Hello all,
We use PCI 6515/6528 frequently and end up having to make massive jumpers across the terminal block in order to have consistency and less wiring.
ie All PX.Y + will be 24V or PX.Y - will be GND.
To do this in design is easy, but it becomes a pain in the *** for the technicians to jump all these. Does anyone have a better idea how to do this? We asked Phoenix Contact and they shrugged.
Thanks in advance.
Hello,
In my setup, I have 3 niHSDIO PXIe 6555. For a test, I need to use one device to generate a stimulus waveform. With the other devices, I only do acquisition. During the acquisitions I would like to do a hardware comparison.
I tried to adapt the CVI examples relative to hardware comparison using HWS files as stimulus and response.
How do I configure my acquisitions devices? It seems that to download a file into the device it needs a generation session. However I do not generate anything
Do I really need to create a generation session especially to download my datas?
regards
Hi,
Could someone suggest a solution and NI card to sample 96 inputs with a 5us pulse. PCIe would be preferred. The test setup would consist of stimulating the unit under test (UUT) and then sampling the UUTs 96 outputs to look for appropriate 5us pulse outputs. The objective is just to see that the UUT output changed state when commanded to.
Hi all,
This is my first post, so bear with me if I don't add everything needed to answer this question.
I am using a cRIO (9074) in FPGA mode, along with a NI 9401 Digital I/O c-series and trying to output a square wave. This will then be sent to an external signal generator, which will boost the signal voltage so that the square wave can be used to trigger a plasma source (set-up to trigger on rising edge based on the external signal generator output). I have two questions that should help me complete this, one hardware and one software.
Hardware:
I am unfamiliar using the DIO / COM / NC pinout used in the NI 9401 (see pinout in attached manual, http://www.ni.com/pdf/manuals/374068g.pdf). I currently have my output wired to Pin 1 (DIO0) and pin 14 (COM). My understanding is that this will allow me to use DIO0 only. I have also ensure that DIO 0-3 are set to "output". Can you verify this is the correct pinout for receiving a digital output from DIO0? I am right now not seeing the signal at all on an oscilloscope, but realize the order of the two wires will be important in the future. Brownie points if you can also help me better understand the DIO / COM / NC trio, and what this is commonly used for.
Software:
In the attached VI, the "Control loop" contains a signal generator connected to the DIO0 output. I use "Plasma On?" in the GUI, and have verified that it is activating the "true" case. I should expect this to output the desired square wave, but have viewed nothing but noise on an oscilloscope.
I have alternatively seen physically setting the DIO to true and false, such as in the turbine example NI provides (www.ni.com/pdf/products/us/fullcriodevguide.pdf , pg 11, see picture). If there isn't an issue on the hardware side, can you shed any light why I am not getting a readable signal here?
Thanks so much, happy to provide more as needed
My set up is as follows:
Comp1======USB-6509-CP======CP-100 I/O Connector Block
I want to be able to make a program in Visual Studios 2017 that will send a signal from one of the screw terminal pinouts to be received by another similar set up (wired together of course). Is there a way to do send such a signal without using DAQmx? Or am I dead in the water because Measure Studios doesn't support VS 2017 yet?
Hello,
I have a NI9159 with some C-Series modules installed and I’d like to use the Distributed System Manager to read from its DIs and write to DOs on the fly, for testing purposes; I understand that I should be using this tool from https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z000000P7gtSAC&l=en-US .
After having connected the 9159 through an MXI cable to a PCIe-8361 mounted in a Windows System with LabVIEW installed, I can find the chassis under “My Systems” of DSM as “RIO1”; however, I can’t see any of the modules installed, so there is nothing I can check or control.
Am I missing something? Should I be able to use this tool for my purpose?
Thanks in advance!
Hi all,
I'm trying to drive a DS92LV16 16-bit Bus LVDS Serializer/Deserializer chip using any NI FPGA I have my hands on. The problem is that this chip needs as a minimum a 50 MHz clock. My FPGA boards all have 40 MHz built-in clock, and when I use a derived 100 MHz clock to generate a 50 MHz digital output, the signal comes out weak. What is mean is the oscilloscope is showing a peak-peak amplitude of less than 1 Volt when running at 50 MHz. When I drive a 4 MHz clock through a digital I/O pin I get nice peak-peak signals around the 3.3 V needed to drive CMOS logic.
Can I use the myRIO-1900, sbRIO-9602, or PXI-7811R to do this? Can newer hardware help? If so what models would work? Or can I use a buffer chip to precondition the signal for driving hardware?
Thanks!
I have a situation where I have multiple applications sharing the ports of a pcie 6509. This works correctly for static dio, However, when I set up a change detection, I can only set up on one application at a time, in spite of addressing a different port on each application. Is this a feature or is there a way to do this? I am interfacing using:
Daqmx 18.6
Measurement Studio
C#
Visual Studio 2017
thanks, Derek Hopkins
We have been using 6025 PCI card for many years but it has since gone end-of-life. The product page recommends NI PCIe-6321 X Series board. My question is if there is an upgrade path for the 68 pin connector. We have a custom manufactured I/O panel that interfaces with the 68 pin connector that ideally we would like to continue using for a new card.
TIA.
Hi,
I'm working on developing seismic digitizer so, we trying to configure the NI-9229 to match the required specifications.
Please, I wanna to know the NI-9229 sensitivity (what's the relation between counts per volt) in order to calculate the system sensitivity after connecting seismometer ( sensor for measuring seismic wave).
Kindly, download the attached picture for the current configuration. Moreover, what is the corresponding sensitivity in case of changing the voltage input range (V_peak to peak).
Great Thanks
I have a load. The voltage on it is less than 10 V. Due to its small electrical resistance, the current on it is over 2,000 A.
Can I use NI 9205 to measure the voltage on this load?
Hi all.
I am building my own communication message protocol and I am looking for NI device or HW to output voltages of 0s (<2.5V) and 1s (>2.5V up to 5V) at speed of 1 micro-sec per bit. Lets say 1 = a transition from 0 (holding for 0.5 micro-sec long) to 1 (holding for another 0.5 micro-sec long) to make the one bit = 1 micro-sec.
I have a USB-6001 device, but if I use DIO or AO channels, I can only switch between 0s and 1s every 1 msec, which is slow. Even if I have the switching done in a for-loop using NI-DAQmx software package. I am using Visual Studio C++ for my src.
Anyone has any thoughts of what NI device i can use? or maybe I should use something different than Visual Studio?
thanks
Hello,
I'm looking for a PXIe or PCIe card that can provide at least 8 TTL digital outputs. Any 4 of these TTL digital outputs will need to be synchronized in an arbitrary/programmable way (i.e., separated by specified delays). Need said delays to be programmable and accurate to within +/- 100nSec. Anyone have an idea or a recommendation?
Thanks
Hey,
I have been doing a current measurement system, which uses one or more DAQs to measure current using shunt resistors.
I wanted to calculate (simplified) the resolution of the system and ran into the following sentence.
Current measurement guide says: "you should use the smallest value resistor possible because this creates the smallest interference with the existing circuit. However, smaller resistances create smaller voltage drops, so you must make a compromise between resolution and circuit interference."
Question is how does resistor size (value) affect resolution?
Because if you have a DAQ e.g. NI 9238 that has 24 bit ADC and +-500 mV range, isn't the resolution always the same: 1/2^24 = ~60nV, as long as the voltage drop doesn't go below 60 nV?
Currently I am building a production level test bench which can handle a large quantity of devices under test.
I am looking for an NI device which can measure the current/power consumption from multiple units (all the same device).
I currently am using a modified power cable that I have connected to a power supply to get the current/voltage readings from each unit, but I'd like to be able to take this data and integrate it into some existing LabView test stand code hence the search for an NI DAQ device.
My idea is currently to add a 0.1 ohm resistor in series to a portion of the power cable in order to measure the voltage drop and in turn get the current reading that is in-line to my device. I'm trying to avoid having to connecting an NI device in series to measure the current as I'd like interfere with the signal across the cable as little as possible (hence using a 0.1 ohm resistor). Therefore I'm trying to find a solution that can effectively get the voltage off the 0.1 ohm resistor.
My expected voltage draw from my device is ~5V and the expected current during full operation is ~110mA.
Do any of you have any suggestions on an NI Device that would be able to perform this task? I am also willing to modify the design if there is possibly a more common NI device solution for this.
Hallo everyone,
i use right now the device USB-6259, and wanna synchronize AO with DO. I connected the Ctr0-Sample-Clock with the Timing-Funktion of AO.
My task is: DO with 1MHz, and AO with 1KHz, and both synchronized.
Problem is: i just can use the same rate for AO and DO, because when i change the rate of AO, what i wanna output is changed.
Question: can i use the same sample clock and diff. sample rate? or i shloud my VI change?
Thanks for answer,
Best Wishes
I need my NI device (PCIe-6363) to lock onto an external 10 MHz signal. I understand I can do this via the RefClkSrc/RefClkRate properties of the relevant tasks. I got that to work well enough.
How can I select the logic family for the clock source terminal? AFAICT, DAQmxSetDILogicFamily is not the right way to go. I do not want to select the family for a given channel. The reference clock is not a channel property, it is a task property.
Thanks for any hints.
Pol
Dear All
I am using GigE camera and VBAI for vision inspection. If I am using one script its change the attribute of another script. How is this possible? Please share any document from where I can conclude and convince s my client.
Thank You.
I am connecting a photon counting head through SCB-68A with 6612. My questions are:
1. The output of the photon counting head is TTL, which digital DIO termials should I connect to on the SCB-68A, P or PFI? What is the difference?
2. The photon counting head output need a 50 ohm impedance. What is the standard way of adding this impedance? Should I use a 50 ohm BNC terminator before SCB-68A?
Hope someone could help me here. Many Thanks!
Alex
I would like to know if it is possible to purchase a 6036E I/O board and how much does it cost. I am in Bologna, who is your local representative?
Sincerely yours
Enrico G. Campari
