoder.I have a NI 9402 module attached to a NI 9191 cDAQ module. The signals A+ and B+ are connected to the PFI0 and PFI2 terminals...
View ArticleDSI3 Bus supportive NI hardware
Is anyone aware of any NI hardware which supports DSI3 bus interface? I want to simulate some signals in DSI3 bus. Ref: https://www.dsiconsortium.org/downloads/DSI3_%20Bus_Standard_r1.00.pdf...
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