Commande par poussoir temporisée
Bonjour. Je souhaite commander un éclairage en 230V via une commande par poussoir.Jusque la rien d'extraordinaire me direz-vous mais pour moi ça se complique car la commande doit se faire en fonction...
View Article-200141 error thrown when sampling a high frequency signal on usb-6281
I have a USB-6281, and I am attempting to use it to timetag the pulses from an excelitas APD. However, when I attempt to use a counter with an 80 MHz time base to measure the period between each pulse...
View ArticleEncoder with external sample clock cDAQ 9361
I'm looking at potentially replacing an old Traditional NIDAQ PCI counter/timer setup with a cDAQ chassis. The application is counting in 6 quadrature linear encoders using a converted pulsetrain from...
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PCI-6601 Encoder to Counter Converter Chip Wiring
Hello! I was hoping anyone might has some ideas or knowledge about how to wire/implement the LabVIEW software of a PCI 6601 counter. Specifically, I am using a PC6-C-4-H5, which essentially takes a...
View ArticleNI7851R FPGA external clock support
Hi, I'm currently using NI-7851R. Is external clock supported in newer version of the Labview fpga? If not, is it possible for FPGA target to retrieve twice from a 64 bit DMA FIFO in a single clock...
View Articleni6210 sample rate and sample per loop, task time
the sample rate set as 500Hz, sample per loop 500, cycle 100. I found the task was finished in 10 s instead of 100s.what i dont understand is the time taken for this task. i suppose per loop takes 1s,...
View ArticleNI6210 Counter, Sample rate and loop time
I was trying to make a counting task by 6210.Counter setting Dev1/Ctr0; Input (1KHz) to DEV1/PFI0; sample clock Dev1/PFI2, generated from PFI5.If I set sample rate 500, sample per loop 500, number of...
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Adding an encodeur to existing application
Hi, I'm back with a new topic. I would like to add an encoder to my previous application using the same time base. My goal is to Compare the speed of the two encodeur. (crank/cam) Of course encodeur...
View ArticlePWM Duty Cycle Offset due to hardware limitation? NI-9472
Testing an NI-9472 using PWM code based on example found at link below. https://knowledge.ni.com/KnowledgeArticleDetails?id=kA03q000000x1P0CAI&l=en-CA Measured output appears to be indicating an...
View ArticlePCIe6612: Inverted PWM duty cycle reported by PWM measurement.
Hello, Using the NI API, I have output a PWM signal which I then measure with another counter on the same card. Works fine. Without too much effort, I can introduce a disturbance such as...
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Generating two synchrouns digital clocks with python nidaqmx
I am trying to generate two synchronous clock for sensor control (i2s protocol shown in the figure below). The main clock (CK) is at 1024hKz. The other one (WS) is 1024/64hKz but should be changing...
View ArticleUsing Counters on ELVIS II+
Hello all, I am starting a project that involves producing pulsed ultrasound using an ELVIS II+ and Labview DAQassistant. I am still relatively new to using the ELVIS and labview so I am just slightly...
View ArticleNI 9411 with Siemens Sitrans F M Mag 6000
I have a Siemens SITRANS F M MAG 6000 that I connect to a 9411 and ctrl 0 to measure make a frequency measurement. When I connect these two devices together I don't get any frequency at all. Is there...
View Articleconfiguring pfi pins as counter
I want to configure pfi pins of daq max 6229 card as a counter. What pfi pins should i use and can anyone help in providing some information regarding the pfi pins used and their connections. Can...
View ArticleConfiguring counter to generate PWM signals
I can generate single PWM signal from a single counter, and there are two counters in 6229 card. My Question is that can i generate more than two PWM signals or any complementary pwm signal from the...
View Articlepcie-6323 counter
I am using 6323 counter - continuous output. I would like to have 2 counter output (cntr0,cntr1) going at the same time. It seems like when the Counter-countinuous Output - stay on. vi (below ) is...
View ArticleFREQ_OUT Pin on Elvis II+
Hello all, I was looking to gain additional information on the frequency output (FREQ_OUT) pin on the Elvis II+. The M series manual that I have been using states "The Frequency Output (FREQ OUT)...
View ArticleCreating a countdown timer
Hi, I'm back with more questions. I'm trying to figure out the best way to display a countdown timer. The idea is I turn on a power supply for a set time (Say 30minutes) and I want to be able to view...
View ArticleTrigger usage on cDAQ-9185 and NI-9401
Hi all,I have a cDAQ 9185 & NI-9401 to measure digital signals. ctr0 is usedfor edge separation, ctr2 & ctr3 to measure frequencies, which works well.I need to add one trigger condition for all...
View ArticleAstronics PXIe-2461 sampling rate
In the specification, it states "Time Interval Measurement: 1248 readings per second max. under the following conditions: Input freq. > 10kHz". Does this mean I will only sample about 1lHz and will...
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