Set Pause Trigger while using DAQmxConnectTerms
Hi all,I am wondering if I can set pause trigger on the connected terminal? I am using "DAQmxConnectTerms" to connect two PFI lines, and getting reversed pulses by feeding in an external pulse source....
View ArticleConnect all grounds together internally NI 6555
Hi everyone, I am currently using the NI 6555 and since I need to use 20 pins it makes a lot of connections and it is a big mess. I saw this...
View Article"Timeout expired before operation could complete" while using NI-9423 in Matlab
Hello,I'm trying to read data from Digital Module NI-9423 installed in a CompactDAQ chassis cDAQ-9191. I have simple photoelectric sensor connected to NI-9423. I'm running following comands in Matlab...
View ArticleWhich driver (compatible several LINUX distributions) for PCI-6528?
Hello, I have to use the PCI 6528 on LINUX and I need a driver compatible with more LINUX distributions (Debian, Redhat, Madriva, Suze). On NI site I didn't find it.
View ArticleTTL interfacing to 6514
I have a PXI-6514 and would like to know if it can act as a direct TTL input card with no external power supply. The user guide doesn't really make it clear if this is a supported configuration. I'm...
View ArticleCalibration of a digital module?
Hi, I was looking at calibration procedures for a couple of NI boards, among which a few are digital. For those I haven't found any calibration procedure. Is it because I should consider the digital...
View Articlemultiple calls to DAQmxWriteDigitalU32
I need to write digital lines with a long initial pattern, followed by faster pattern. To accomplish this, I first set sample clock timing to slow (1 Hz), and write data using DAQmxWriteDigitalU32....
View Articlemultiple write operations in a task synchronized with trigger
My goal is to write digital patterns, first a long lasting setup pattern is written, and then a faster burst of pattern is written. I also need to synchronize this task with other actions (for example,...
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OK to put in 5V TTL into a LVTTL devices
Hi all, I'm using an NI 9402 (spec PDF here) in a cRIO which says it has LVTTL input (low voltage TTL, seems like 'high' is 3.3V) but maximum input voltage is 5.5V. Would it hurt to use a 'standard'...
View ArticleUsing PFI pin to generate PWM Signal
There is application where I need to generate 5 PWM Signals from my USB 6343. The device has only two counters, which means I can only generate two PWM signals.My major concern is that, can I use any...
View ArticleDigital Output to Motion Controller
Greetings, I'm using the digital output from a NI-9401 to provide input to a motion controller to enable preprogrammed moves like stop, start, and motion profile. There is a sequence required by the...
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Physical trigger for a pulsed UV Laser
I am currently working with the NI PCIe-6259 card which is connected to a BNC-2110 board. The goal would be to control a pulsed UV-Laser which emits in the range between 10-1000 Hz. Therefore I need a...
View ArticlePXIe-6570 connectors (VHCDI)
I use a 68-Pin, Right-Angle VHDCI Connector, NI PN 778914-01 with a PXIe-6570 Digital I/O card. The through hole pins from this connector are very fine pitch, about 0.05". This stresses the PCB and is...
View ArticleHow can i read DI states if task timing is Change Detection and no change...
How can i read the di port lines after Start Task without closing and re-opening the task if Task Timing is Change Detection and no change states of lines? For example it is necessary to get the...
View ArticleHardware trigger problem with NI PCIe 6535b
Hello everybody, I have been confronting a problem with the PCIe 6535b DIO working in slave mode and want your help. I notice that when the card works in slave mode (i.e., I use a function generator to...
View ArticleNI 9482 minimum current rating
Hello,I have an application with two signals to be switched:1.2-1.8A 18V<1mA 3,3V (logic input with a 10k pull-down).I would like to use a single device for both signals and NI 9482 meets the...
View ArticleVHDCI adapter
I have a NI 6535 PCIe and 1 meter VHDCI cable that I would like to connect to some custom hardware, however I have the following wiring problems:There are very few mating connectors for this cable (I...
View ArticleError 200294 and 200621
Hi, My application is to be able to switch writing AO from single analog to finite analog signal (in the form of waveform) using the usb6001. Mode Setup and Stop write single analog Mode Run = write...
View ArticleMaximum frequency to PXIe-7856R RDIO
Hello, I am using digital I/O from PXI-7856R on its RDIO connector, which is rated to output 80 MHz maximum in the datasheet. I have tried to output 50 MHz and it looks OK using the SHC68-C68-RDIO2...
View ArticleControl digital output using nidaqmx in python
Hello I am new to the combination of python and NI Daqmx. I managed to downlaod all needed packages/libraries and want to controll 3 digital outputs using python.I am aware that the page...
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