Hi, I just got PDA36A2(BNC connector), which is a swiched gain photo detector from Thorlab. Can anyone suggest which DAQ I should choose to be compatible with it?
(BTW: someone just suggest that I use NI 9215. But should't I still need to buy a DAQ for using with it as NI 9215 is just a voltage input module?)
Thanks
James
Hello LabVIEW Community,
I am having some difficulty with data acquisition for a load cell. It uses a mV/V output which I am not familiar with. I understand that the signal output will be X.XX mV per volt of the excitation voltage.
Below is the pinout diagram.
The load cell is ~2.00 mV/V of the supply voltage at the full force. Also pictured below is the calibtation sheet.
My initial plan was to measure the output voltage using a high resolution voltage output card, NI9207. I figured I would be able to read the small mV output voltages well enough with this. However, in actual practice this is not working to get me good data.
Is there another method I should be trying with this? Some other cards I have are NI 9236, NI 9234, and NI 9214.
How can I verify the load cell is reading correctly?
Thanks in advance for the help.
-Josh
Hello,
I need assistance from NI engineer or personnel to answer very specific questions.
We are using your NI DAQ Model: USB-6361 Part Number: 781442-01. We are powering it with your power cord Part Number: 763000-01. This power cord inlet has a two screws to make sure it does not disconnect from the NI DAQ.
We want to buy a second NI DAQ. This one, we will power with a battery to use off-grid. We need answers to some questions so that we can choose the right rechargeable battery and to safely operate the DAQ.
What is the voltage range for this DAQ? It says on the manual 11-30V. But if I choose 12V and 3A like the power cable we have, what is the +/- for the voltage?
What is the peak (burst) current %?
Any safety considerations? For example, do I need to stop the DAQ from operating if the battery level goes down beyond a certain voltage?
What is the name of the power inlet that has the two screws? We want to buy a similar cable which would connect the battery and the DAQ.
Thank you,
Fouad
Currently we are trying to to control the ARO® Premair™ 4-Way, 2-position, direct-acting solenoid air control valve (P211SS-024-D) using LabVIEW. The goal is to control the valve and have it switch at varying frequencies. After setting it up, and cascaded up three channels in series on the NI 9269 Module to supply a voltage up to 30 V, the valve did not flip. I wanted to ensure that the valve was not the problem, so I connected 24 V battery supply and it worked fine.
I have a suspicion that the NI 9269 does not meet the power requirement of the valve. If it is not possible to power the valve using the NI 9269, a would a relay and external power supply be necessary? If that is the case, where would.
I am looking for any and all insight on this. Any help is very much appreciated.
Dear all,
I have a sbRIO 9631 board, however, my NI MAX do not find board. How to fix it?
Thanks!
Hello, I want to use this card DT9814 in conjunction with LABVIEW, I have installed the NI-DAQMx driver and the LABVIEW program on a laptop without good communication between the card and LABVIEW , according to The procedure to recognize the card is with the help of NI-DAQMx but the device is not recognized, following programs I have:
Laptop: Windows 7 operating system, 32 bits.
Labview: 2017
Ni-DAQMx: Version 8.5
Will you have any correct recommendation or driver?
Thank you
Hardware
NI 9205
NI 9263
Hello -
I am trying to measure the output voltage from the pressure sensor and scale it to units of mmHg and read in the result in NI MAX. The sensor outputs 0.2584 mV/psi/Volt excitation, so if my math is correct, using a 5V excitation means 1.292 mV/psi. I want the result in units of mmHg, meaning an output of 0.024983 mV/mmHg. I am working in physiological ranges (<150 mmHg) and this is a very small output, is it even possible to get an accurate reading with the NI 9205's +/- 200mV range?
In NI MAX, I have created a task that provides 5V excitation to the sensor from the NI 9263. A different task records the input from the NI 9205, but even with custom scaling I am unable to get an accurate reading.
NI-USB-6221 DAQ卡是排针接口，对于端口的定义直观，在实际使用中很不方便,请问配哪种型号的转换板或开关板比较合适?
I'm using an X series card to do some triggered analog input acquisition, and am using the Start.Retriggerable property to do repeated Finite measurements.
I can't find documentation on what happens if a new trigger comes in while the previous read is still happening. I would assume the trigger is ignored, but I don't see it explicitly stated anywhere I can find it.
For example, say I'm sampling at 1 kHz and want 2000 samples (for 2 seconds of data capture) and I have a trigger that fires every 750 ms. Do the extra triggers that happen after the acquisition get ignored (my assumption), restart the data acquisition (doubtful), buffer somehow (also doubtful).... etc? I'd like to get confirmation that I'm assuming it works the way I think it does 
@NIglobal ,We have used USB 6210 & USB 6001 card for data acquisition & DI/Do/Encoder in our Machines. We are facing problem with Card disconnection with Windows PC leading to unnecessary breakdowns for 03 Years at customer site. Your local team are not supporting . Pls assist
So I'm doing the online course on using NI-DAQmx; however since I don't have the hardware I use the simulation guide provided here http://www.ni.com/tutorial/3698/en/#toc2. But when I test it using a VI, it doesn't work as intended (as attached in picture); in the picture since the analog output frequency is 500 Hz I should see a peak at 500 Hz in the frequency domain plot, but this isn't the case in the picture. Anyone know what's wrong? Maybe I'm using the simulation incorrectly?
Mr/Miss,
你好，昨天做了些测试。
利用带Queue的DAQ采集程序，通过更改前端输出的数据流大小进行测试。
连续数据采集模式，
1. 更改DAQ的Buffer（64M或128M），每次采集数据量（2，4，8M），采集数据；
2. 改变数据流大小，在36.4M Sample时正常采样；在40M sample时就会出现 -2000361错无。
按照6537的带宽与硬件指标所示，应该能达到50M的采样率。
但实际只测到36.4M的采样率，请提供指导，如何优化提高性能。
或其他建议！
Hi Guys,
I've checked multiple threads here but still without an explicit answer to this question: is it possible to control my DAQ card USB6008 from a remote computer with Python?
The thing is, I 've got many instruments connected to the same computer. I use python to synthesis and control them. Most of them are oscilloscope and other big instruments which are controlled using the library Pyvisa. With pyvisa, I can turn on the NI-visa and control them using TCP-IP protocols, via IP addresses.
However this seems not possible for a DAQ card, or specifically, USB6008. Instead of pyvisa, it is controlled using library nidaqmx, in which I don't find a TCP-IP option. What I read from nidaqmx document (nidaqmx) is that the address is always 'Dev0' or so, something indicating a USB or other locally connected device.
So question: is it possible to connect USB6008 DAQ with IP address, from a remote computer?
Thank you.
I have a cDAQ chassis with five modules. I have written a large VI to control it and acquire data but the time stamps seemed a bit strange so I have put together a simple VI to examine the problem.
It sets up one channel with 2 Hz sampling rate and displays the time stamps when DAQmx Read returns a waveform.
The task is set to start immediately but the first Read gets no points, even if one waits ?? seconds between task Start and Read.
t0 in "data 2" is 0.5 sec (1 sample) after "Time 1" i.e. the first Read seems to triggered the data acquisition (not the Task Start vi). The time difference between Time 1 and Time 2 is 5 seconds, as one would expect from the Wait(ms) timer.
Increasing Wait_1 to 10 seconds gives 20 samples from the second Read i.e. the first sample should be at 16:50:00.729 - 10 seconds = 16:49:50.729, NOT the 16:49:56.22 timestamp in data 2. It seems to have started acquiring data half-way through the initial 10 second wait.
The difference between the data2 and data 3 timestamps seems OK (10 seconds, for the 20 samples in data2) but I cannot see why the first point in data 3 (t0 = 16:50:06.22) should be later than the time of the Read request, Time 3 = 16:50:05.738. Surely the data in the buffer should start 9 or 10 sample periods before Time 3, rather than 0.48 seconds later?
In my application, a few seconds does not matter much - it is more of an annoyance.
Thanks
Roger
Hi NI sale manager,
How can I get a quote on DAQ system parts?
Sincerely
Shujuan
Good morning,
I'm trying to use my cDAQ-9172 chassis with Labview 2019 but it does not work, the problem that shows is:
Status Code: -209852
The specified device is no longer supported within the NI-DAQmx API.
Visit ni.com/info and enter the Info Code: Cseriesdoc
I did that and figured out that the version DAQmx required was up to the 17.5.
So I deleted the DAQmx19 folder in the Programfiles directory and I'm trying to replace it with the version 17.5 but I get this error,
Could you please help me out? Thank you.
Best regards,
Marco
Hello NI Community,
I have an NI cDAQ-9185 running on NI MAX 17.1.1. I am connected to my laptop with an ethernet cable. My computer recognizes the device, but the device cannot be added. I get Add Device -201251 error.
I have uninstalled and reinstalled NI MAX. The cDAQ was working just last week with this version of MAX. LabVIEW 2016 is also installed on the laptop.
I have been searching the forums for a solution and have not been able to find one. Any recommendations would be much appreciated. See attached photos of errors.
Thanks,
Josh
Hello,
I am currently setting up a portable multi-function DAQ system using USB 6255 (80 AI, 1.25 MS/s, 24 DIO, 2 AO).
1) Could you kindly suggest me a suitable laptop for the current DAQ, considering heating and latency issues? My experiments generally run for 2 to 3 hours.
2) The description says that its a USB 2.0 port (480Mbps) for communication. Would there be latency issues when multiple channels are used? The manual says that the sampling would be about 750 KSps with multiple channel usage. (http://www.ni.com/pdf/manuals/375215c.pdf)
3) Are there USB DAQ boards where we could systematically set the sampling rate of individual channels?
Hi All
I'm trying to use a USB-6210 DAQ to read 14 single ended channels at 200 hz. I've run into two very strange problems (one may be a symptom of the other?)
First, channels 5, 6, and 7 all show a reflection of channel 13. When channel 13 reads 2 volts, 5, 6, and 7 read -2 volts. Attached is a snapshot of my code. When I use the express VI rather than the blocks below, this problem does not occur, but the express VI has too much overhead for the code I'm trying to write. I've probed my transducers with an oscilloscope and they aren't reporting these negative voltages either. Disconnecting terminals 5, 6, and 7 does not stop them from reporting these negative voltages.
My second problem has to do with the sample rate of this code. I've wired 200hz to the rate input on the timing Vi, but in the configuration shown I measure the loop running at 50hz with occasional spikes of 100hz. I thought that had something to do with the "2" wired to "samples per channel", but I'm unable to wire in anything lower than 2. I'm not sure if that's a symptom of the same issue that I'm seeing above, or a different problem entirely.
Any help would be appreciated. Please let me know if there's any other information I should post
Hi, apologies if this is a silly question.
I'm using the USB-6363 BNC unit, and have it connected to an amplifier. The DAQ sends commands on AO0 and receives signals on AI 0-4.
It appears that the AOs are not precisely calibrated to zero. The amplifier I'm using (for electrophysiology) is a DC-coupled input, so the DAQ must be correctly calibrated so that zero volts
really correspond to zero.
When I connect the DAQ AO to the amplifier, it detects a small voltage.
Could anyone guide me through what I should do? I have previously disconnected all connections and run a self-calibration in NI Device Monitor.
Thanks in advance.
