Using the Oscilloscope

Introduction

Oscilloscopes are used to capture and analyze analog signals. This guide explains the use of the WaveForms' Oscilloscope instrument. This instrument is also referred to as the Scope in WaveForms.


Prerequisites

Guide

1. Opening the Scope

1.1

Plug in the Test and Measurement Device, then start WaveForms and make sure the device is connected.

If no device is connected to the host computer when WaveForms launches, the Device Manager will be launched. Make sure that the device is plugged in and turned on, at which point it will appear in the Device Manager's device list (1). Click on the device in the list to select it, then click on the buffer size (2). Click the Select button (3) to close the Device Manager.

Note: “DEMO” devices are also listed, which allow the user to use WaveForms and create projects without a physical device.

Note: The Device Manager can be opened by clicking on the “Connected Device” button in the bottom right corner of the screen (4.), or by selecting “Device Manager” from the “Settings” menu at the top of the screen.

Device Manager


1.2

Once the Welcome page loads, in the instrument panel at the left side of the window, click on the Scope button to open the Oscilloscope instrument.


1.3

Once the Scope instrument opens, the window contains the data plot (1.) showing captured data, the configuration panel (2.) to right of the plot, and the control toolbar (3.) at the top of the window.


2. Using the Scope

This section walks through setting up the Oscilloscope instrument to capture and analyze a simple waveform.

Note: This guide can be followed using a “Demo” device selected in the WaveForms Device Manager. Doing so allows the user to follow along without having access to a real Test and Measurement device.

2.1 Hardware Setup

In order to measure a signal with the Scope instrument, there must first be a signal to measure. To this end, this guide describes setting up a simple loopback circuit that connects the Test and Measurement device's Waveform Generator and Oscilloscope pins.


MTE Cables

If your Digilent Test and Measurement device supports MTE cables for analog input, open the dropdown below for instructions on setting up a loopback circuit with them.

MTE Cable Loopback

Connect the Test and Measurement device's Oscilloscope Channel 1 pin (orange wire/circle) to the device's Wavegen Channel 1 output pin (yellow wire/circle). For devices that use differential input channels, such as the Analog Discovery Studio with MTE cables, make sure to connect the Oscilloscope Channel 1 negative pin (orange wire with white stripes) to the ground pin associated with Wavegen Channel 1 (black wire).


BNC Oscilloscope Probes

If your Digilent Test and Measurement device supports BNC cables, then select your device below for instructions on setting up a loopback with them.

Analog Discovery 3 and Analog Discovery 2 with BNC Adapter

Connect the BNC Adapter to the Analog Discovery 3, as shown in the image to the right. Next, connect BNC cables to the Test and Measurement device's Oscilloscope Channel 1 BNC Connector and Wavegen Channel 1 BNC Connector. Connect the cables' probes to one another. Check the input probe's attenuation factor, as it will be used later to set up the software.

Note: For this demo, both ground wires were not connected together, because the Oscilloscope channel shares the same ground as the Wavegen channel. While BNC Probes are single-ended (as is the Waveform Generator hardware), a connected circuit must still share a common ground with the device. No more than one ground should be connected, to avoid the creation of ground loops that may introduce excess noise to measurements.

Note: When using BNC Probes, make sure to take note of the probes' bandwidth. When probes are used with an oscilloscope, the achievable bandwidth is limited by both the probes and the scope. For example, using 1 MHz probes will limit the bandwidth to 1 MHz, even if it's below the Test and Measurement device's specified maximum. To take full advantage of a probe's bandwidth, the 10X attenuation setting should be used.

Take note of the jumper that selects between AC and DC coupling on the BNC adapter. Either will work to measure the sine wave produced here, but some waveforms may find one setting or the other significantly more useful.

Analog Discovery Studio

Connect BNC cables to the Test and Measurement device's Oscilloscope Channel 1 BNC Connector and Wavegen Channel 1 BNC Connector. Connect the cables' probes to one another. Check the input probe's attenuation factor.

Note: For this demo, both ground wires are not connected because the Oscilloscope channel shares the same ground as the Wavegen channel. While BNC Probes are single-ended (as is the Waveform Generator hardware), a connected circuit must still share a common ground with the device. No more than one ground should be connected, to avoid the creation of ground loops that may introduce excess noise to measurements.

Note: When using BNC Cables, make sure to take note of the probes' bandwidth. When probes are used with an oscilloscope, the achievable bandwidth is limited by both the probes and the scope. For example, using 1 MHz probes will limit the bandwidth to 1 MHz, even if it's below the Test and Measurement device's specified maximum. To take full advantage of a probe's bandwidth, the 10X attenuation setting should be used.

Note: The Analog Discovery Studio's BNC connectors are DC coupled.

Make sure to flip the switch that selects between BNC and MTE input for Oscilloscope Channel 1 towards the BNC connector.

Analog Discovery Pro 2000 Series

Connect a BNC oscilloscope probe to the Analog Discovery Pro's Oscilloscope Channel 1 connector and a set of BNC minigrabbers to its AWG Channel 1 connector. Connect these as pictured, to form a loopback circuit. Check the input probe's attenuation factor, as it will be used later to set up the software.

Note: For this demo, the Scope and AWG ground wires are not connected because the two channels share the same ground. While BNC Probes are single-ended (as is the AWG hardware), a connected circuit must still share a common ground with the device. No more than one ground should be connected, to avoid the creation of ground loops that may introduce excess noise to measurements.

Note: When using BNC Probes, make sure to take note of the probes' bandwidth. When probes are used with an oscilloscope, the achievable bandwidth is limited by both the probes and the scope. For example, using 1 MHz probes will limit the bandwidth to 1 MHz, even if it's below the Test and Measurement device's specified maximum. To take full advantage of a probe's bandwidth, the 10X attenuation setting should be used.

Analog Discovery Pro 3000 Series

Connect a BNC oscilloscope probe to the Analog Discovery Pro's Oscilloscope Channel 1 connector and a set of BNC minigrabbers to its Wavegen Out Channel 1 connector. Connect these together, as pictured, to form a loopback circuit. Check the input probe's attenuation factor, as it will be used later to set up the software.

Note: For this demo, the Oscilloscope and Wavegen Out ground wires are not connected because they share the same ground. While BNC Probes are single-ended (as is the Waveform Generator hardware), a connected circuit must still share a common ground with the device. No more than one ground should be connected, to avoid the creation of ground loops that may introduce excess noise to measurements.

Note: When using BNC Probes, make sure to take note of the probes' bandwidth. When probes are used with an oscilloscope, the achievable bandwidth is limited by both the probes and the scope. For example, using 1 MHz probes will limit the bandwidth to 1 MHz, even if it's below the Test and Measurement device's specified maximum. To take full advantage of a probe's bandwidth, the 10X attenuation setting should be used.

wavegen_and_scope.jpg

Analog Discovery Pro 5000 Series

Connect a BNC oscilloscope probe to the Analog Discovery Pro's Oscilloscope Channel 1 connector and the BNC minigrabbers to the AWG Channel 1 connector on the front of the Analog Discovery Pro. Connect the opposite ends as pictured, to create a loopback circuit. Check the input probe's attenuation factor, as it will be used later to set up the software.

Note: For this demo, the Scope and AWG ground wires are not connected because they share the same ground. While BNC Probes are single-ended (as is the Waveform Generator hardware), a connected circuit must still share a common ground with the device. No more than one ground should be connected, to avoid the creation of ground loops that may introduce excess noise to measurements.

Note: When using BNC Probes, make sure to take note of the probes' bandwidth. When probes are used with an oscilloscope, the achievable bandwidth is limited by both the probes and the scope. For example, using 1 MHz probes will limit the bandwidth to 1 MHz, even if it's below the Test and Measurement device's specified maximum. To take full advantage of a probe's bandwidth, the 10X attenuation setting should be used.


2.2 Additional Software Setup

With the loopback circuit set up, a signal must now be applied to the analog output pins. WaveForms' Wavegen instrument will be used to accomplish this.

From the Scope instrument, opened in Step 1.2, return to WaveForms' Welcome page by clicking on its tab at the top of the screen. In the Welcome tab, click on the Wavegen instrument to open the page.

Click the Run button () in the control bar near the top of the window to begin outputting a signal. With default settings, a 1V amplitude (or 2VPP) 1 KHz sine wave is applied to the Wavegen Channel 1 output pin.

For more details on how to use the Wavegen instrument, please see the Using the Waveform Generator guide.

Return to the Scope instrument by clicking on its tab in the bar at the top of the screen.


If using BNC cables with your Digilent Test and Measurement device, click the dropdown below.

Set the BNC Cable Attenuation Factor

Regardless of the device, if BNC cables are used, make sure that the attenuation factor setting in WaveForms for Oscilloscope Channel 1 (pictured to the right) matches the setting of the probe.


Digilent Oscilloscopes feature the ability to select from a range of sample rates, which affects many instruments. Click the dropdown below to learn how to use this feature.

Modify the Digilent Oscilloscope System Clock Rate

To access this setting, first open the Device Manager, which can be found in WaveForms' “Settings” menu.

The system clock rate itself can be changed by opening the Options dropdown, while the Digilent device is selected in the list of devices. By changing the selection in the “Frequency” dropdown, the clock rate is changed. By increasing the system's clock rate in this way, the Waveform Generator, Oscilloscope, Logic Analyzer, Pattern Generator, and others, are made able to take in or put out samples at a rate of up to 125 MHz.

Note: Changing the system clock rate changes the set of sample rates that can be achieved by the Digilent Oscilloscope's Digital I/O pins. Achievable rates with either selection are integer divisions of the system sample rate. For example, a 62.5 MS/s sample rate is achievable in the Logic Analyzer when the frequency is set to 125 MHz, and a 25 MS/s sample rate when the frequency is 50 MHz.


Many Digilent devices support filtering of analog input data. The Analog Discovery Pro 3000 Series features an enable-able 20 MHz filter. With the introduction of the Analog Discovery 3 (AD3), user-configurable input filters implemented in digital hardware are now supported by both it and many other Digilent Oscilloscopes. These filters can optionally be enabled and configured separately for each oscilloscope input channel. Click the dropdown below to learn how to enable these filters.

Using Input Filters

To configure a filter channel, expand the channel list and then check the box to select the filter channel, as shown in the screenshot to the right. Click on the plot icon to open the filter settings. Select the available data source option. Each filter can be configured to use the averaged, decimated, or raw ADC data from its associated oscilloscope input. Next, select the supported hardware filter Mode. An AD3 was used for this example and FIR is the only option. An ADP3x50 device will show two filter Mode options (FIR and IIR). Next, click the filter window shape pull-down to select from the available windowing functions. Additional settings are visible for the IIR filter, including Type (Low-Pass, High-Pass, Band-Pass), Order, Frequency. Lastly, click anywhere in Waveforms to close the configuration window.

The Analog Discovery Pro (ADP3450/ADP3250) features an additional 20 MHz bandwidth filter that can optionally be enabled for each oscilloscope channel. Open the channel's settings through the gear icon (). The filter can be enabled or disabled for the channel by making a selection in the Bandwidth dropdown, as in the screenshot to the right.


2.3 Begin Capturing Data

Click the Run button in the control bar near the top of the window to begin capturing data on the analog input channels. Captured data will appear in the plot pane as a set of colored lines. The orange line (labeled 1 in the image to the right) corresponds to the signal captured on Oscilloscope Channel 1. The blue line (2) corresponds to the signal captured on Oscilloscope Channel 2.

Since Oscilloscope Channel 2 was left “floating” (not connected) while making connections in Step 2.1, it can be disabled by clicking the Channel 2 checkbox (3) in the configuration panel at the right side of the window.

For devices that support 4 channels, channels 3 and 4 also appear, colored purple and green respectively. They are also given their own configuration options and can be individually enabled and disabled.


2.4 Plot Pane Axes

By default, the plot has a vertical range of -2.5V to 2.5V, and a horizontal range of -5ms to 5ms (with respect to the trigger configuration, which is described in Section 3.2.

To re-scale the horizontal axis of the plot to show only two periods of the sine wave, change the Base value in the drop-down menu located in the Time box at the top of the configuration panel on the right side (labeled “1” in the image to the right) to “200 us/div”. This value can be set by either selecting a new value from the drop-down (the arrow next to the field), or by clicking into the time base field and manually typing it in (including units and an SI prefix). This specific value represents one hundred microseconds per division (vertical line) on the plot.

To re-scale the vertical axis of the plot, as before, change the Range value in the “Channel 1” box in the configuration panel (labeled “2” in the image to the right). A value of “200 mV/div” will make the sine wave fill the entire plot pane.

Hint: Users can adjust the range of an axis by hovering over the axis and using the scroll wheel on the mouse. A user can also click and drag the center point of an axis to adjust the time position / voltage offset. Double left-click on an axis to reset these changes.


2.5 Quick Measure Cursors

To take a quick measurement of the period and frequency of the sine wave, click the Quick Measure: Pulse icon() at the top right side of the plot pane. Move the cursor over the sine wave in the plot pane, and observe the values displayed. If the values change too quickly to make out, the capturing of data can be stopped by clicking on the Stop button () in the control bar near the top of the window.


2.6 Measurements

To view calculated values for period, frequency, amplitude, and various others, that may not be available through the Quick Measure cursors, click on the “View” menu in the toolbar just above the Run/Stop button. In the drop-down menu, click on Measurements. This opens a new Measurements pane to the right of the Plot pane.

When opened, the measurements pane does not contain any values. Click on the Add button (), then “Defined Measurement”, to add a new measurement to the list.

In the popup window, make sure that “Channel 1” is selected in the first list. The second list contains a wide variety of different measurements that can be calculated from data captured from the selected Channel. Expand the “Horizontal” selection, then click on “Frequency” and click the “Add” button at the bottom of the popup window. Under “Vertical”, click on “Peak2Peak”, and then “Add” again. Click “Close”.

Each measurement selected will now be displayed in the Measurements pane. As can be seen, the list of measurements now contains estimates of the frequency and peak-to-peak voltage of the captured signal. As expected, these measurements will be listed as approximately 1 KHz and 2V, respectively.


Note: Using Multiple Instruments

The Oscilloscope instrument can be used with other WaveForms instruments simultaneously. This is helpful in a wide variety of situations. One example would be to use the Waveform Generator to stimulate a circuit under test, the Power Supplies to provide power to the circuit, and view the response with the Oscilloscope, all at the same time. More information on how instruments can be operated together can be found in the Using Cross Triggering guide.

It should be noted that the analog input channels cannot be shared by multiple instruments. When the Oscilloscope is enabled, any other instruments using the analog input channels are disabled. Other instruments that use the analog input channels include the Voltmeter, Data Logger, Spectrum Analyzer, Network Analyzer, and Impedance Analyzer.


3. Scope User Interface Overview

This section walks through the wide variety of controls and features present in the Scope instrument

3.1 Control Buttons

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, described above, the Single button can be used to capture a buffer of data based around the first occurrence of a pre-defined trigger. The size of the buffer and when the buffer is captured relative to the trigger event are defined in Section 3.3.

The control bar also contains the trigger configuration options, described in the next section.


3.2 Triggers

To the right of the Single and Run buttons are a set of options that can be used to configure oscilloscope triggers. When taking repeated measurements, the plot pane stays centered on these trigger events. As seen above, when the Single button is pressed, a set of data centered on the next trigger event is captured and plotted.

The Mode drop-down allows the user to select what will happen when the Run button is pressed. For descriptions of the available settings, please see the WaveForms reference manual, available through the Help menu in WaveForms, in the menu bar at the top of the screen. The reference manual is also hosted on the Digilent Wiki at this link: WaveForms Reference Manual.

The Source drop-down allows the user to trigger the oscilloscope based on events in other instruments. For more information, please see Using Cross Triggering.

The Condition and Level drop-downs allow the user to describe what type of event to trigger on. For example, the configuration Condition = Rising and Level = 1V will generate a trigger event whenever the captured data rises above 1V.

Additional trigger configuration options can be found by clicking on the green down arrow to the right of the level field. Please use the WaveForms Help menu for more information.

By default, the trigger event is centered in the plot. Data captured before and after the trigger can be viewed by modifying Time configuration settings, described in the next section of this guide.


3.3 Time Configuration Group

By default, the Time group in the Configuration panel contains the “Position” and “Base” fields. The Position field centers the plot on the selected time, measured from the trigger. This can be used to view data captured before and after the trigger event. The Base field configures the scale used for the horizontal axis of the plot. Using these two settings can be thought of as “panning” and “zooming” the plot. The time base and position can also be changed with the mouse wheel, and by clicking and dragging the plot pane, respectively.

The Gear button () in the Time group can be used to change the units used in the position and division fields.

Additional time and sampling configuration options can be found by clicking the green down arrow at the bottom of the Time group. For instance, the sample count and rate used when capturing data can be manually configured - it should be noted that doing so also automatically changes the position and base settings. More information on these options can be found through the WaveForms Help menu.


3.4 Channel Configuration Groups

3.4.1 Signal Input Channels

Each input channel of the Test and Measurement Device can be configured via the associated Channel # group in the Configuration panel. By default, each of these groups contains Offset and Range fields. The Offset field is used to set the vertical position of the captured signal in the plot. The Range field is used to set the scale used for the vertical axis of the plot for that channel. The checkbox next to the channel name can be used to enable or disable that channel, as seen in Step 2.3 of this guide.

Additional options for each channel can be found by clicking on that channel's Gear button. These options can be used to select the units used for the Offset and Range fields, show or hide the signal's noise band in the chart, modify the channel's attenuation, sampling, and coupling, and others. More information on these options can be found through the WaveForms Help Menu.


3.4.2 Hardware Filter Channel

A few devices (i.e. Analog Discovery 3, Analog Discovery Pro 3250, Analog Discovery Pro 3450) have in-device hardware filters (FIR and/or IIR) with different windowing functions for each of the analog inputs as additional channels. Each hardware filter can be configured to use the averaged, decimated, or raw ADC data from its associated oscilloscope input. The hardware filter mode can be enabled by selecting the Filter channel, as shown in the example screenshot to the right. To configure the filter channel, click on the plot icon to open the filter settings. Select the available data source option and then click the FIR pull-down to select the filter window shape.


3.4.3 Wavegen Loopback Channels

A few devices (i.e. Analog Discovery 3, Analog Discovery Pro 3250, Analog Discovery Pro 3450) have Wavegen channel outputs that can be captured using in-device digital loopback; noted as channels W1 and W2 in the screen capture. The Wavegen channel outputs, frequency and amplitude modulations can be captured using in-device digital loopback.

Scope allows control of Wavegen channels by checking the box identified as '1'. In the case of the Analog Discovery 3, an analog readback for the power supply channels are also available; noted as channels V+ and V- in the screen capture. Scope allows control of the power supply channels by checking the box identified as '2'.


3.5 Other Channels

Other types of channels can be added to the plot and Configuration pane through the Add Channel button ().

Math channels can be used to display signals passed through some function. For example, high/low/band pass filters can be applied to signals captured on the analog input channels, and displayed on the plot. Custom functions can be defined using JavaScript syntax.

Reference channels can be used to display custom signals or previously-captured signals (imported from a file) in the plot.

Digital channels can be used to display data captured on the digital input/output channels in a separate pane which appears below the plot. This can be used to view both analog and digital signals at the same time. Digital channels can be also used as inputs to custom math channels in order to display them in the main plot pane. For more information on how digital data can be viewed and used, refer to the Using the Logic Analyzer guide.

3.5.1 Filter Math Channel

The Math Filter channels can be added using the Add Channel button from the Channel toolbar. The Filter channel has the option to select the Input source (to filter any real or reference channel), select a filter algorithm, adjust the filter order, select the filter mode, and select the cutoff or lower and upper half power frequencies.


3.5.2 Lock-in Amplifier

The Lock-In amplifier can be used to extract signal based on a know frequency or reference carrier waveform, demodulate or extract from noise. Lock-In channels can be added using the Add Channel button from the Channel toolbar. Select the LockIn option to configure the Math channel. Based on the selected reference source or specified frequency and phase a sine signal is synthesized. This is mixed with input in-phase and quadrature, then the selected filter applied. Configuring a LockIn channel requires the selections of an Input channel, a Reference signal mode, a Filter algorithm and Type, an amplification Gain, and an Output (Amplitude, Phase, Real or Imag). For additional outputs of the process LockIn Ouput channels can be added.


3.6 Additional Configuration Options

The Options drop-down above the channel groups contains a set of options that apply to multiple channels at once. For instance, the rate at which the plot is updated can be changed from this menu. For more information on the options available in this menu, please refer to the WaveForms Help menu.


3.7 Chart Pane

The Chart pane displays data captured on the analog input channels. The horizontal axis of the plot represents time before and after the trigger event that initiated the capture. The vertical axis represents the voltage level (or other selected unit, for math and reference channels). Each channel has its own vertical scale, which can be selected by clicking on their identifiers in the top left corner of the plot pane (C1, C2, etc.).

Capture status information can be found next to the channel select buttons, including a state string (Stop / Armed / Auto / Config / Trig'd). Information about the capture being displayed can be found to the right of the channel select buttons, including the number of samples, sample rate, and a time stamp for when the capture was taken.

Another set of buttons can be found in the upper right corner of the plot panel:

  • The Thumbnail button () displays a small version of the entire buffer of data, including indicators for what part of the signal the main plot is currently viewing.
  • The three “Quick Measure” tools:
    • Free () measures the distance between two mouse clicks, expressed in time and frequency. It also displays the vertical value and difference of the clicked positions.
    • Vertical () is similar to Free mode but the cursor sticks to signal transitions. The vertical measurement is performed on signal values for each channel.
    • Pulse () places a single vertical cursor showing the time position and the waveform's level at the intersections with the vertical cursor. If the mouse is placed between two peaks of a signal, it measures the pulse-width, period, frequency, and duty cycle of a signal.
  • The Show Entire Capture button () zooms the plot all of the way out.

The Gear button next to the previous five buttons can be used to change how the plot is displayed, including adding labels, changing the background between light and dark, displaying all channel scales at once, and others. For more information on these options, refer to the WaveForms Help menu.

The “Y” button and drop-down next to the previous Gear button can be used to add horizontal cursors to the plot. Vertical cursors can be added to the plot using the “X” button and drop-down in the lower-left corner of the plot pane.


3.8 File Menu

The File menu at the top of the window provides the ability to create another Scope instrument, as well as to save and load acquisitions and projects.

Saving an acquisition allows the user to load captured data back into WaveForms later. Acquisitions can be loaded into other instruments, as, for example, a signal to be generated by the Wavegen instrument.

Saving a project (with or without any acquisitions) allows the user to close WaveForms without losing any configurations. In addition to this, projects can be shared with others to aid in group projects and guided learning.

Exporting data as an image allows the user to produce a screenshot of the entire Scope tool. Alternatively, captured data can be exported in a variety of different file formats, including CSV, TXT, and TDMS.


3.9 Control Menu

The Control menu at the top of the window provides the same functionality as the Single/Stop/Run buttons and lists hotkeys that can be used for each.


3.10 View Menu

A wide variety of different view panes can be added to the user interface using the View menu in the toolbar above the Single/Run/Stop buttons. Each pane, once opened, can be closed by clicking the “X” button in the top right corner of its pane. A description of each view in the menu is listed below:

  • Add Zoom: Creates an additional plot that can be used to zoom in on particular regions of interest in the signal.
  • Add XY: Creates an additional plot with configurable X and Y axes. For instance, two channels can be plotted against one another to create an IV curve diagram.
  • Add XYZ 3D: Creates a 3D plot where the axes can be sources from any three channels. Note that a device with three or more channels is required.
  • FFT: Creates plot to display a Fast Fourier Transform diagram of the captured signals.
  • Spectrogram: Creates a spectrogram plot, showing how the frequency components of captured signals change over time.
  • Spectrogram 3D: Creates a spectrogram plot, plotting data in three dimensions.
  • Histogram: Creates a plot that displays the percentage of time spent by the signal at each voltage level.
  • Persistence: Creates a plot that places multiple signal captures on the same plot, with color indicating how often a voltage level is detected at a certain time.
  • Data: Creates a chart that exposes raw capture data in a spreadsheet.
  • Measurements: As seen in Step 2.6 of this guide, can be used to create a list of characteristics of captured signals.
  • Logging: Allows the user to log captured data directly to a file, over multiple acquisitions. Includes a scripting interface (JavaScript) with examples.
  • Audio: Allows the user to playback captured signals as sound through the host computer's audio output.
  • X/Y Cursors: Lists all cursors that have been added to the plot.
  • Notes: Creates a text editor pane that can be used to document configuration choices, or whatever other information could be useful
  • Digital: Exposes some functionality of the Logic Analyzer instrument within the Scope instrument, allowing the user to capture and view data from the digital input/output channels. For more information on capturing and viewing digital signals, please see the Using the Logic Analyzer guide.
  • Digital Measurements: Creates a list that can contain features of captured digital signals (frequency, duty cycle, pulse width, etc.).


Note that, in the newest versions of WaveForms, all of these options are also now available through the toolbar above the control panel, as seen to the right.


3.11 Record to File

The Record to File can be opened under Control menu or Rec. toolbar button. This lets you capture samples directly to file in Binary, NI TDMS, WAV, CSV or text file.


Next Steps

For more guides on how to use the Digilent Test and Measurement device, return to the device's Resource Center, linked from the Test and Measurement page of this wiki.

If voltage values seen in the Scope are significantly different from expected, please calibrate the device by following the Calibration Guide.

For more information on WaveForms, visit the WaveForms Reference Manual.

For technical support, please visit the Test and Measurement section of the Digilent Forums.