USB-6501 maximum number of tasks?
I have an application that has quite a few single input/outputs and a counter. The tasks are created in the beginning for the I/O and the task is created later in the code. What I recently observed is...
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cDAQ sample rate
Hello everyone, I'm using a cDAQ 9174 with a 9401 module to output a finite sequence at a specific rate to trigger some devices. However, the actual sample rate seems to differ from the expected rate.I...
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Strange Output of PCI-6289 DO
I'm using Python(nidaqmx package) to control phi-6289. I want to generate a digital pulse of given length on port 0, line 0 of PCI-6289, but I get some really strange results on the oscilloscope.My...
View ArticleHow to use the NI 9206 digital output?
Hi, I have a WLS 9163 with NI 9206 and i need to use the digital output, but i can't see this output port in MAX (version 5.6), only analog inputs. NI 9206 have one digital output but how use it? Thanks
View Article8 PWM signals with 9401
Hello, I am looking into producing 8 PWM signals using an NI-9401 in a cDAQ-9174. Ideally each PWM signal would be able to have a different duty cycle, but run at the same frequency (25kHz). From what...
View ArticleProblem Regarding Sine PWM
I am using a NI9401 in Crio 9067 to produce sine PWM signal which will be fed into an inverter. The problem is that the output PWM signal is of 2.2V while i need the output voltage to be around 5V for...
View ArticlePYTHON - NI9401 - sending two different PWM through two different DO at the...
Hello averyone !So I have two different PWM and I'd like to send one through one DO of my ni9401, and the other one through another DO of my NI9401 (and read the first one with one DI and the other one...
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NI9401 module: compatability with SENT (digital communication protocol):...
Good day, BackgroundI am planning on using cRIO platform to decode a SENT signal (position sensor) and drive our product's motor while recording various analog input data. This is to replace an...
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Question about the operation between sinking type output and sinking type...
Hi all, I have NI 9478, NI 9474 and NI 9426 module. I have tested the operation by connecting each other. 9478 is a sinking output module, and 9474 is a sourcing output module. 9426 is a sourcing input...
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Dynamic digital output
Hi all, I am using a CompactRIO and am trying to dynamically control output data for an automatic test sequence, for example I want to turn on and off outputs for a certain length of time automatically...
View ArticleLabVIEW with DAQmx ==> USB-6509 ==> SCB-100 in DIO/passthrough mode: Signals...
Hi, I am using the NI DAQmx VI's in LabVIEW to write to and read from a circuit board for testing purposes. The hardware setup is the USB-6509 with SCB-100 in DIO/passthrough mode. The USB-6509 is...
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VirtualBench - digital RS232
Dear all, I want to decode RS232 digital data by VirtualBench 16. Unfortunately in Digital menu are only I2C, Parallel and SPI communications. Is there any possibility to add also RS232?Thank youRadek
View Articlesegnale PWM
Goodmorning,I'm quite new in the NI community and it's the first time that I use a NI usb-6002.I need to generate a PWM signal by using Labview to control an electric engine (it's an engine for drones...
View Article> Fill With Value" feature">Digital Waveform Editor "Fill >> Fill With Value" feature
Hi, I'm trying to figure out whether I'm using the Digital Waveform Editor V3.0 "fill with value" feature in the correct way. I have tried with both compare and drive signals, when I enter a value...
View ArticleHow to use digital output in elvis (1st generation)
Dear Expert,Currently I'm still using old version of NI Elvis. The problem is, I was trying to connect the push button from labview to real LED which are available on the NI Elvis board. As usual, I...
View ArticleDrive strength of NI8452 USB interface
I want to know the push pull drive current capability of SPI MOSI and MISO DIO lines of NI8452?. Is there any pullup resistor being used on SPI MOSI and MISO?. Can you please specify the PUSHUP/PULL...
View ArticleHSDIO 6555 hardware comparison with acquisition delay
Hello!I am developping a Labwindows /CVI automatic testMy goal is to simulate a burst of digital signal ( around 100KHz) and acquire it behind my DUT. I have to check that the signal is received within...
View ArticleUse PFI pins as DIO in Simulink/MATLAB
Hi thereWe are using PCI-6221 I/O module connected to a NI SCB 68A. We try to read in/out digital signals from and to Simulink. For the screw terminals P0.0 to P0.7 we get a signal, since we need...
View ArticleUSB-6509/PCI-6509
For the USB-6509 and PCI-6509 ... I need to write to discrete outputs at an interval of less than 100 microseconds. Can either or both of these products support the required speed?Thanks!
View ArticleHelp with time delay between subsequent DAQmx Write commands...Switching...
Hello, I am hoping someone can help point me in the right direction.. I have a 9401 module that I am using to write some high/low signals on each of the 8 lines. The VI creates a channel and writes a...
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