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Showing results for tags 'visa'.
Found 19 results
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Hi, I'm connecting to a Rigol DZ1000 Oscilloscope via USB and using the :DISP:DATA? ON,0,PNG command to grab a screenshot. Reading out the data in blocks of 65535 bytes until there is no more (see attached vi). This normally works fine but yesterday I was getting a timeout error. I fired u...
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I am experiencing numerous VISA Lock Errors (-1073807345) on resources I haven't explicitly locked. This is happening on TCPIP connections to keysight N6700 power supplies and keysight N5242 PNA fairly regularly. I have simultaneous loops in the application communicating to the different instr...
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Hey guys, Can you take a look at this? The only work around I found is to dynamically open the connection with an external VI to make it fail so the second time it works. If anyone has an instrument that communicate trough TCP-IP with VI, please try on your side with LabVIEW 2018 and...
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I wanted to cross post metux's discovery here asap, and have a separate discussion. Metux's original post: The recent Linux driver package introduces a CRITICAL security vulnerability: http://www.ni.com/download/ni-linux-device-drivers-2018/7664/en/ It adds addition...
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hi, I need to make an application , which has to send a hexa decimal data from labview to the protocol via RS232.I have sent a single data block(1Byte) and i was able to receive the acknowledgement properly. But if i send a 9 bytes of Data through VISA via RS232, I am not getting any ou...
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Hi We have an application where we need to have a custom PCIe board transfer data to the PC using DMA. We are able to get this to work using NI-VISA Driver Wizard for PXI/PCI board. The recommended approach is to have VISA allocate memory on the host (PC) and have the PCIe board write...
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I'm running a queue controlled multi-loop many master/many slave data parser (among other features), and gosh darn it if it isn't mostly working! However, one issue that I'm running into is an extremely un-reproducible error in the serial data read/write loop out to a USB Telegesis module. I can't...
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Name: List all VISA session opened Submitter: Benoit Submitted: 30 Jan 2016 Category: *Uncertified* LabVIEW Version: 2011License Type: BSD (Most common) This VI list all VISA session opened and allow you to close all of them. Some times when the GPIB stuck and the VI wont stop........
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Hello. I have a mesytec mscf-16 module and i want to control it using labview via usb. Using hyperterminal i can communicate with the module and send commands so the ftdi driver works fine. The problem is that i can't control the module using labiview. Using ni-max test panel if i send idn? comman...
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In my project i have 2 task (1).Read data of sensor (attached to arduino board) serially and display on LabVIEW. (2).Control output(just ON-OFF) pins of arduino using LabVIEW. So,for that i am using TAB in labview.created 2 TAB called Oscillospe and Input. If i first start Oscillos...
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Hi everyone, so we have a device for measurement & signal generation and want to make it accessible through VISA say by Ethernet / USB / Serial. Other than the VISA driver template and the SCPI parser that must be implemented on the device, does anyone offer a good starting point on how to make...
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Hi, I have several USB instruments (Agilent/Keysight optical power meters) which I can talk to via USB. To minimise the time "wasted" by transferring data between the instruments and the PC I would like to query them in parallel. Unfortunately, LabVIEW doesn't agree with that strategy and relia...
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I am working on an RT app and hardware that uses more than 50 USB devices connected via USB hubs to an NI rackmount computer. After a hard reboot of the rack mount computer, the USB devices and hubs take more than 5 minutes to enumerate. I am looking for a way to verify all the USB devices ha...
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Hi everyone, New on this site, new to Labview, new to RS232 and actually new to pretty much everything! Hope I'm not posting in the wrong section... I feel a bit out of place anyway to be posting among experts but well, for lack of a better place... So here's the context of my problems :...
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Hi All, This is my first post on LAVA, so here it goes: I am creating an application that involves reading data on two RS-422 serial ports. Everything was going just dandy until it was time to build my application into an executable. I've spent time debugging my issue and have been able to n... -
Kello everyone! I have some instruments which i controll over VISA. the software has two parts: one GUI running on a computer and the program running on the PXI to which the instruments are connected. I would like the user to be able to choose the GPIB address of each instrument on the GUI, so i... -
My machine have to send a sequence of 3 bytes per command via serial port. for example; |start byte=0xFF| |second byte = 0x00-0xFE| | third byte = 0x00-0xFE | which I have already done with it, my method is sending one byte per one byte in for-loop via serial port. The problem is if I would li... -
Hi there, This is my first posting on lava. A coworker pointed me here after I told him I had reached my limit trying to debug this hardware issue. I have a PMC device I am trying to test. The test plan calls for putting 2 of the devices on PMC-PCI adapter cards and installing them in a Windows PC,...
