(C code) Sending n triggers with AO waveform
Hello everyone, I am trying to do the following: I have C++ code that generates a waveform on an analog out channel of a PCIe-6321. This works well. Now, in certain conditions I also want to send a...
View ArticleProblem two analog output generation NIDAQ mx
Hello everybody, This is my first post so please forgive me if I make any mistake explaining myself. I am working in a MAC environment with LabView 2012 and with a DAQ NI USB-6218. I am trying to...
View ArticleCDAQ 9205 card measuring zero values periodically
I have connected CDAQ9189 using ethernet to my computer.I am using 9205 card to acquire a sine wave of freq 1Hz, amplitude 1Vpp.I am using nidaqmx with python to save the data. However, the behaviour I...
View ArticleSingle Sample Analog Output without using the analog input clock for a...
I am trying to output single samples from a PXI-6733 at the time of the board's sample clock. However it looks like the samples are output at the instant they are written using DaqMx Write Analog Wfrm...
View ArticleAssigning tasks to hardware as needed
Hi,This is a general enquiry, not related to a specific issue, but it will help feed purchasing decisions. We use NI hardware connected to third party software (Vector CANape) collecting data via...
View ArticleSignalExpress terminates with "Sample period too short" error
Hi all, I am having the same issue as the following:https://forums.ni.com/t5/Multifunction-DAQ/SignalExpress-System-logs-for-5-minutes-then-terminates-with/td-p/2794178Any ideas on how to fix it? Thanks.
View ArticleDaq Sample Rate Calculation Method
I want to calculate the Array Size Based on DAQ Sample Clock and Read Function, I have configured the VI as attached. I get different (No of Rows) once i change the Elapsed Time and Rate. I am...
View ArticleRead scaled units from NIDAQmx task with python
How can I read scaled units (e.g. mbar) from tasks definied in NIDAQmx with Phython nidaqmx?I can only access signal names and values from defined tasks (using: nidaqmx.task). I can also access defined...
View ArticleQuestion on USB DAQ 6008
Dear All, I want to generate output signal from usb 6008 between 10-15 Hz for controlling diaphragm shutter (optical shutter) in (TTL) external modulation mode. I am not able to control the frequency...
View ArticleDigital Triggering with NI PCI-6132 in python nidaqmx
I'm using the python (v3.6) API nidaqmx (https://nidaqmx-python.readthedocs.io/) to interface with an NI PCI-6132 Multifunction DAQ card on a Windows 10 PC. I'd like to be able to use a digital...
View ArticleCalibrating a load cell
Hey guys.Just looking for a good procedure to calibrate a load cell in Lab View. I have my load cell wired up and reading input in the VI module, but I don't have the calibration certificate. Just...
View ArticleDaqExpress strain gauge readings
Hi,I'm fairly new to NI but have some expereince using LabView and DaqExpress. I have recently been measuring strain on asphalt material using half bridge1 config. 120 Ohm Gauges, 2.5V excitation,...
View ArticleDAQ Number of Samples
I would like to calculate the Number of Samples per Channel to avoid Error. I am CLAD Student. (Attached is Snip and VI)
View ArticleESD affecting DAQ USB 6002!!!!
Hi, I am using the USB-6002 DAQ in a system. My system connects to some of the analog and digital pins and then the DAQ is connected to the Tablet via a USB cable.All this is fully enclosed in an ABS...
View ArticleWhere to Find how many samples Read
How we can check "How many samples" Read. Also appreciate if you can give a formula to calculate the Number of Samples.I am preparing for CLAD and few questions are on "No of Samples"
View ArticleUSB 6002 to read high differential voltage
Hello, I'm trying to use USB-6002 to measure currents (read voltage over a 0.1 ohm resistor and convert to current). The problem is that input voltage is about 16V (USB-6002's spec is +/- 10V). Would...
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Custom scales grayed out in DAQ Assistant Express VI
Hello all, I'm using NI 9174 cDAQ to acquire several analog measurements (current) and control several digital outputs. I have used custom scales saved in NI MAX for quite some time and it...
View ArticleMultichannel analog output Python NiDaqmx
Hi, I am trying to generate two analog output signals using the write function of the NiDaqmx package for python. However when passing a 2D array as output array I get the following error:...
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Floating voltage on USB-6210
Hi Every one,I have an USB-6210, I used Test Panel to read Analog input, i didn't connected any signals at AI, it have a floating voltage.I have tested on USB-6009, USB-6009 don't have this floating...
View ArticleSynchronisation de 2 cDAQ avec module NI-9469
Bonjour, Voici ma problématique :Actuellement, j'utilise un cDAQ-9178 avec divers modules d'acquisition et de génération de signaux sur un banc de test. Aujourd'hui, j'envisage d'augmenter les...
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