PWM with Low Frequency (less than 40 Hz)
i'm using myRio to generate PWM signal. how can I get PWM frequency lower than 40 Hz, I would like to reach 10, 20, 30, 40 Hz
View ArticlePCI-6115を用いたパルスカウンタ
PCI-6115, BNC2110を用いてパルスカウントを試みているのですがうまくいきません．アドバイスいただければ幸いです． DAQmxを以下の設定で実行すると，エラーコード200141と表示されます．信号を収録ーカウンタ入力ーエッジカウントーctr0を選択．集録モード：Nサンプル読み取るサンプル数：1Mレート：10MHz測定対象のパルスシグナル：ctr0(PFI9)外部クロック(10MHz...
View Articlecorrelated time stamping
Hi,I'm using timestamp to log data every second in while loop , but the stamp is skipping some seconds count for some reasons. I'm using USB DDAQ acquisition card. could somebody please help. Regards,Tj
View Articletime stamp not consistent
Hi,I'm using timestamp to log data every second in while loop , but the stamp is skipping some seconds count for some reasons. I'm using USB DDAQ acquisition card. could somebody please help. Regards,Tj
View ArticleTrouble measuring duty cycle of signal
Dear community, I am having trouble measuring the duty cycle of a TTL signal. I generate analog signals through aoX (about 10 Hz signal) and feed them to an electronics module. The module converts...
View ArticleBNC 2121 manual
HiI'm having a little trouble understanding the manual for BNC 2121. I have connected it to a PCI 6602, and I want to read the frequency of the signal using LabVIEW. But I am unable to understand...
View ArticleInitializing PCIe-6351 in C#
As the title suggests, I'm writing a controller in C# with the aim to read counts using a PCIe-6351. Right now, all I'm asking my code to do is display the counter readout starting from a value of 10...
View ArticleFast triggered signal generation USB-6216
For my application I need to generate repeatedly triggered analog outputs with the NI USB-6216. The triggers are relatively fast (20-30 ms distance) in an irregular pattern. When I setup the signal...
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Simultaneous input and output on a cDAQ & NI 9401
I'm relatively new to Labview and this is my first time dealing with DIO so please bear with me. I need to produce a PWM signal on one channel to control some motor drives and measure the frequency of...
View ArticleMeasuring Distance with linear magnetic encoder and USB 6008
Hello, I am working on setting up a linear magnetic encoder along a strength testing machine. Ideally I'll have the magnetic strip along the back and the encoder attached to the moving stage in order...
View ArticleHamamatsu H5783 PMT Single Photon Counting?
I have an old Hamamatsu H5783 PMT, and I am trying to figure out whether it is capable of conducting single photon counting. I am unsure as to what the specific specs needed are for single photon...
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Multiple Channel Pulse Generation
I need to generate a single pulse on two channels with precise timing to trigger lab equipment. Please see image below. I haven't found any examples with multiple channel pulse generation. Hardware:...
View ArticleMake a counter
HelloI would like to make a counter,but my professional knowledge is limited because I am just interesting in eletronic field. And I would like to ask that if CD4093( the CD4093 datasheet ) is suitable...
View ArticleCompatibility between 9361 and cDAQ-9174
Dear allI need some help as my brand new NI-9361 is considered as "unsupported module" with my NI cDAQ-9174. I am a bit worry because the 9361 line disappeared in the compatibility chart (it was 2 or 3...
View ArticleError 200452 when time delay is added to retriggerable pulse output
Requirement: Need to introduce a time-delay to retriggerable pulse output; so the LabVIEW example "Counter- Single Pulse Output.VI" was tried to generate retriggerable pulse outputs on Dev1/Ctr 1 with...
View ArticleSemi Period Measurement Skips First edge on some devices
I am working with a number of different DAQ devices for experiment control in a lab environment where we need to trigger hardware timed sequences off the 60Hz power cycle. We do this by pausing and...
View ArticleHow two synchronize two recording devices using a single DAQ?
Hi,I have some questions about how to synchronize audio and videorecording using a single DAQ device.In my setup I’m using two devices, one for videorecording (pointgrey camera fl3 u3 13s2m cs,...
View ArticleAstronics PXIe-2461 period measurement problem
Hello everyone, I use the Astronics PXIe-2461 Universal counter timer to measure phase shift of phase modulated signal (PM) that means one of two pulse change period in time periodaclly with out...
View ArticleCounterReader exception: "This is not valid for acquisitions without a buffer."
I am trying to trouble shoot a problem with counter reading that occurs only under some circumstances. If a certain sequence of actions happens in my software, running a multisample read on a...
View ArticleIncorrect encoder angular position by one pulse ( 1024ppr --> 0.35deg /pulse,...
Hello guys,I have some trouble to get pressure reading by every encoder pulse ( every 0.35 deg) using encoder.Currently, I am using quadratic encoder (A,B, and Z).I have two tasks. One is for angular...
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