Cours:Oscillogbf

banc de mesure  : 1 scope DS1074 + 1gbf DG822

le script (basique ...) qui gère le tout :

---

#!/bin/bash

IPSCOPE=192.168.1.111

freq=100

while true; do
      # 1 sinus ampl=5V, offset nul, dephasage nul
      ./dg822_write.py ":sour1:appl:harm $freq,5,0,0"
      sleep 2
      # demande un AUTo mode au scope
      lxi scpi -a $IPSCOPE "AUT"
      sleep 5
      let "freq += 100"
      done

---

les commandes python :

---

#!/usr/bin/python3

import sys
import pyvisa
rm=pyvisa.ResourceManager()
inst=rm.open_resource('USB0::6833::1603::DG8A231301537::0::INSTR')

print("commande = ",sys.argv[1])
commande=sys.argv[1]

inst.write(commande)

python et Qt

import sys
import pyvisa

from PySide2 import QtCore, QtGui, QtWidgets
from PySide2.QtWidgets import QApplication, QWidget, QFileDialog, QPushButton
from PySide2.QtUiTools import QUiLoader


def appui_bouton():
    print("Appui sur le bouton")
    print(inst.query('*IDN?'))


loader = QUiLoader()
app = QtWidgets.QApplication(sys.argv)
window = loader.load("form.ui", None)
window.my_push_button = window.findChild(QPushButton, "pushButton_2")
window.show()

window.my_push_button.clicked.connect(appui_bouton)

materiel=pyvisa.ResourceManager()
print(materiel.list_resources())
inst=materiel.open_resource('TCPIP::10.98.35.144::INSTR')

app.exec_()

liens

• https://pyvisa.readthedocs.io/en/latest/introduction/communication.html
• https://connect.ed-diamond.com/GNU-Linux-Magazine/glmf-124/controle-d-instruments-scientifiques-les-protocoles-gpib-vxi11-et-usbtmc
• https://iosignal.fi/wp-content/uploads/DG800_ProgrammingGuide_EN.pdf
• https://github.com/lxi-tools/lxi-tools