element in array to time format
Hello i am trying to convert a element in array to time format to plug into a build waveform. I tried a few functions but no luckthe data is coming from uart. If the data coming in is for example in...
View ArticleControl two devices with RS232 splitter
Dear all. I made a VI that control (a part from many other things) a PI stage and a Thorlab shutter. The problem is that both need an RS232 connection and my computer has only one port. I bought an...
View Article9206 connector analog input connector
have a bunch of 9206, well, need to get more wiring is not trivial wtih these connectors, have to stick in screw driver to get enogh slack to insert the wireshave to repeatly change the wires often...
View ArticleQuestions regarding building my first instrument control system
Hello, I have never built a control system from scratch before so I need some assistance in determining what kind of hardware I need to use. I have three instruments, which use combinations of BNC and...
View ArticleHow to acquire fast direct-current signal using Keithley 6485 using Rs-232
Keithley 6485 Picoammeter, DC signal (fA-pA), RS-232, Fast acquisition: reading per 0.01s I am new to instrument programming and Labview. I am trying to do fast current measurement at the speed of some...
View ArticleGPIB-ENET/100 does not show up in add GPIB Hardware Wizard (Scientific Linux 6)
Hi everyone, I am working with a GPIB-ENET/100 device on a Scientific Linux 6 (Red Hat derivative) machine. No matter what I try, the NI-488.2 'Add GPIB Hardware Wizard' does not find the device. My...
View ArticleGPL-incompatible module nikal.ko
With NI-VISA for Linux version 15.0.0f1 on openSUSE Leap 64 Bit 42.1.20151028, the following error occurs during installation: Warning: nikali post installation failed! /tmp/nikaliPostInstall.log...
View ArticleWhy data from WriteMeas Read instrument driver is not continueus
Hello Everyone,I have a challenge for you,My Labview code works prefectly communicating with motorized stage and a photometer (Konica Minolta CS100A), but read and write parts are not working smoothly,...
View ArticleUSB-8451 header file is missing function definitions to Get and Set Polling...
Not sure where to post this. There doesn't seem to be an I2C board. I'm using a NI USB-8451 device to write to an EEPROM. It sometimes gives an error that suggests I increase the ACK Polling...
View ArticleWriting different measurments to a PIC
I have been working with recieving serial data via uart to labview parsing that data to reconstruct a AC signal then doing analysis on that signal to get amp and phase. The phase is incorrect cause of...
View ArticleVISA and run time engine
I have two questions: 1. After installing an exe on a non-developer (i.e. no labview) machine with multiple runtime engines previously installed, is it possible to easily identify which run time...
View Articleproblem with bytes at port read in VISA
Hi guys,I'm trying to read data from device using usb-BT dongle. It creates the virtual port and read without problem. My problem is the device send packets of 428 bytes, inside of this block i have...
View ArticleGPIB instrument legacy Microlink 4000 using GPIB-USB-HS
Hello all, I'm dealing with three ancient data loggers, Microlink 4000, connected by GPIB and interfacing with my PC via GPIB-USB-HS.There are no drivers for the data loggers... Their primary addresses...
View ArticleHow can I control equipment from Excel VBA using NI-VISA GPIB and USB?
Firstly, apologies if this is discussed elsewhere, but I haven't been able to find it. I used to have a load of Excel macros that would control and read data from equipment over GPIB. However, for...
View ArticleMy code is not responsive to function generator
I am currently using an Agilent 33120A 15MHZ Function generator and when I change the parameters (amplitude, frequency, etc.), my code does not reflect the changes. What I am doing wrong?
View ArticleNI MAX not communicating with GPIB instrument
I have an issue with MAX. I have hooked multiple instruments to a GPIB -USB-HS. When I open MAX and go into Devices and Interface, I see the GPIB-USB-HS, but I don't get the "Scan for Instruments"...
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Lab::VISA installation using Windows 7
I am trying to install Lab::Visa using strawberry perl and I get the following error. What am I doing wrong? I am a novice to perl and Visa module. Any help is greatly appreciated. I tried following...
View ArticleHow to do request/response from the serial port communication
I have connected my laptop to the HW which is communicating through RS232 and i want to extract possible request/response from the port. For example: If i sendRequest: 3B 16 07 xx xx xx i would expect...
View Articlepololu jrk motor control
Hi I am working on a project where i need to control upto 6 12v brushed DC motors with built-in feedback potentiometers (2amp current draw) and 1 12v dc motor up to 10 amp current draw were i need to...
View Articlehow to acquire all TM from oscilloscope DPO7104 in a txt file ?
Hello,I would save TM from oscilloscope (rise time, fall time, Vhigh....) in a txt file.I work with a Tektronix DPO7104 but i don't konw how to acquire all the telemesures in txt file via Labview...
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