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80 MHz timebase as counter source
I am translating a Traditional DAQ Counter application to DAQmx. The old hardware was a PXI-6602, the new hardware is a PXIe-6614. Both have 80 MHz clocks. They are very similar hardware devices....
View ArticlePhoton counting delay
Hi, I'm using LabVIEW 2020, PCI-6602, BNC-2121, Hamamatsu 6420 photon counting module, and a Texas Instruments DLP4500 digital micromirror device (DMD) as a structured light detection system. Light...
View ArticleDigital filtering on Gate for Linear Encoder
Hi All Using the C API for DAQmx 19.1 on a PCI-6601 I am trying to apply a digital filter on the gate input for my X1 counter task. Linear encoder channel is created using...
View ArticlePhoton counting delay
Hi, I'm using LabVIEW 2020, PCI-6602, BNC-2121, Hamamatsu 6420 photon counting module, and a Texas Instruments DLP4500 digital micromirror device (DMD) as a structured light detection system. Light...
View ArticleCounter output appearing on multiple PFI lines
I am trying to use the counter to output a digital pulse (continuous) on a select PFI channel. This is easy enough, but I am observing some strange behavior. If I select PFI0, then it outputs as...
View ArticlePhoton count synchronization
Hi, In my attempt to create a VI which synchronizes the image displayed on a second monitor with the photon counts from a photomultiplier module via an event structure, I've noticed that the photons...
View ArticleReset counts trigger
Hi, I've Constructed a VI which displays an image on a second screen and cycles through images via an event structure. I would like to generate a trigger upon completion of the loop which would be used...
View ArticleOnboard device memory overflow
I have a USB-6343, X series DAQ device with BNC termination that I am using to collect counts from an avalanche photodiode connected to the ctr1 channel in a counter task. I am timing the task using a...
View ArticleUsing NI 9205 or NI 9403 DIO module for encoder measurement
Hello, Is it possible to measure angular position by counting pulses from a quadrature encoder using NI DIO 9403 or NI 9205 modules coupled with cDAQ 9174. I do not have access to other modules which...
View ArticlecDAQ-9191 Synchronization
Hello, I have two NI-9191 cDaqs each with an NI-9234 modules and I would like to know how to synchronize both chassis so that I can simultaneously acquire data from them. I am currently using Matlab to...
View ArticleTDMS Write Function slowing loop
Hi, I'm counting edges of TTL pulses coming from a photon counting photomultiplier tube module on my PCI-6602. I'm trying to sample at 4 kHz, but at 2 kHz my consumer loop starts to lag behind. Without...
View ArticleSynchronize cDAQ-9174 with PXIe-1082?
Hi, I have a cDAQ-9174 using a ni-9401 module to read position of an angular encoder. I have a PXIe-1082 chassis with PXIe-6365 Multifunction I/O module reading other analog inputs. I want to...
View ArticleTimer - Air solenoid
Hello all, first post here "nice" to meet you; So, I have been working on learning more about labview over the past couple weeks and I thought that I might be able to use it to build a touchscreen...
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Using digital edge counting as a time source for a timed loop
Hi Friends, I have a USB 6002, a multifunctional device having analog output (AO) and counter input , and would like to use it as a time source (via edge counting) for a timed loop to avoid Windows OS...
View ArticleSimple DAQ to generate 2 external triggers
Hi! Please excuse my naïveté, I am new to all this!I'm looking for the simplest DAQ to generate two external TTL triggers for two cameras, at different frequencies (10 Hz and 200 Hz). Initially I was...
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Read counter in python
Hello i have this configuration in DAQ Express:How can i read the same value with python??
View ArticleSSI Encoder with NI USB
I'm a LabVIEW beginner. I have aplication with two absolute SSI 14bit encoders. I would like to measure an angular position with encoders, and use LabVIEW aplication on my PC. Could you halp me in...
View Articleread a counter in python
hello i have created a task the read the counterwith nidaqmx.Task() as task: task.ci_channels.add_ci_count_edges_chan('Dev1/ctr0', initial_count=0, edge=Edge.RISING,...
View ArticleSynchronizing analog output and counter input in USB-6211(OEM) using Python
Hi all, I am developing a python code to scan a laser beam over a transparent material and measure the transmitted intensity using a photodetector, which sends the intensity as counts. I am using two...
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Python frequency counter NI 9402
Hi all, I m trying to get support from NI services, but it seems that this is a complicated task. So, finally I leave here my question to see if anybody can help me. It is not a strange question, and I...
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