Unable to acquire single point 12bit data @200KHz in Rtos.
I want to acquire single point 12 bit data @ 200Khz using PXIe 6535 DIO, PXIe 1072 chasis and 8820 controller in RT. Problem is I am unable to acquire data as triggered input. Loop execution time takes...
View ArticleMCP4922 - Controlling DAC w/ LabVIEW
Does anyone have experience controlling these sorts of chips with LabVIEW? I seem to be having issues when writing out the config and data bits to my chip. Every other oin has been tested and seems to...
View Articleoutput overshooting and undershooting problem of PCI-6534
Hi, I'm using the digital outputs from PCI-6534 to control varies devices, like shutters,CCD camera. But actually the output is not a clean TTL signal, several snapshootes are attached below.I also try...
View Articlepci resource pci-dio-96
I have inserted a PCI-DIO-96 in three different PCs riunning Windows XP. In all cases the Device Manager does not show resources allocated automatically to the card. It is recognised as being a "PCI...
View ArticleI can not access to the the FP1000
Hello I want to to ask yo the following I am using the Measurement Automation explorer 3.1 and I am trying to conect me to the FP 1000. through Port COM 1.I configured the port on the right way but...
View ArticleUSB-6000 MOSFET+Relay control
Hello! I have this USB-6000 unit which has only 3.3V 4mA digital output. I want to switch a relay by means of MOSFET but so fat the current/voltage capabilities has had no success. I am easily able to...
View ArticleGetting PCI-6250/SXCI-1349/SXCI-1000 to communicate
I have a system that is not seeing the SCXI-1000 chassis. MAX sees the PCI-6250, but nothing els. The SCXI-1000 config does not show the 1349 interface. How do I get it to be selectable? Since it does...
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what is writing to digital port
Hardware: NI PCI-MIO-16E "DEV1" connected to an SCB68. I have a Global Virtual Channel "KeyRun" assigned to Dev1/port0/line1 Within some VI in the project, there is something writing to that port/line...
View Articleni845x.dll installer error
I am trying to use an NI USB-8451 controlled by some Labview written (and proven to work) by a colleague. When I tried to run his code, I got an error saying I needed to install a dll: ni845x.dll.So, I...
View ArticleWhat are the set of NI instruments and software I would need to control a...
I need to be able to deliver solutions through a pinch valve system using a pulse protocol. This means the valve has to open with a certain delay and close after a specified time (square pulse). How...
View ArticleNI-8452 Stream Mode more than 64bits?
I hava an SPI ADC which I want to read using the stream API for high conversion rates (using the NI-8452) but want to read back all 7 ADC channels in one multi-read SPI command. The maximum number of...
View ArticleProblem - digital trigger edges slowing down on fast rotations
Hi, all. I have problem to figure out. I want to measure strain with two strain gages on 90 degrees (NI 9237 Half Bridge II) and I have motor with metal plate on it with 52 tooth (gear) to measure on...
View ArticleDigital output port is always zero
I'm new to DAQ with NI hardware (in my case the NI PCIe-6321 board) and so I tried some simple tasks. However, I fail with writing a "1"/high on a digital output port line. Neither my own C# code (see...
View Articleusb 6501
Hi, I have a NI USB 6501 and am tring to perform sequencing with it. SO the user can specify a recipe based on an array of task wherre each task ahs a start time and a duration and a TTL value. It...
View Article"error out" not showing up as an output in sub-vi
Hi Folks: This is probably more a basic LavView coding issue. I'm having a strange issue where Labview 13.0f2 is not presenting my "error out" sub vi as an output to continue my error bus chain. I...
View ArticleAllen Bradley PLC - No I/O Indicators?
Good afternoon, My system is running primarily on Allen Bradley (Rockwell Automation) brand products. I have been using the same equipment for a year and a half and have never encountered a problem...
View ArticleDigital output USB-6008 - optocoupler with 20mA
Hello,I want to use a USB-6008 to control a temperature chamber. Analog input/output and digital input is working fine. But I need an additional digital output and can not figure out, how to connect it...
View ArticleExternal Trigger Source For Digital Output
Hello All,I'm not sure if this question has been posted before, but I haven't found it. Also I am kind of new to LabVIEW as well.I have a NI cDAQ-9178 with an NI 9403 and an NI 9923. I also have a...
View Articledatasheet question
Hello, I am looking at the datasheet/manual for the NI 9219 module which is an analog input module. On page 4 (manual), it talks about mode input ranges and for voltage it is:+- 1V+- .125mV+-60Vetc......
View Articlesinking and sourcing inputs
Whats the application difference between sinking and sourcing inputs? I know that sinking inputs just provide a path to to ground for current, and sourcing inputs provide a path to the + end. I do not...
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