jangjae

I am currently required to store signals for one month from a real-time field operation. I need two sensors with a sampling rate of over 100kHz and two sensors with a sampling rate of 5kHz. Having previously asked a similar question, I followed the recommendation to set the Samples Per Channel to 8,000,000 for data collection. However, upon checking the data collection status after approximately two days, I discovered that the DAQ had ceased operation. Additionally, the error message was as follows: Error message: ULx Read (Analog 1D Wfm NChanNSamp)vi <ERR> Measurements: Samples in the buffer were overwritten before they could be read. To rectify this issue, it might help to read the data more frequently or to specify a fixed number of samples to read instead of attempting to read all available samples. I am eager to understand how I can resolve this issue to ensure uninterrupted data collection for a month. I plan to store the data in text files, saving data from the 100kHz sensors every three minutes and from the 5kHz sensors every five minutes. Additionally, I am including a photograph of the error code and my block diagram in hopes of receiving assistance. Your help would be immensely appreciated. These translations provide a clear understanding of the technical issue at hand and the assistance being sought. <Additionally, the device I plan to use for storing data in real-time over a month at a 100kHz sampling rate is the USB-2020, and for the 5kHz sampling rate, the device is the USB-1808X. Please take this into consideration.> DAQv3.vi

Our measurement settings are quite large, which leads to the data storage consuming a considerable amount of space. We need to conduct real-time measurements over a period of two months, and managing the storage capacity with these large data sets is proving to be a challenge. First of all, I sincerely appreciate the answers you have provided so far. However, I have some specific requirements that I still need to address: 1. I need to use 'Analog 1D Wfm' instead of 'Analog 2D DBL'. 2. Looking at the block diagram you provided, I noticed that 'sample per channel' is set to 10. However, due to the characteristics of our sensor, it needs to be set to 8,000,000. Also, the 'sampling rate' should be set to 200,000Hz, not 100 as shown in your diagram. 3. The block diagrams we have sent as examples have been adjusted for our actual measurements and are optimal settings, so we need to maintain these settings(DAQv3.vi, _qna.vi). 4. Lastly, it seems that the data is adjusted to save the measurements at desired intervals. However, I want to implement a method where only the measurements taken every 10 seconds for a duration of 1 minute, 60 minutes after the hour, are saved. In other words, I want to save data only for a duration of 1 minute every hour, and during this 1 minute, I want to save data 6 times for every 10 seconds. I would greatly appreciate any guidance or assistance in achieving this. I would be extremely grateful if you could really help me. Best regards, DAQv3.vi

Hello, I am currently working with a DAQ device(USB-1808X, USB-2020) from MCC and using LabVIEW to create a block diagram for data storage. My specific requirement is to save data every hour, 10 times, for a duration of 1 minute each time. In essence, if I measure for 5 hours, I should have 50 sets of data, each 1 minute long. However, I'm encountering difficulties in designing the block diagram to meet this specific requirement. Can anyone provide some guidance or assistance on how to set this up? I would greatly appreciate any help! Best regards, _qna.vi

Dear Measurement Computing (MCC) Support Team, I am reaching out because I am facing some difficulties in proficiently using the LabVIEW program, particularly in achieving the functionality I desire with the USB-2020 DAQ device. Specifically, I would like to operate both channels of the USB-2020 independently and simultaneously, but I find it challenging to implement this in LabVIEW. Additionally, I tried to follow the example provided earlier, and while I was able to drive a single channel successfully, I'm struggling to display the results of both channels simultaneously in one window. I am seeking your guidance and support to help me achieve the following: Simultaneous Independent Operation: I want to control both channels (Channel 0 and Channel 1) of the USB-2020 DAQ device independently and at the same time. Displaying Results in One Window: After running the LabVIEW program, I would like to view the data from both channels simultaneously in a single LabVIEW window. I would greatly appreciate it if you could provide me with step-by-step instructions or a LabVIEW example that demonstrates how to accomplish the above tasks with the USB-2020 DAQ device. Thank you very much for your time and assistance. I look forward to your valuable guidance to resolve these challenges. Best regards,

While I am excited about the capabilities of the USB-2020, I must admit that I am not very proficient in using the LabVIEW program. As a result, I am seeking assistance in obtaining the LabVIEW Software Development Kit (SDK) files and any LabVIEW example materials that are available for the USB-2020 DAQ device. Having access to the SDK and example materials would greatly help me understand the device's functionalities and enable me to develop applications tailored to my specific needs. I kindly request that you provide me with the necessary LabVIEW SDK files and any relevant LabVIEW example documentation for the USB-2020. If there are any specific installation instructions or additional resources that could aid in my understanding, please include them as well. Thank you very much for your time and attention to this matter. I am looking forward to your prompt and positive response. Best regards,