large variation on analog input reading
I am reading a voltage signal and see large fluctuations in the reading. I am using a NI PXIe-1082 chasis with a NI PXIe 6341 card and a SCB-68A breakout board. Using a handheld multimeter to measure...
View ArticleError -200324 when looping DAQmx read
Hi,This error comes from TestStand BatchModel but it concerns about DAQmx Read (Digital Bool 1Line 1Point).vi.I loop that vi (see attachment daqerror3.png) during the test. This error happens either...
View ArticleSimultaneous triggered acquire sessions with single NI-DAQmx 6363 card ?
Hi, Is it possible to perform 2 or more triggered acquire sessions in parellel (simultaneously) with a single NI-DAQmx 6363 card ? If yes, kindly give an idea how it can be achieved. thank you,Antony
View ArticleHelp using labview and the usb 6259
Hi, Im new to labview and the NI USB 6259 device. Im trying to create a program that would let me use this hardware to output 4 different voltages (2V to 5V) and switch them in time.Like output 1, 4...
View ArticlePXI chassis with DC option
Hi all, I would like to select a PXI chassis for high sampling data acquisition (4 channel, 2MHz and above).Are there any recommended PXI chassis with DC battery option so that I can power up the...
View ArticleOnboard device memory underflow usb 4431
I get error -200621 sporadically with Continuous AO/AI in Non-Regeneration Mode. I repeatedly execute the following:-Create tasks-Write M samples to output buffer-Start the tasks-Read and write N...
View Articleusb-6008/6009 Analog Ouptut Speed
I ran an experiment where I set up a simple 5V, 0V, 5V, 0V ... pattern using a USB-6008. Whether I used an analog output or digital output, it generated approximately a 1 kHz pulse pattern on my...
View ArticleHow to detect USB power off condition?
Hi, I'm using a USB-6229 with NI-DAQmx 9.5.0f2 under Windows 7 for analog data collection. An AI Voltage Channel is created, and samples gathered continuously via a registered event...
View ArticleClik here to view.
How to measure a 12VPWM signal with a 9401
Hi all. I have am trying to come up with a system to measure a 0-12V PWM signal. This is a new requirement to a system that is already under development and is using some analog modules in a 9178...
View ArticleVariable Voltage Output from NI 6008 using Labview 8.6
Hey Guys, So my goal is to create a voltage output from my NI USB 6008 that can be adjusted from 1-5V in Labview. (This output is going to a Mass Flow Controller that varies its pressure based on a...
View ArticleSpecified route cannot be satisfied for edge counter on...
Hi all, In Record digital sync signal using PFI0/PFI1 I was able to record the arrival time of a digital signal on PFI0 relative to the samples in an Analog Input task by counting the AI task...
View ArticleClik here to view.
SCXI-1102/1303 Temperatures Incorrect
Our configuration is a NI PCI-6259 card, connected to a SCXI-1000 chassis with SCXI 1102/1303 for thermocouple readings and SCXI1302. The card is also connected to a SCB-68. The issue we are having is...
View Articleusb 6361%2C Sampling rate for 8 channel
What is the maximum rate for simultaneously reading from 8 channels on USB 6361 card?I've read the specification, and there is a line that says:Sample Rate...
View Article6251 External Trigger
Hello, how to use the M6251 acquisition board, in a vi, the realization of multiple external trigger, each is responsible for collecting external trigger signal source (eg: voltage). How to modify the...
View ArticleThe sampling rate is not as what I set
In my DAQmx, I set the sampling rate at 20 kHZ (Picture 1 ), but the data I acquired was sampled at 10Hz rate (Picture 2). Who can help me? Thank you. My VI is attached.
View Article24VDC Input NI USB 6009
Hello! I'm developing a program in LabView in which I need to run some code everytime a +24VDC signal received from a digital sensor is detected. I was planning to use my NI USB 6009 but, as far as I...
View ArticleSubstract present value of signal from the value 2 seconds ago
Hi,I am fairly new to LabView but I went through the Forums and googled a lot and didn't find a solution. I have this problem:I have an analog signal obtained from my NI DAQ USB6009. I want to take the...
View ArticleUSB 6251for 3 channel, 2k Hz sampling using queues: the actual sampling rate
In my DAQmx, I set the sampling rate at 20 kHZ (Picture 1 ), but the data I acquired was sampled at 10Hz rate (Picture 2). Who can help me? Thank you. My VI is attached.
View Articlemaintain analog out after vi finishes execution
I am trying to test some hardware using LabVIEW, TestStand, and a PXI chassis. The PXI chassis has an analog out card that supplies a signal to a device, that I then read in via USB. I have developed...
View ArticleNI USB-7855R AO maximum current drive
Hi! I'm looking for maximum current drive on AO of NI USB-7855R.In user manual http://www.ni.com/pdf/manuals/375943a.pdfThere is "Minimum current drive ±2.5 mA" on page 6, Is it mistake (maximum) ?Is...
View Article