Counter Output with NI cDAQ 9188
I am trying to generate pulses with the counters included in the NI 9188 cDAQ chassis.I tried first to do that with NI 9411 module but this task didn't figure out in MAX.I'm trying now to perform that...
View Articleni labview fpga module pour nexys 2
salut mes amis j'ai instalé labview 2010 et le logiciel xilinix mais je ne sais pas comment utiliser ces deux logiciels a fin d'implementer tous ca sur la carte fpga nexys 2 je pense que j'ai besoin d'...
View Articlewhat are the units of the DAQmx counter?
Hello, I created this VI and several similar ones a few months ago, but, I have forgotten some of what I did back then. I believe that this VI should measure period, using the counter on the DAQ...
View ArticleWhat does "instance" mean?
Hi, I often see the word "Instance" in NI documentation, but, I don't have a clear understanding of what it means. Can someone please offer a good definition of the word "Instance" as it pertains to...
View ArticleDaq 6008 & 6211 Counting
Hi all. I'm working with an application that is counting pulses from a renco hollow shaft encoder to measure the distance traveled on a single axis platform actuated by a ballscrew and controlled by a...
View ArticleCounting Rising Edges with NI-USB 6009 and Logging data
Hello, I have a program that measures pulses and displays the number. I figured out how to create a reset button, but it needs to be automatic, not manual. In other words, the counter must start...
View ArticleMeasuring frequency with NI USB 6009
Hello, I have problem with counting edges. I have voltage-frequency conterter, so I change voltage and measure frequency by counting edges. I use DAQmx assistant (prepared block) and everything works...
View ArticlePCI-6602, Semi Period Finite Buffered Position Benchmar
Hi All, I'm using a PCI-6602 to acquire semi period measurement in a buffered and finite way. I'm expected to acquire a signal with a rate at 3 MHz for a lenght of 5M measurements. I'm using Lv 2010 +...
View ArticlePC-TIO-10
Dear colleaguesWhere can I buyPC-TIO-10 ?Thanks in advanceGregorygvkotelnikov@yandex.ru
View ArticleBuffered pulse width measurement on the 6211
Hi All I have a USB 6211 that I am trying to use to measure a pulse width or period. The input to the timer gate is the A output of a rotary encoder and I need to know the instantaneous speed of this...
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Unable to set CO.MemMapEnable
It seems that once a task is configured for buffered counter output, it becomes impossible to re-configure the task for on-demand counter output: Attempt 1: Result: Conflicting properties error at...
View Article6682h Network speed selection for IEEE 1588
Hi all, I'm currently trying to sync two PXI Chassis with IEE1588 with the PXI-6682h board.I expected around +- 50ns of offset between the two chassis and I'm observing +-400 ns of offset with a great...
View ArticleSequential Digital Outputs or Counters
I am trying to sequentially flash four digital outputs. I want to run them at a frequency, with 25% duty cycle, one after the other. To be clear, output one on for 25%, output two for 25-50%, output...
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Period counter input reads only one value instead of N samples
Hi! I am currently using a USB NI DAQ card (NI USB-6216 OEM) to monitor a frequency modulated output signal.I am using a period measurement to measure the time between falling edges. My VI already...
View ArticleChanging PFI Lines
Hello, I am using a USB 6229 Board. I am trying to count a square wave signal with a counter input. My problem: my signal is wired to PFI15, I am not sure how to change my counter source to PFI15. In...
View ArticleError -200772 occurred at DAQmx Start Task.vi
I have a PCI-6601 counter card and I'm running LabVIEW 8.2.1 and DAQmx 8.5.0f5. I have a counter task set up to continuously acquire the time that a button is pressed with respect to the time the task...
View ArticleWhy do I get the same values with MOtor ON or OFF?!
I am using cDAQ 9174 with a NI 9401 to measure period of an encoder. The attached vi measures period, and calculates an average value of 15 periods and writes the average to Excel so we can see the...
View Articlewhat is the array being returned by the DAQmx counter READ? How do I know the...
I have a question about the order of execution. In the WHILE loop, I have two things being measured, period and voltage using the DAQmx READ functions for voltage and counter. Ultimately, I want to...
View ArticlePCI 6602 register document needs clararification
Hi, I have a few questions regarding PCI 6602 register level programming document: 1. I am doing simple gated event counting (level gating, counting once). I basically arm, gate on, gate off, disarm,...
View Articlepulsewidth data logging with counter channel
Hello everyone. i have query with data logging of pulse duration measured with counter input into .lvm file pulse signal contain frequency of 100 hz with pulse duration vary from 2 to 8 ms i want to...
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