Get counter port mapping
Hello.I want to have a possibility to get the port and line number of the ports by a function in CVI.So e.g. to know that counter 0 is port 2 line 4 and so on.Thanks
View ArticleSet non-periodical external sampling clock nidaqmx python package
Hello everyone ! I am new with the nidaqmx python package and acquisition measurement devices and have some problems to set a specific external sampling clock for the acquisition of data (NI cDAQ-9185...
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external clock source(unequal frequency) problem
Hello, l have sampling problem which is using an unequal frequency clock source.I made a vi that convert analog signal to digital signal. so I can use that digital signal for clock source.If analog...
View ArticleCounting non-TTL pulses
I'm need to count pulses having 2V amplitude, 15ns width (device spec sheet, pg2). My DAQ board is similar to NI-6356. The NI 6356 spec sheet doesn't say what kind of signals it counts but I assume...
View ArticleThree tasks with high frequency with 2 counters methods, 50103 error
I will try to be simple: We have one chassis 9189 with 8 modules, two of them are used to take frequency mesurements (9401), let's say module 6 and module 7. I need mesuring frequency on three...
View ArticleFrequency Measurement with NI-9361 not stable
Hello,I am playing around with a cDAQ-9185 system with a NI-9361 to measure a 60kHz frequency signal. But the read data abnormal occur periodic. I have tried to changed every parameters even the...
View ArticleCounter Output *only* on non-default line and *not* on the default line
Dear all, I've read through many related posts. None have solved my problem. I am aware of the "lazy uncommit" issue of digital routing. But my post is about something else (I think). I use a USB-6211...
View ArticleFrequency divider circuit for simultaion in LabView
I want to simulate a frequency divider that divides the input signal by 4. I am using a signal generator with a square wave output and feeding this as a clock to the D flip flop circuit (using logic...
View ArticleCO: Requested vs. actual frequency
Hi, I am using a PCIe-6353 DAQ card and try to figure out what the 'allowed' frequencies are. I found some threads about it but I am not sure I understood everything correctly. This article comes...
View ArticleExternal Clock for DAQmx Sampling when using Sigma Delta ADCs
As stated in PXIe-4302 User Manual (NI Document 377003a):External ClockThe NI PXIe-4302/4303 ADCs cannot be clocked from external sources such as encoders ortachometers. However, signal processing...
View ArticleCounters Terminals on PXIe-6341
On bellow page there is a table with Default Counter/Timer Terminals of the PXIe-6341https://www.ni.com/documentation/en/pxi-multifunction-io-module/latest/pxie-6341/pinout/ Most of the Terminals are...
View ArticleCount rising edges of counter with Python
Hey there, I am trying to count the rising edges of an internal timer of our USB-6366 (X-Series) device with Python via nidaqmx.I found the following example to do that in the git repository...
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NI USB-6001 Counting Edges to Pulse Time
Hi all, I made a counter with NI USB 6001 as following: From counting edges, I can get the frequency.Is there any way I can get PW (Pulse Width) or Duty Cycle from counting edges or from this device?...
View ArticleChanging hardware from PCI 6603 to CDAQ 9361
I currently have a LabVIEW application using PCI 6602 counters. I want to change the hardware and start using cDAQ 9361 and replace PCI 6602.Do I need to keep anything in mind while doing this...
View ArticleReading encoder data and determining the RPM
Hi, I am Abbishek and I am a graduate student in the Department of Aerospace Engineering in Auburn University. I am using a stepper motor to rotate a shaft and a rotary encoder to measure the position...
View ArticleSynchonisation of multipe different I/O modules inside a CompactDAQ Chassis
Hello, I´m currently using various different I/O-modules (e.g. NI9229, NI9203) inside the cDAQ-9184 chassis.For setting it up and creating tasks im using the NI MAX software. These tasks are then used...
View ArticleSignal detection in NI9411
I do have a NI9411 device connected in CDaq 9174. It is wired with an encoder. The signal detection was good at first and all pulses were picked up. Just until few days back there are no pulses being...
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Confused about CO Pulse output.
I'm converting a Traditional DAQ application that used "Single Triggered Pulse Generation". It seems like the appropriate DAQmx solution is to use a "CO Pulse Ticks" task. I'm using a PXIe-6614 board,...
View ArticleNeed to control 4 counters using cDAQ-9189 and NI-9401
I really just need some help to know where to start. This is my first time using cDAQ hardware. My application requires 4 counter pulse outputs. Lets call them W, X, Y, Z. These will map to the 9401...
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