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learn:instrumentation:tutorials:analog-discovery-studio-data-logger [2019/07/15 20:00] – Arthur Brown | learn:instrumentation:tutorials:analog-discovery-studio-data-logger [2021/05/14 23:07] (current) – ↷ Links adapted because of a move operation Arthur Brown | ||
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- | ======Using the Data Logger ====== | + | ======Using the Data Logger |
- | {{: | + | <WRAP round important 660px> |
- | + | This guide has been replaced by [[test-and-measurement: | |
- | ===== Introduction ===== | + | |
- | This guide explains the use of the //Logger// instrument in WaveForms. This instrument is used to log potentially large amounts of analog voltage data over time. | + | |
- | ---- | + | |
- | ===== Prerequisites ===== | + | |
- | * A Digilent Test & Measurement Device with Analog Input and Output Channels | + | |
- | * A Computer with WaveForms Software Installed | + | |
- | + | ||
- | ---- | + | |
- | + | ||
- | ====1. Opening the Logger==== | + | |
- | <WRAP group> | + | |
- | <WRAP column half> | + | |
- | === 1.1 === | + | |
- | Plug in the Test & Measurement Device, then start WaveForms | + | |
- | + | ||
- | If no device is connected | + | |
- | + | ||
- | **Note:** //" | + | |
- | + | ||
- | **Note:** //The Device Manager can be opened by clicking on the " | + | |
</ | </ | ||
- | <WRAP column half> | ||
- | {{ : | ||
- | </ | ||
- | </ | ||
- | ---- | ||
- | <WRAP group>< | ||
- | === 1.2 === | ||
- | Once the Welcome page loads, in the instrument panel at the left side of the window, click on the **Logger** button to open the //Data Logger// instrument. | ||
- | </ | ||
- | {{ : | ||
- | </ | ||
- | ---- | ||
- | <WRAP group> | ||
- | <WRAP column half> | ||
- | ===1.3=== | ||
- | Once the //Logger// instrument opens, the window contains the data plot on the right side and the default data measurements listed on the left side. | ||
- | </ | ||
- | <WRAP column half> | ||
- | {{ : | ||
- | </ | ||
- | </ | ||
- | ---- | ||
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- | ====2. Using the Logger==== | ||
- | //This section walks through setting up the //Logger// to capture data from the Scope channels.// | ||
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- | <WRAP group> | ||
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- | ===2.1 Hardware Setup=== | ||
- | Connect the Test & Measurement Device' | ||
- | </ | ||
- | <WRAP column half> | ||
- | {{ : | ||
- | </ | ||
- | </ | ||
- | ---- | ||
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- | <WRAP group> | ||
- | <WRAP column half> | ||
- | ===2.2 Software Setup=== | ||
- | In WaveForms' | ||
- | |||
- | For more detail on how to use the //Wavegen// instrument, please see the [[learn: | ||
- | |||
- | Return to the //Logger// instrument by clicking on its tab in the bar at the top of the screen. | ||
- | |||
- | </ | ||
- | <WRAP column half> | ||
- | {{ : | ||
- | </ | ||
- | </ | ||
- | ---- | ||
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- | <WRAP group> | ||
- | <WRAP column half> | ||
- | ===2.3 Run the Logger=== | ||
- | Click the Run button in the control bar near the top of the window to begin capturing data on the analog input channels (//Scope// channels). Captured data will appear in the plot pane as a set of colored lines. Each colored line corresponds to one of the default measurements listed on the left side of the window. For example: the yellow line is the measurement named C1 DC, meaning the DC voltage of the channel one input. Since the signal going into channel one is AC and centered about 0 volts, the data this measurement is collecting should be theoretically zero, but will appear as a voltage in the low mV range next to the measurement name. | ||
- | </ | ||
- | <WRAP column half> | ||
- | {{ : | ||
- | </ | ||
- | </ | ||
- | ---- | ||
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- | <WRAP group> | ||
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- | ===2.4 Plot Plane Axes=== | ||
- | By default, measurement 1 (named C1 DC) is selected and therefore the vertical axis will automatically display an appropriate range for viewing that particular logged signal data in the same color associated with that data (yellow for C1 DC). | ||
- | </ | ||
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- | {{ : | ||
- | </ | ||
- | </ | ||
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- | <WRAP group> | ||
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- | Selecting a different measurement in the list to the left of the plot plane (for example, measurement 2) will adjust the vertical axis such that the selected measurement will be displayed along with all the other desired measurements with an appropriate range for viewing the logged signal data magnitude and change its color to reflect the currently selected data (light blue for measurement 2). | ||
- | </ | ||
- | <WRAP column half> | ||
- | {{ : | ||
- | </ | ||
- | </ | ||
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- | <WRAP group> | ||
- | <WRAP column half> | ||
- | To manually set the range for a measurement: | ||
- | - Click the Utilities ({{reference: | ||
- | - Uncheck the //Auto// box | ||
- | - Enter desired //Top// and //Bottom// values | ||
- | </ | ||
- | <WRAP column half> | ||
- | {{ : | ||
- | {{ : | ||
- | {{ : | ||
- | </ | ||
- | </ | ||
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- | The bottom axis default is time in seconds with a minute long window where zero seconds is on the right side of the bottom axis and sixty seconds is on the left. The default sampling frequency is one second, which means that the displayed data will update once every second. Increase or decrease this displayed time window using the **History** drop-down menu, located at the top of the data plot. | ||
- | </ | ||
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- | {{ : | ||
- | </ | ||
- | </ | ||
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- | <WRAP group> | ||
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- | Increase or decrease sampling frequency using the **Update** drop-down menu. | ||
- | </ | ||
- | <WRAP column half> | ||
- | {{ : | ||
- | </ | ||
- | </ | ||
- | ---- | ||
- | |||
- | ====3. Logger User Interface Overview==== | ||
- | //This section walks through the wide variety of controls and features present in the //Logger// instrument.// | ||
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- | <WRAP group> | ||
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- | ===3.1 Control Buttons=== | ||
- | As seen in Section 2, the control bar near the top of the window can be used to stop and start the capturing of data from the analog input pins. In addition to the Run/Stop button, the Single button can be used to start data acquisition. In the //Logger// window, these buttons both start the data acquisition but a second click on the Single button will simply restart the acquisition whereas the Run button will now display Stop and a second click will stop the data acquisition. These options can also be accessed in the **Control** drop-down menu located above the control bar. | ||
- | </ | ||
- | <WRAP column half> | ||
- | {{ : | ||
- | </ | ||
- | </ | ||
- | ---- | ||
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- | <WRAP group> | ||
- | <WRAP column half> | ||
- | ===3.2 Data Export=== | ||
- | To export data from the //Logger// tool, click the Export ({{learn: | ||
- | </ | ||
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- | </ | ||
- | </ | ||
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- | <WRAP group> | ||
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- | The Data tab allows for export of a .csv file containing all of the current data points in the plot plane with comments, headers, and labels as default or an image of the current plot plane. Remove comments, headers, and/or labels by unchecking the corresponding box located in the upper left section of this window. | ||
- | </ | ||
- | <WRAP column half> | ||
- | {{ : | ||
- | </ | ||
- | </ | ||
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- | <WRAP group> | ||
- | <WRAP column half> | ||
- | The Image tab allows for saving of an image of the //Logger// tool interface including the plot plane, measurements list, and the control bar with the option of displaying the device, serial number, and time that the image was taken. To change the background color of the plot for printing, see Plot Utilities in section 3.10. | ||
- | |||
- | </ | ||
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- | {{ : | ||
- | </ | ||
- | </ | ||
- | ---- | ||
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- | <WRAP group> | ||
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- | ===3.3 Measurement Maximum/ | ||
- | To the left of the Single acquisition button described in section 3.1 is a drop-down menu that says " | ||
- | </ | ||
- | <WRAP column half> | ||
- | {{ : | ||
- | </ | ||
- | </ | ||
- | ---- | ||
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- | <WRAP group>< | ||
- | ===3.4 Measurements Pane=== | ||
- | The Measurements Pane, on the left side of the screen, displays a table containing measurements of each of the signals captured on the analog input channels. Each measurement corresponds to a line in the plot pane. The Measurements Pane is used to view a summary of measurements currently being tracked, as well as to define what measurements are to be tracked as data is logged. | ||
- | </ | ||
- | {{ : | ||
- | </ | ||
- | ---- | ||
- | <WRAP group> | ||
- | <WRAP column half> | ||
- | ===3.4.1 Measurements - Add and Edit (Basic)== | ||
- | To edit an existing measurement, | ||
- | ?nolink}}) (to the left of the " | ||
- | |||
- | Alternatively, | ||
- | |||
- | The Item tab contains commonly used, predefined measurements for channel 1 and channel 2: DC voltage, True RMS voltage, and RMS voltage. These are the default measurements that are displayed when opening the //Logger// instrument, but if they were to be deleted they can be quickly added again from here. | ||
- | </ | ||
- | {{ : | ||
- | </ | ||
- | <WRAP group>< | ||
- | The Function tab by default displays the script editor window. It can be used to manually type a mathematical function or click on a one of the desired functions displayed below the //Insert// checkbox to add them to measurement function. To hide the built in functions, uncheck the //Insert// box. | ||
- | |||
- | (**NOTE:** //all trigonometric functions operate on radian values, not degrees// | ||
- | |||
- | Click the Evaluate Script button ({{learn: | ||
- | |||
- | To change the color of the measurements, | ||
- | </ | ||
- | {{ : | ||
- | </ | ||
- | ---- | ||
- | <WRAP group>< | ||
- | ===3.4.2 Measurements - Add and Edit (Advanced)== | ||
- | Within the Function tab of //Add Measurements//, | ||
- | in the script editor window. The Debug button launches a script debugger, which provides an environment to step through complex scripts to ensure proper functionality, | ||
- | </ | ||
- | {{ : | ||
- | </ | ||
- | ---- | ||
- | <WRAP group> | ||
- | <WRAP column half> | ||
- | ===3.4.3 Measurements - Remove=== | ||
- | The far left side of the control bar has a green plus ({{learn: | ||
- | </ | ||
- | <WRAP column half> | ||
- | {{ : | ||
- | </ | ||
- | </ | ||
- | ---- | ||
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- | <WRAP group> | ||
- | <WRAP column half> | ||
- | ===3.8 Sampling Utilities=== | ||
- | To the right of the **Update** drop-down menu on the control bar is a Utilities Icon ({{learn: | ||
- | </ | ||
- | <WRAP column half> | ||
- | {{ : | ||
- | </ | ||
- | </ | ||
- | ---- | ||
- | |||
- | <WRAP group> | ||
- | <WRAP column half> | ||
- | ===3.9 Plot Plane Cursors=== | ||
- | To add a vertical bar cursor to the plot plane, click the Add Cursor ({{learn: | ||
- | </ | ||
- | <WRAP column half> | ||
- | {{ : | ||
- | </ | ||
- | </ | ||
- | ---- | ||
- | <WRAP group> | ||
- | <WRAP column half> | ||
- | ===3.9 Quick Measure Tools=== | ||
- | Additional cursor types are available by clicking either the Free ({{learn: | ||
- | |||
- | Click the Free icon once and the mouse cursor will display the time and magnitude values of the selected measurement as it hovers over the plot plane. Click on the plot plane to place a cursor point at the desired position, then drag the mouse horizontally and/or vertically to place a differential cursor point. Click again to replace the original cursor point and so on. Click the Free icon again to exit this mode. | ||
- | |||
- | Click the Vertical icon once and the mouse will display a vertical cursor on the plot plane at the cursor position. Click on the plot plane to place the vertical cursor and display a differential cursor, then click again to place the differential vertical cursor. Click again to replace the original vertical cursor and so on. Click the Vertical icon again to exit this cursor mode. | ||
- | </ | ||
- | <WRAP column half> | ||
- | {{ : | ||
- | </ | ||
- | </ | ||
- | ---- | ||
- | |||
- | <WRAP group> | ||
- | <WRAP column half> | ||
- | ===3.10 Plot Utilities=== | ||
- | The Utilities Icon ({{learn: | ||
- | </ | ||
- | <WRAP column half> | ||
- | {{ : | ||
- | </ | ||
- | </ | ||
- | ---- | ||
- | |||
- | <WRAP group> | ||
- | <WRAP column half> | ||
- | ===3.11 Other Plot Plane Options=== | ||
- | To clear the plot plane of all data without removing measurements, | ||
- | </ | ||
- | <WRAP column half> | ||
- | {{ : | ||
- | </ | ||
- | </ | ||
- | |||
- | ---- | ||
- | ==== Next Steps ==== | ||
- | |||
- | For more guides on how to use the Digilent Test & Measurement Device, return to the device' | ||
- | |||
- | If voltage values seen in the //Logger// are significantly different from the expected voltage output of the // | ||
- | |||
- | For more information on WaveForms visit the [[reference: | ||
- | |||
- | For technical support, please visit the [[https:// | ||
- | {{tag>analog-discovery-studio tutorial}} | + | {{tag>to-be-removed}} |