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counter returns garbage values
I am using cDAQ 9184 and 9401 Digital I/O card,I am using the counters available for frequency measurement(pulses are generated by a hall sensor,whose frequency i want to measure to estimate DC motor...
View Articlei need help in frequency readings
Hi,goodafternoon,By using the attached file i wanted to read the frequency of the signal " the signal is pulses"i have done it and record the reading in excel files if u check the excel files u will...
View ArticleHow to create timer to delay On/Off
I am currently using the evaluation version of LabView to figure out if LabView is a good choice for an application I would normally use ladder logic for. I am trying to find examples on how to do the...
View ArticleCounter output internal trigger issue on a 6133
I have a VI whose purpose is to record analog data and produce a TTL pulse at the start of the acquisition. The acquisition is triggered when one of the analog channels reaches a specified level. The...
View ArticleNI PCI 6602 triggered counters
Dear community, I have a general question concerning the possibility regarding the measurement capabilities of the NI PCI 6602. Here is what I need: Data of the form [time,count] with an equidistant...
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How to generate a Single Point (On-Demand) Edge Counting with Pause Trigger
I have problem when creating a Labview program to generate a Single Point (On-Demand) Edge Counting with Pause Trigger shown in FIG 1 below. I only know how to generate edge counter without pause...
View ArticleFrequency/Period measurement with USB-6218
I have been trying to get a USB-6218 to measure either frequency or period and have been running in to issues. I have attempted to connected to each counter gate (PFI1 or PFI2) and have not had any...
View ArticleNI6321 triggering laser
Hey guys, I have an Agilent signal generator triggering my PCIe 6321 card and an ultrasonic pulser. Furthermore I want also to trigger two other devices (two different lasers).However, since the signal...
View ArticleHelp with Single photon counter (SPCM AQR 15) for fluorescence detection and...
Hi all, Recently I am building a fast fluorescence detection setup with a single photon counter (SPCM AQR 15) and I would like to use the fluoresence signal to trigger a solenoid valve using Labview...
View Article9401, 2 encodeurs and sampling recording
Hello I have a NI9401 on a C-DAQ9171. 2 optical encoders are connected to the 9401. My problem is that I want to make an internal timer, in order to be able to record the data with a sampling rate that...
View Articlesemi period measurement with an external clock
HelloI am trying to make PWM (2ms width) measurement with a counter (PCIe-6363), but with external clk (1MHz) to make 1 measurement (high time/low time) every 100msThis ext clock is create with another...
View ArticleNeed help in NI6602/6259 counting in Matlab
Hi, NI 6259 supposed to be a upgraded version of NI 6602, but why do I got faster count rate with NI 6602than NI 6259 in Matlab?In the spec, both cards has the same 80MHz clock/timer frequency and...
View Article9401 clock source for angle measurement
Hello I have a NI9401 on a C-DAQ9178 on slot 5. One encounter is connected to the 9401 and i created a task for the angular position measurement. My problem is that I want to have continuous samples...
View ArticleRequesting help with timing of data acquisition
The part of the code that I need help with consists of two main sections. The two sections are inside the same frame of a flat sequence structure. The bottom part is responsible for creating a pulse...
View ArticleContinuous Buffered Edge Counting with the NI PCI 6602 using multiple counters
Dear Community, I am new to the DAQmx developement and I have a basic problem which raises some questions. The situation is quite simple: I want to perform, as indicated, a continuous buffered edge...
View Articleget date
Good evening to all, I want to create a table that contains dates that I record every click The problem is that I got to record a single value Help me please Here attached the vi
View ArticleStacking Output Delays
Hi All,I'm having some problems implementing a delay for an output signal on FPGA. Basically I need my code to respond to signals with a delay, but during that delay it should still be able to respond...
View ArticleI am new in labview , I want to measure angular position of rotating shafts ,...
I am new in labview , I want to measure angular position of rotating shafts in same time , I have two encoder NI card 9401 and all connection
View Articleangular position measurement
how to used encoders to angular position measurement of rotating shafts
View ArticleFPGA dynamically changing array problem
Hi All,In a continuation of a problem posted earlier (same project, new problem), I'm using an array as a storage of 'time stamps'. Basically, elements get added to the array when a signal is detected...
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