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143 lines
4.7 KiB
Python
143 lines
4.7 KiB
Python
""" =============================================================
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*** modified 2022 - four wire resistance mode
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*** Institut f. Konstruktionsrechnik, Eggert Jung
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============================================================= """
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""" ================================================================================
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*** Copyright 2019 Tektronix, Inc. ***
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*** See www.tek.com/sample-license for licensing terms. ***
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================================================================================ """
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"""
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====================================================================================================
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This example configures a series of channels within the 3706A mainframe for
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DCV measurement scanning. Additionally, a log file is created on a USB drive
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connected to the front port of the meter and writes the measurement information
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after each scan.
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====================================================================================================
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"""
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## channel.exclusiveclose(
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import socket
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import struct
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import math
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import time
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import numpy as np
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from matplotlib import pyplot
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echoCmd = 0
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def instrConnect(mySocket, myAddress, myPort, timeOut, doReset, doIdQuery):
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mySocket.connect((myAddress, myPort)) # input to connect must be a tuple
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mySocket.settimeout(timeOut)
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if doReset == 1:
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instrSend(mySocket, "reset()")
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if doIdQuery == 1:
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tmpId = instrQuery(mySocket, "*IDN?", 100)
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print(tmpId)
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return mySocket
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def instrDisconnect(mySocket):
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mySocket.close()
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return
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def instrSend(mySocket, cmd):
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if echoCmd == 1:
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print(cmd)
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cmd = "{0}\n".format(cmd)
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mySocket.send(cmd.encode())
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return
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def instrQuery(mySocket, cmd, rcvSize):
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instrSend(mySocket, cmd)
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time.sleep(0.1)
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return mySocket.recv(rcvSize).decode()
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def Write_Data(output_data_path, dataStr):
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# This function writes the floating point data to the
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# target file.
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#for f in floats:
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ofile = open(output_data_path, "a") # append the target data
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dataStr = "{0}".format(dataStr)
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ofile.write(dataStr)
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ofile.close() # Close the data file.
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return
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def Configure_Backplane(s):
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instrSend(s, "reset()")
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instrSend(s, "dmm.func = \"fourwireohms\"")
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#instrSend(s, "dmm.nplc = 0.1")
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instrSend(s, "dmm.autorange = dmm.OFF")
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instrSend(s, "dmm.range = 100")
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## crossover connection is made on backplane 3 & 4
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instrSend(s, 'channel.setbackplane("1001:1030", "1913")')
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instrSend(s, 'channel.setbackplane("1031:1060", "1924")')
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instrSend(s, 'channel.setbackplane("2001:2030", "2913")')
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instrSend(s, 'channel.setbackplane("2031:2060", "2924")')
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instrSend(s, 'channel.setbackplane("3001:3030", "3913")')
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instrSend(s, 'channel.setbackplane("3031:3060", "3924")')
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return
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def diff_4W_mess(s, ch1, ch2):
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instrSend(s, 'channel.exclusiveclose("{}")'.format(ch1))
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instrSend(s, 'channel.close("{}")'.format(ch2))
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#print(instrQuery(s, "print(dmm.measure())", 64)[:-1], end='\t')
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return float(instrQuery(s, "print(dmm.measure())", 64))
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""" ==============================================================================================================
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MAIN CODE STARTS HERE
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============================================================================================================== """
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ip_address = "192.168.0.53" # Place your instrument's IP address here.
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my_port = 5025
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output_data_path = time.strftime("data_%Y-%m-%d_%H-%M-%S.csv") # This is the output file that is created which
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# will hold your readings provided in ASCII
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# format in a text file.
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s = socket.socket() # Establish a TCP/IP socket object
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# Open the socket connection
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instrConnect(s, ip_address, my_port, 20000, 0, 0)
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t1 = time.time() # Start the timer...
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Configure_Backplane(s)
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a = np.zeros(shape=(90, 90))
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pyplot.ion()
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fig, ax = pyplot.subplots()
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axim = ax.imshow(a, interpolation='nearest', cmap='gray', vmin=0, vmax=30)
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x = 0
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y = 0
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print()
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for ch1 in [*range(1001, 1031)] + [*range(2001, 2031)] + [*range(3001, 3031)]:
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for ch2 in [*range(1031, 1061)] + [*range(2031, 2061)] + [*range(3031, 3061)]:
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a[x][y]=diff_4W_mess(s, ch1, ch2)
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axim.set_data(a)
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fig.canvas.flush_events()
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y+=1
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x+=1
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# Close the socket connection
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instrDisconnect(s)
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t2 = time.time()
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# Notify the user of completion and the data streaming rate achieved.
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print("done")
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print("Total Time Elapsed: {0:.3f} s".format(t2-t1))
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input("Press Enter to continue...")
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exit()
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