├── .gitattributes
├── README.md
├── find_device.py
├── keithley_plotter.py
└── one_shot.py


/.gitattributes:
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1 | # Auto detect text files and perform LF normalization
2 | * text=auto
3 | 


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/README.md:
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1 | # keithley2700-tutorial
2 |  Python scripts for Keithley 2700 tutorial video 
3 |  To best use this set of code, first make sure to find the GPIB address of your device using the find_device.py
4 |  From there, you can then use the one_shot.py script to make a one shot measurement from the keithley 2700.
5 |  If everything is all good and working fine, use keithley_plotter.py as an example for live plotting.
6 |  
7 | 


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/find_device.py:
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1 | import pyvisa
2 | 
3 | print(pyvisa.ResourceManager().list_resources())
4 | 
5 | 


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/keithley_plotter.py:
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 1 | import pyvisa
 2 | import time
 3 | import matplotlib.pyplot as plt
 4 | 
 5 | 
 6 | # Initialize the keithley and create some useful variables
 7 | multimeter = pyvisa.ResourceManager().open_resource('GPIB0::1::INSTR')# Connect to the keithley and set it to a variable named multimeter.
 8 | multimeter.write(":ROUTe:CLOSe (@101)") # Set the keithley to measure channel 1 of card 1
 9 | multimeter.write(":SENSe:FUNCtion 'TEMPerature'") # Set the keithley to measure temperature.
10 | timeList = [] # Create an empty list to store time values in.
11 | temperatureList = [] # Create an empty list to store temperature values in.
12 | startTime = time.time() # Create a variable that holds the starting timestamp.
13 | 
14 | # Setup the plot 
15 | plt.figure(figsize=(10,10)) # Initialize a matplotlib figure
16 | plt.xlabel('Elapsed Time (s)', fontsize=24) # Create a label for the x axis and set the font size to 24pt
17 | plt.xticks(fontsize=18) # Set the font size of the x tick numbers to 18pt
18 | plt.ylabel('Temperature ($^\circ$C)', fontsize=24) # Create a label for the y axis and set the font size to 24pt
19 | plt.yticks(fontsize=18) # Set the font size of the y tick numbers to 18pt
20 | 
21 | 
22 | # Create a while loop that continuously measures and plots data from the keithley forever.
23 | while True:
24 |     temperatureReading = float(multimeter.query(':SENSe:DATA:FRESh?').split(',')[0][:-2]) # Read and process data from the keithley.
25 |     temperatureList.append(temperatureReading) # Append processed data to the temperature list
26 |     timeList.append(float(time.time() - startTime)) # Append time values to the time list
27 |     time.sleep(0.5) # Interval to wait between collecting data points.
28 |     plt.plot(timeList, temperatureList, color='blue', linewidth=10) # Plot the collected data with time on the x axis and temperature on the y axis.
29 |     plt.pause(0.01) # This command is required for live plotting. This allows the code to keep running while the plot is shown.
30 | 


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/one_shot.py:
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 1 | import pyvisa
 2 | 
 3 | multimeter = pyvisa.ResourceManager().open_resource('GPIB0::1::INSTR') # Connect to the keithley and set it to a variable named multimeter.
 4 | 
 5 | #multimeter.write(":ROUTe:CLOSe (@101)") # Set the keithley to measure channel 1 of card 1
 6 | 
 7 | multimeter.write(":SENSe:FUNCtion 'TEMPerature'") # Set the keithley to measure temperature
 8 | 
 9 | #print(multimeter.query(':SENSe:DATA:FRESh?')) # Collect the most recently measured data
10 | 
11 | multimeter.write(":ROUTe:OPEN:ALL") # Open all card channels and thereby set the keithley to measure the front panel inputs.
12 | 
13 | print(multimeter.query(':SENSe:DATA:FRESh?')) # Collect the most recently measured data


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