DMA Performance Improvements for TIO-based Devices
Hello! DMA Performance Improvements for TIO-based Deviceshttp://digital.ni.com/public.nsf/websearch/1B64310FAE9007C086256A1D006D9BBF Can I apply the procedure to NI-DAQmx 9? These ini-files dont seem...
View Articlesynchronize two counter outputs on 6071E card
Well, it's the usual how do I synchronize two counters problem. I'm using the 6071E with DAQmx .NET 4.0. I define a Task and attach to it two counter output channels with implicit timing and zero...
View ArticleTwo pulses with a delay lower than 1ms between them
I've been trying to setup a couple of programmes that will operate a fuel injector and a ccd camera for a university project. Firstly, I need a programme that will generate two pulses of different...
View ArticleChanging the value setpoint at every 50s using elapsed time express
Hi. I am developing a tank level control system program using Neural Network based controller and trying to compare with PID based controller. I need to do experiment to compare results of these two...
View ArticleRetriggerable buffered counting edge task
Dear all, I have been working on "Retriggerable buffered counting edge task" on a single counter input channel, let me describe what I want to achieve: Create a CI to count finite rising edges with...
View ArticleDuty Cycle Measuring with a 6211
I seem to be having a bit of an issue reading a duty cycle from a rotational sensor. The sensor that I am attempting to read from is putting out a 3.5% duty cycle, TTL wave of 0-5, at rest. The sensor...
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signal level for pulse width measurement
Hello,I am measuring the pulse width with the M6251 by counter (CI Pulse Width) I understand that the digital input is working on TTL levels (0,8V low 2,4V high).Can it be exactly said at which signal...
View Articlebuffered counter output in C
Hi everyone, I am looking for a possibility to generate a finite buffered counter output with varying pulse widths, using the X-Series. I am working in C / Python. I want to output two pulses triggered...
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Interrupts mode failure for counters on 6624
Hi everyone, I'm facing a problem with a counter board PCI-6624.I have 5 flowmeters inputs in quadrature.3 of them are in DMA and 2 in Interrupts mode for the edge count DAQmx read function. (6624...
View ArticleRPM measurement
I want to measure RPM using 8-pin rotary encoder using PXI-6221. I am able to measure angular position but RPM is fluctuating.
View ArticleDAQmxReadCounterF64() timeouts blocking program runtime
Hi, I have a PCI-7342 board connected to a MID-7652 box that is being used to control a servo motor on a rotary axis with an encoder. I also have a PCIe-6323 board that is used to read a quadrature...
View Article6602 Synchronize 4 outputs by matlab
Hello, I am trying to use PCI-6602 counters to generate 4 pulses that start together. The width of these 4 pulses are ms level. However, the delay between channels is ms level too. So how to...
View Articlepci 6602 external clock
Hello I'm a little bit a newb concerning the PCI-6602, and I need somenones help. I have a APD which delivers signals I want to count while an external gate is high. My code so far (this is just pseudo...
View Articlecontador de pulsos de dos canales
Hola a todos¡Consulto a uds. si es posible hacer un contador de pulsos que lea dos canales simultaneamente. Estoy usando Labview 8.6 , la placa NI-PCI-6221, la cual supuestamente posee dos canales que...
View ArticleGated pulse train from a 9401 gets stuck in a high state
I posted recently in the LabVIEW board and I am now running into an issue that I think would be more appropriate to discuss in this board. I am using the attached VI to generate a gated pulse train...
View ArticleLaser pulse counter in FPGA
Dear guys, i have a laser pulses that i wont to measure the time between the start and end pulse via FPGA. i am not familiar with FPGA but because of the cost i am forced to use it. my fpga D70. so if...
View ArticleQuadrature Encoder USB-6215 glitch
I'm using the USB-6215 for a quadrature encoder. I'm trying this two ways, with the same results: I add encoder channels A/B to PF0 and PF1 (terminal 1 and 2), using counter 0. Power is of course from...
View Articledigital waveform frequency measurment
Hi,i have Motor driver can give me the speed as feedback "digital waveform" the frequency is proporational with the speed i have Cdaq 9188also i have ni94011. at which slot i have to connect the...
View Articlefrequency measurement keep reading value when stop rotation
Hi,i am doing the program in the attachment in this program i am using ni9401 and cDAQ 9188 to measure frequency from motor driver but i am facing some problems 1. the reading sometimes different than...
View Articleelapsed time
Hi,I am using two Elapsed time and I want to synchronize the two. Is there any method how I can do it??
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