Questions about NI 2954R local-oscillator
To who it may concernCurrently, we are using NI USRP 2954 R for Wi-Fi-related research. Based on the performance of the system, we have two questions about the USRP: if the USRP uses homodyne receiver...
View ArticlecRio
Hello I am a noob when it comes to NI tech so please bear with me. We have a cRIO installed on one of our machines. I need to make an adjustment to one of the timer values that triggers a certain...
View ArticleHow to generate digital pulse which has 200 microsecond pulse width using...
Hello all, I need to generate digital pulse which has 200 microsecond pulse width. When I arrange channel settings with CO Pulse Time and give a microsecond value in high and low time controls, my...
View ArticleConvert Oscope Data to waveform
I have an encoder connected to an Oscope. I can record the squarewave TTL voltage data as a CSV file. The Voltage data is synchronously collected at a dt of 0.0004 sec. I use a threshold detector to...
View ArticleImplement 'Implicit Buffered Read' using Ex VI 'Count Edges'
I am trying to implement Implicit Buffered Read (see image below) or page:https://www.ni.com/docs/en-US/bundle/testscale-feature/page/counter-read.html Labview 2021 SP1 Pro, cDAQ chassis 8189, 9402 dio...
View ArticleUse counter or scope card for frequency measurement ?
Hi Sir, I have a question, my understanding is that, we can use counter for frequency measurement.But for what kind of situation, we use counter, and what kind of situation we use scope ? Digital...
View ArticlePCIe6738板卡脉冲输出时如何选择端子
在DAQmxCreateCOPulseChanFreq函数的说明中提到：除非选择了不同的输出端子，否则脉冲会出现在默认的输出端子上（The pulses appear on the default output terminal of the counter unless you select a different output terminal.），请问此处如何选择别的输出端子即PFI口
View Articlehow to choose a different terminal for counter output task using PCIe-6738
I notify that in the purpose description of C function "DAQmxCreateCOPulseChanFreq", it says "The pulses appear on the default output terminal of the counter unless you select a different output...
View ArticleHow do I create data 1 when the pulse is in high state and data 0 when pulse...
Hello all, I can generate pulses with PXI-6624 Counter board as you can see attachment. But I have some problem. Generally my task work princible is that pulses high time is constant which is 204us and...
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Does Rising(falling) edge time and high time influence the determine of...
Hi!I use a external sample clock to count edge.But I find something is wrong:I send 400 external TTL-like(periodicity=100ms) sigal as sample clock,but before the sample clock played,the aquisition is...
View ArticleEncoder Data Reading Issue With USB-6210 Device
I want to read linear encoder data from my USB-6210 device and visualize it on my C# WPF application but i have some issues about that. I tried to use DAQMX library's functions about encoder reading...
View ArticleHow to read a ctr when counts can be zero?
I need to measure two frequencies from a device. One is 30-90 kHz, and one is 1024 pulses per revolution. If the engine is not spinning, one of the counters will not sense a rising edge over the...
View ArticlePXI 6624: how to set the voltage range
This card support 48VDC, How to select the different voltage when it is configuration as counter or timer.
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Delay between 2 digital output signals on the USB-6351
Hello everybody,I'm looking for a while how to realize a delay between 2 digital output pulses, with the USB-6351 card.I first made a program to send a signal to the digital output. For that, I used...
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[PCIE-6363]How can I perfome a sample clock edge count task with a gate?
Hello!I'D like to achieve a task,which is like sample clock pulse width measurement.!!but have a important differences!!Here is the introduction.As you can see:I'd like to enable counter when the gate...
View ArticleUsing NI 9411 module and Futek TRS 605 for Rotary Encoder Measurements
I am currently using an Futek 605 torque sensor to measure torque and RPM. The torque measurements can be collected fine but unfortunately, I cannot read the pulses generated from the rotary encoder...
View ArticleNI 9411 and Linear Encoder - Inverted travel
Hi, I've stumbled across an issue with two NI-9411s being used in a NI-9149 c-RIO to measure linear motion. Each 9411 is used one at a time and they are reporting encoder output differently. Here's...
View ArticleReading in multiple pulse inputs with NI DAQmx in Python
Hi everyone, I am trying to read in multiple pulse inputs simultaneously using the nidaqmx library in Python, and I'm having some trouble. My physical setup consists of the following:DAQ:...
View ArticleWhether the PXI-6624 supports the VISA interface
The PXI-6624 card can be operated by VISA interface or not.
View Articlenisync API in cRIO
I am using a cRIO 9049 with 1588 synchronization. I need to use the NISYNC API using a C++ application. Where I can find examples or the latest information on NISYNC API?
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