I'm trying to test a system that has a 4-wire RTD input, but I want to be able to just simulate this input.
If it was two-wires, it's straightforward enough, because I can just drive a suitable voltage into the wires.
But I don't know what to do with the other leads that I guess are used to compensate for the lengths of the leads? (I've read about the 4-wire measurement system).
I'm worried that if I don't use these, I won't get a very accurate input into the system under test
Hello,
in a product specification it is mentioned the following :
"Check if datasignal is present at LVDS+/LVDS-
Signal should have the following waveform (channel 2: LVDS+ // channel 3: LVDS-):"
so my purpose is to be able to captur the wave form present at pins LVDS+ and LVDS- and compare it with this image :
is there any pxi instrument that could do this comparaison ? and if yes is there any c# code to control the provided instrument and captur the image as png or jpg
many thanks.
I am using the niRFSG Allocate Arb waveform.vi to bring in a 6G waveform file.
I am getting errors such as: total memory of all waveforms exceeds the allocated amount of memory on the FPGA.
Is there a way to adjust the FPGA memory on the PXI 5646 to accommodate the 6G waveform data file?
Here is a setup
I am trying to simulate a PXIe-4080 Digital Multimeter in MAX. I go to Devices and Interfaces->create new-> Simulated NI-DAQmx Device or Modular Instrument. When i look under Digital Multimeters the 4070 is there but no 4080. Anyone know how to get that installed I am currently running LV 2015sp1 and installed the NI-DMM updates so i have MAX Version 16.0.0f0
Thanks
I am an undergraduate research student in Mechanical Engineering. I am working to create a measurement system which I will be running through an NI PXIe- 1086 DAQ unit. I require an MRI compatible Displacement sensor for my project. I would like to use the MR303 (Fiberoptic) Linear encoder (http://micronor.com/product/mr303/) and retrieve the displacement data using my DAQ device. The sales rep at Micronor said that I would need to purchase their MR302-2 OEM Controller for MR30X Series Incremental Encoder (http://micronor.com/product/mr302-2/) to be able to process the signal into my DAQ unit.
My question is would I require the MR302-2 Controller or would my DAQ unit be able to process and control my sensor or would my DAQ device be able to take over the role of the the MR302-2 OEM Controller??
I am new to the world of Data Acquisition and Control Systems being an undergrad, so any assistance you could offer would be great.
Thank you.
Hello, I am trying to access the TCXO oscillator signal of my PXI-6682H card by routing it to clkout. I am able to connect the "Oscillator" to clkout, but it does not appear to be disciplined to GPS.
I have a separate Trimble Thunderbolt generating a 10 MHz signal, and when I view them on an oscilloscope, it's clear that the two are not sync'd. A 1 MHz clock I generate on PFI2, is synchronized to the Trimble Thunderbolt's 10 MHz output.
This page PXI_CLK10 Disciplining and Synchronization to a Time Reference Across Multiple PXIe Chassis describes the ability to route the TCXO oscillator signal out of CLKOUT for a 6683H, and implies that this oscillator signal is disciplined by my selected Time Reference. Does this also apply for a PXI-6682H?
Demonstration VI attached. When I ran this code on a PXI-6683H, it did produce a GPS-disciplined oscillator signal. Is the behavior for the PXI-6682H expected?
Thanks,
Greg
Hi, how do I use .ConfigureChannels("0") to configure multiple AWG 5421 PXI cards using Visual Basic?
I tried ("0,1,2") but it does not work.
Hello,
I am trying to calibrate PXIe-4353 modules. It is currently being used to read temperature values from thermocouples (J-Type).
In the calibration guide for PXIe-4353, it is mentioned that a calibrating accessory CAL-4353 is required to change the calibration values of PXIe-4353 and the method mentioned is to use a voltage/resistance calibrator to send in reference voltage and a reference resistance to the CAL-4353 connected to PXIe-4353 and verify and , if required , change the the calibration constants.
We currently do not have a voltage/resistance calibrator but instead have a temperature calibrator (Martel PTC-8010). The input reference temperature from the PTC-8010 goes through the PXIe-4353 can be read in the system.
Is there a method to calibrate/adjust the calibration constants of PXIe-4353 with just the temperature reference.
Any help would be greatly appreciated.
Thanks and Regards 
Hi,
I have a PXIe-1082 chassis, with an PXIe-8108 embedded controller which controls a PXIe-6363 (X Series DAQ multi-IO), PXI-4071 (DMM), PXI-2530b switch matrix, PXI-4110 (power supply).
I need to transport this guy on a regular basis. I think the pelican line of cases (www.pelican.com) are quite suitable. My question is in regard to the foam. The default foam provided is not conductive and so ESD is not prevented. Will the NI system described handle this, or do I need to protect the whole unit from ESD? What have others done?
The picture shows the chassis (with all the cards on the left) the other pockets are for adapters and cabling
Hi,
I have a PXIe-1085 chassis connected to a Dell Precision T3600 via a PXIe-8381 MXI link and i am only able to see the PXIe-8381 in MAX.
I have tried a number of things based on other posts in this forum, but nothing has worked so far.
This is what i have tried;
So i currently have an empty chassis, except the PXIe-8381 card, connected to my PC, but i can't see it in MAX!
Any suggestions would be much appreciated.
Cheers
Chris
Hi everyone,
I have a PXI system which contains module 8821 (embedded controller) and 4138 SMU. The PXI system has been changed to boot with Windows. I was able to remote desktop to the PXI system and develop some working SMU codes on it.
I would like to use this system as a device which is to be connected to a host PC.
What would be the best way to go about it? Thank you
Hi!
Our PXIe-5450 is giving us a couple of error messages. The error codes are -239101 and -239100. The first says "Internal Hardware Error occurred in MiG Hardware". The second one says "error at niFgen Initiate generation".
This is PXIe-5450 is housed in a PXIe-1075 chassis, together with another PXIe-5450. Both are managed by a PXIe-8130 (also housed in the same chassis). The second 5450 is not giving any problem and working fine.
Any suggestions on what the problem is and how to solve this? Thanks!
Hi,
We are designing our STS with T1 configuration. I have many questions on the maximum power deliverable per each peripheral slot of PXIe-1085.
1. What is the maximum power system slot consumes when all the slots in the chassis are populated?
2. We have 2 SMUs, 5 power supplies and 10 digital cards, are there any limitations to allocate slots?
3. Is the max power deliverable calculated on slot basis or whole chassis?
4. Please explain the attached figure, and how it affects slot allocation.
Thanks & Regards,
Alekhya
Hello All
I am new to Labview and a beginner has not worked a lot with FPGA modules.
I need to setup a Automated Test using Labview FPGA.
I am using a Climate chamber with a Ethernet Connection.
Any help, all informations are most welcome.
Many Thanks in Advance
Best Regards
My NI support contract expired, so I was hoping someone could do a sanity check on a pretty simple system I've layed out before I renew it and go to a FAE. It's been awhile since I dabbled in this stuff.
I have an application where I want to test, say, a 5x5 matrix of electrical conductors for opens and shorts. My idea is to drive a voltage (say, 10V) on the first conductor in the X dimension. Then, check each additional X conductor using a DMM to check for 0V (no shorts). Then, I want to check each Y conductor to verify they are getting 10V (no opens). I'll then step through driving 10V on each additional X conductor, verifying no shorts to the other X conductors.
I'll then swap the process around: drive the first conductor in the Y dimension, check for 10V at the other Y conductors to detect shorts. If my testing above passed, I'll already know I don't have any opens in the Y dimension, so I can stop there.
I've done a crude layout in Word using some PXI components that I think will get the job done. The PXI-2527 would run in two-wire mode (it would actually give me 16 channels, so technically I suppose I could hook both the X and Y conductors to it, but my actual matrix is much larger, so disregard for now).
Any thoughts, corrections, or simplifications are welcome.
I'm currently working on interfacing some custom hardware to an NI PXIe-6739, and I was hoping to develop a better understanding of how the grounds on the card are referenced to each other. From what I can tell, the grounds are all connected, as there is a common AO GND pin, as well as the dedicated ground pins for each AO bank. My question is whether the dedicated ground pins are connected via a plane, or if they are connected via traces? I've done some research on both the 6739 datasheet and the user manual and I haven't found anything, however I could have missed something as the user manual is a pretty large document. Thanks in advance.
I saw this issue while developing code. The device I'm testing has a fan controller that outputs a pwm signal and expects a tach signal back that looks like a square wave. I send a command to the fan controller to turn on, and then using the PXI-4461 as an AWG, I supply a slow square wave so that the fan controller locks on and doesn't change it's pwm duty cycle. I then measure the duty cycle multiple times over a second to make sure it is locked on. This test worked just fine until I went to work on a different rack with a different configuration. The only difference was the 4461 and 4070 were right next to each other on the same bus in the PXIe-1085 chassis.
My question is, can instruments reset other instruments if they are on the same bus?
PXIe-8840 officially supports only 8GB RAM, however, 16GB modules are now available such as the Crucial CT204864BF160B for instance. Can somebody confirm that PXIe-8840 can run reliably with 16GB module installed? If, yes then can you please share the module type?
Thank you,
Petr
In the manual, the step asks us to open a DAQmx calibration session on your device.
I am unsure how this is done..
The next step is to Call the DAQmx Connect SC Express Calibration Accessory Channels VI. Configure the CAL-4353 by setting the connection to _tc_calibration and the physical channels to Dev1/ai0:31.
is this done in LabVIEW or in NI MAX?
could anyone help me out with this.
Thanks in advance.
Hi,
The user manual of my PXIe-1082DC states that I should clean the fan filter located in the filter retainer at the back of the PXI . I checked the back of the PXI and found the air filter retainer empty . I was wondering if a fan filter should have been included with the PXIe chassis or if they are purchased separately.
Thanks for your help.
