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Added a simple MSO68B example using tm_devices. (#64)
* tm_devices example for MSO6B * Update of the Main directory for tm_devices example. * Update to tm_devices example folder names. * simple typo fix * Updated some bad links in teh basic scopes area
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Examples/Oscilloscopes/BenchScopes/src/Ivi2MatlabDriverExample/README.md
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...copes/TekSeriesScopes_HighSpeedDigitizers/src/Measurements_tm_devices/README.md
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| # Get simple measurement using tm_devices | ||
| Original Attribution: Gayland P - Tektronix Applications | ||
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| This is a simple example using Tektronix tm_devices tools to connect to an oscilloscope by USB connection. This program finds the maximum peak to peak voltage value on a signal connected to Channel 1 of a 6 Series B oscilloscope. It runs the oscilloscope 10 times for 3 seconds at a time and publishes the results to a file in a C:\\Test directory. Very minor changes would be needed to use this script with a 5 Series, 4 series, or other 6 series oscilloscopes. | ||
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| For a description of tm_devices please go to https://pypi.org/project/tm-devices. | ||
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| This script uses numpy arrays, and assumes that the user has a version of VISA loaded on their PC that supports USB control of instrumentation, such as TekVISA, or NI-VISA. |
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...kSeriesScopes_HighSpeedDigitizers/src/Measurements_tm_devices/tm_devices_MSO6B_example.py
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| # This is an introductory python script originally written with pycharm IDE. This shows how to use tm_devices | ||
| # for a relatively realistic short automation routine. Its goal is to find the maximum peak to peak | ||
| # value of a signal on CH1 for a period of three seconds for 10 separate periods. | ||
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| # to use this script please create a folder under "C" drive called "Test" | ||
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| # This program uses tm_devices. see https://pypi.org/project/tm-devices/ for more details. | ||
| # Device Manager interacts with pyvisa (and if a third party VISA is installed pyvisa interacts | ||
| # with that). It has the routines that control instruments. | ||
| from tm_devices import DeviceManager | ||
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| # Now we import the specific drivers that control the individual instrument, in this case a B version 6-series | ||
| from tm_devices.drivers import MSO6B | ||
| # Import time so we can use time.sleep() | ||
| import time | ||
| # Import Numpy (https://pypi.org/project/numpy/) to use numpy's array tools | ||
| import numpy as np | ||
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| # set up initial values, including the numpy array. | ||
| i = 0 | ||
| NumberOfRuns = 10 | ||
| MaxPKtoPK = np.zeros(NumberOfRuns) | ||
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| # Set up and connect to scope and check its idn string to ensure we connected. verbose in the DeviceManager | ||
| # means you can see all commands going to instrument and all responses to queries which is useful for debug, or | ||
| # not. Here we chose "false" so that we do not print those out. | ||
| with DeviceManager(verbose=False) as device_manager: | ||
| scope: MSO6B = device_manager.add_scope("MSO68B-B025464", connection_type="USB" ) | ||
| print(scope.idn_string) | ||
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| # default the oscilloscope so that it is in a standard condition | ||
| scope.reset() | ||
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| # Run Autoset to get the signal set up on screen. Followed by OPC query to ensure it completes. | ||
| scope.commands.autoset.write("EXEC") | ||
| scope.commands.opc.query() | ||
| # Set up horizontal record length to 1 million points. | ||
| scope.commands.horizontal.mode.write("MANual") | ||
| scope.commands.horizontal.recordlength.write(1e6) | ||
| # Ad Meas1 as a PK2PK measurement and display all stats in the badge | ||
| # Then add a second Risetime measurement using a different method within tm_devices. | ||
| scope.add_new_measurement("MEAS1", "PK2PK", "CH1") | ||
| scope.commands.measurement.meas[1].displaystat.enable.write("ON") | ||
| scope.commands.measurement.addmeas.write("RISETIME") | ||
| scope.commands.measurement.meas[2].source.write("CH1") | ||
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| # stop the scope | ||
| scope.commands.acquire.state.write("OFF") | ||
| # This loop first clear the previous measurement values, starts the scope and runs it for 3 seconds, stops the | ||
| # scope. and then add the Maximum peak to peak measurement value to the numpy array. | ||
| while i < NumberOfRuns: | ||
| scope.commands.clear.write() | ||
| scope.commands.acquire.state.write("ON") | ||
| time.sleep(3) | ||
| scope.commands.acquire.state.write("OFF") | ||
| MaxPKtoPK[i] = scope.commands.measurement.meas[1].results.allacqs.maximum.query() | ||
| i = i+1 | ||
| # Create the output file in the folder "Test" and use a numpy command to save the data into it. | ||
| filename = "C:\\Test\\MaxAmp.txt" | ||
| np.savetxt(filename, MaxPKtoPK) | ||
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