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Questions tagged [gpib]

The *general purpose interface bus* (GPIB), also known as *IEEE-488*, is a standard short range digital communication bus. It is used in the test & measurement industry to control the equipment.

The general purpose interface bus (GPIB), also known as IEEE-488, is a standard short range digital communication bus. It is used in the test & measurement industry to control the equipment.

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Labview VISA timeout, aborting issue

I am developing a program to remotely access the multimeter through GPIB. I am using visa read function to obtain measurement values and convert string of values to numerical values. At proper Visa timeout setting, program is able to execute without…
Rokki balboa
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Generate waveform via GPIB in CAPL

I have a simulation that generates a waveform using a Power Supply Controlled using a GPIB interface. The problem with this is that the waveform frequency is limited by the speed of the PC/Power Supply response, since it generates each point by a…
PySerial Killer
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SCPI Commands VB.net displaying values within a loop

I am sending SCPI commands via GPIB-USB to a signal generator. I am sending a command to change the frequency, and this command is looped so that the frequency keeps on changing until the loop completes. This is successful. I am also sending a…
user40320
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How to programatically retrieve trace data from an E5071C with SCPI commands?

I am working with an Agilent E5071C VNA and am trying to retrieve trace data from the machine. Unlike the docs for other VNAs, I've found the doc for the E5071C to be much harder to follow. What I am trying to do is select a trace for a particular…
pavuxun
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SCPI Command VB.net negative integer to string error

In VB.net, I am sending SCPI commands via GPIB-to-USB to an agilent/keysight device. I am using this sample to write data to instruments. https://www.keysight.com/main/editorial.jspx?cc=BR&lc=por&ckey=492255&nid=-33170.1090751.08&id=492255 Here is a…
user40320
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LabVIEW (Connected to instruments via PCI-GPIB ) to Study Diode Characteristics

I am new to LabVIEW. I wish to plot IV, CV curve (characteristics) of a diode. Can somebody help me with the code. I have instruments such as HP 6611c (DC power supply) and HP 34401A (Multimeter) and LabVIEW 8.5. I want to use this instruments to…
nk134
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Understanding Perl Script for GPIB Interface

I am new to the perl and python. As a part of my job currently I am asked to convert the perl script to python. The purpose of this script is to automate the task of the magnum tester and parametric analyzer. Is any of you able to understand what…
ibrahim rupawala
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LabVIEW and Keithley 2635A - Unable to read data

I'm using LabVIEW and its VISA capabilities to control a Keithley 2635A source meter. Whenever I try to identify the device, it works just fine, both in reading and writing. viWRITE(*IDN?) /* VISA subVI to send the command to the machine */ viREAD…
Enzo
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python gpib vna IEEE-754 64-bit

I need help, I convert a program written in HPBASIC to python a VNA network analyzer. Whose data format is: Data Transfer Format: FMB Select IEEE-754 64-bit data transfer format. Binary Data Transfer Message Format : MSB MODE: Byte Count Byte Count…
apach
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Decoding Byte/Bits to Binary

I am using a Prologix GPIB-USB adaptor in a LISTEN only mode to decipher communication between two equipments (Semiconductor related namely Tester and Prober). I am able to decode most of the information as stated in the Manual , But unable to…
Ashesh Nair
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LabVIEW driver, block diagrams not showing up

I installed the driver for the Keithley 6485. However, the block diagrams do not show up after the install. There is a KE6485 folder in inst.lib, but the LabVIEW files are in LabVIEW library files. Unlocking them as individual files does not change…
user1543042
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Why is a part of my Python code interpreted diffently when I add a seemingly unrelated part?

Some background: I'm implementing a GUI to interact with equipment via GPIB. The issue arises in this method: from tkinter import * from tkinter import ttk import visa #PyVisa Package. pyvisa.readthedocs.io from time import sleep import numpy as np…
B. Bush
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"No such device" error using pyvisa with pyvisa-py backend

I'm trying to set up pyvisa with Python backend rm=ResourceManager('@py'). When I launch rm.list_resources() I receive the following error: libgpib: error locking board mutex! Traceback (most recent call last): File "", line 1, in…
Frankmtl
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How to trigger measurements in Pyvisa?

I have a question concerning pyvisa, a Python Library for GPIB communication. My old HP 9825 program for a HP 5342A Microwave counter should be replaced by Python. How can I translate the trigger command to the Pyvisa interface? 9825 program: 0: wrt…
P. Egli
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C# Programming Unisource 4100 GPIB DMM

I am trying to read voltage measurements from my Unisource 4100 GPIB DMM. I know I can connect to the device because I get appropriate responses with the commands '*RST' and '*IDN?', however I cannot get any responses with other commands such as…
Danyon Chu
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