Differences
This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
test-and-measurement:guides:waveforms-supplies [2022/09/12 18:37] – changed forum.digilentinc.com to forum.digilent.com Jeffrey | test-and-measurement:guides:waveforms-supplies [2024/02/28 19:21] (current) – [Prerequisites] James Colvin | ||
---|---|---|---|
Line 1: | Line 1: | ||
+ | ====== Using the Power Supplies ====== | ||
+ | ~~TechArticle~~ | ||
+ | |||
+ | {{: | ||
+ | |||
+ | ===== Introduction ===== | ||
+ | This guide explains the use of WaveForms' | ||
+ | |||
+ | On some devices with digital input/ | ||
+ | |||
+ | ---- | ||
+ | ===== Prerequisites ===== | ||
+ | * A Digilent Test & Measurement Device with Variable Power Supplies | ||
+ | * [[test-and-measurement: | ||
+ | * [[test-and-measurement: | ||
+ | * [[test-and-measurement: | ||
+ | * [[test-and-measurement: | ||
+ | * [[test-and-measurement: | ||
+ | * [[test-and-measurement: | ||
+ | * //An Analog Discovery (Legacy) can also be used, however, its power supplies are not variable. The user interface for control of its power supplies is largely the same as for other devices.// | ||
+ | * A Computer with WaveForms Software Installed | ||
+ | |||
+ | **Note:** //Images present in this guide represent the user interface as they appear for the Analog Discovery 3 and Analog Discovery Pro Series unless otherwise noted.// | ||
+ | |||
+ | If you have an **ADP5250** or **DPS3340**, | ||
+ | |||
+ | ---- | ||
+ | ===== Guide ===== | ||
+ | ==== 1. Opening the Supplies Instrument ==== | ||
+ | <WRAP group> | ||
+ | <WRAP column half> | ||
+ | === 1.1 === | ||
+ | Plug in the Test & 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' | ||
+ | |||
+ | **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 **Supplies** button to open the //Power Supplies// instrument. | ||
+ | </ | ||
+ | {{: | ||
+ | </ | ||
+ | ---- | ||
+ | === 1.3 === | ||
+ | Once the Supplies instrument opens, the window contains the controls for the two variable power supply rails, described in the next section. | ||
+ | |||
+ | When using a board with a digital supply, the //Power Supplies// instrument also contains some additional controls for the device' | ||
+ | ---- | ||
+ | <WRAP group>< | ||
+ | {{: | ||
+ | |||
+ | < | ||
+ | </ | ||
+ | {{: | ||
+ | |||
+ | < | ||
+ | </ | ||
+ | ---- | ||
+ | ==== 2. Using the Supplies ==== | ||
+ | //This section walks through setting up the power supplies and voltmeter to measure the DC output of the power supplies. There are two different options for test circuits, presented in the dropdowns below.// | ||
+ | |||
+ | //If your Test & Measurement Device does not feature a Voltmeter instrument, select the second option.// | ||
+ | |||
+ | //If your device does not feature a Voltmeter, and you do not have access to a Digital Multimeter, continue to [[# | ||
+ | |||
+ | /* **Note:** //As of time of writing, all devices featuring a voltmeter also feature positive and negative supply rails.// */ | ||
+ | |||
+ | --> (2.1 & 2.2) Using the Device' | ||
+ | <WRAP group> <WRAP column half> | ||
+ | === 2.1 Hardware Setup === | ||
+ | In order to measure the output of the variable power supply pins, these pins must be connected to something that can measure voltages. While a standard digital multimeter or voltmeter could be used, this guide will show how to use WaveForms' | ||
+ | |||
+ | Connect the Test & Measurement Device' | ||
+ | |||
+ | For devices using MTE cables, the supply pins will be white and red, for the V+ and V- supplies respectively (pictured to the right). For the Analog Discovery Pro (ADP3450/ | ||
+ | |||
+ | If the Test & Measurement Device has differential analog input channels, make sure to connect the analog input channel negative pins, labeled " | ||
+ | |||
+ | **Note:** //The analog input channels can be used with BNC Cables if supported by your device. For more information, | ||
+ | </ | ||
+ | {{ : | ||
+ | </ | ||
+ | ---- | ||
+ | <WRAP group> <WRAP column half> | ||
+ | === 2.2 Software Setup === | ||
+ | With the loopback circuit set up, WaveForms' | ||
+ | |||
+ | From the // | ||
+ | </ | ||
+ | {{: | ||
+ | </ | ||
+ | |||
+ | <WRAP group> <WRAP column half> | ||
+ | In order to show both the // | ||
+ | |||
+ | **Note:** To return to the default tabbed view later, click on the Tabbed Windows button ({{learn: | ||
+ | </ | ||
+ | {{: | ||
+ | </ | ||
+ | |||
+ | <-- | ||
+ | |||
+ | --> (2.1 & 2.2) Using a Digital Multimeter to Test the Supplies # | ||
+ | |||
+ | <WRAP group> <WRAP column half> | ||
+ | === 2.1 Hardware Setup === | ||
+ | The ground and power supply rail MTE cables can be probed with a Digital Multimeter (DMM) by either touching the DMM probes to the metal pads at the end of the supply rail's MTE cables, or using pins to first break out the MTE cables to a breadboard or other circuit. Setting the DMM to measure DC voltage allows you to easily test that the supply rail voltage matches the value specified by WaveForms. | ||
+ | |||
+ | When using the Digital Discovery or Analog Discovery Pro (ADP3450/ | ||
+ | </ | ||
+ | {{: | ||
+ | </ | ||
+ | |||
+ | ---- | ||
+ | |||
+ | <WRAP group> <WRAP column half> | ||
+ | === 2.2 Software Setup === | ||
+ | //No additional Software Setup is required.// | ||
+ | </ | ||
+ | |||
+ | <-- | ||
+ | |||
+ | ---- | ||
+ | <WRAP group> | ||
+ | <WRAP column half> | ||
+ | === 2.3 Enable the Supplies === | ||
+ | When the // | ||
+ | |||
+ | If your Test & Measurement Device has positive and negative supply channels, then the " | ||
+ | |||
+ | If your Test & Measurement Device has only one supply, then the " | ||
+ | |||
+ | Make sure that both power supplies are set to Ready, then click on the Master Enable button to turn both of them on. | ||
+ | |||
+ | Some devices featuring digital input/ | ||
+ | </ | ||
+ | <WRAP column half> | ||
+ | {{: | ||
+ | </ | ||
+ | </ | ||
+ | ---- | ||
+ | |||
+ | ==== 3. Power Supplies User Interface Walkaround ==== | ||
+ | //The remainder of this guide describes the functionality of the rest of the //Power Supplies// user interface. While following along, experiment with power supply controls described, and look back at the Voltmeter to see how they the voltage outputted by the variable supplies is affected.// | ||
+ | ---- | ||
+ | <WRAP group> | ||
+ | <WRAP column half> | ||
+ | === 3.1 Supply Controls === | ||
+ | Each **Voltage** field (labeled 1 in the image to the right) can be used to set the voltage output by that supply. This field can be set by either typing a voltage value (with units) into the text field, or by using the drop-down to select a value. When a value is entered that is outside of the possible range for the Test & Measurement Device, the value is clamped to the nearest voltage that can be output. | ||
+ | |||
+ | The output voltage level can also be changed by adjusting the slider (2) to the right of the voltage field. | ||
+ | |||
+ | **Note:** //This slider is not available for the Analog Discovery Legacy, as its power supplies are not variable.// | ||
+ | |||
+ | The Gear button ({{: | ||
+ | |||
+ | As previously mentioned in step 2.3 of this guide, each power supply has its own enable/ | ||
+ | </ | ||
+ | <WRAP column half> | ||
+ | {{: | ||
+ | </ | ||
+ | </ | ||
+ | ---- | ||
+ | <WRAP group> | ||
+ | <WRAP column half> | ||
+ | === 3.2 Controlling All Supplies at Once === | ||
+ | **Note:** // | ||
+ | |||
+ | As previously mentioned, each supply can be enabled or disabled at once using the Master Enable button. | ||
+ | |||
+ | When checked, the // | ||
+ | </ | ||
+ | <WRAP column half> | ||
+ | {{: | ||
+ | </ | ||
+ | </ | ||
+ | ---- | ||
+ | <WRAP group> | ||
+ | <WRAP column half> | ||
+ | === 3.3 Menu Bar === | ||
+ | The **File** menu, in the menu bar at the top of the supplies instrument, allows the user to save and load // | ||
+ | |||
+ | The **Control** menu exposes the same functionality as the Master Enable Button, and lists hotkeys that can be used to quickly stop and run the power supplies. | ||
+ | |||
+ | The **Window** menu provides a fast way to switch to other tabs open in WaveForms. | ||
+ | </ | ||
+ | <WRAP column half> | ||
+ | {{: | ||
+ | </ | ||
+ | </ | ||
+ | ---- | ||
+ | <WRAP group> | ||
+ | <WRAP column half> | ||
+ | === 3.4 System Monitor === | ||
+ | Disabled by default, the **System Monitor** pane can be used to view the status of the Test & Measurement Device' | ||
+ | </ | ||
+ | <WRAP column half> | ||
+ | {{: | ||
+ | |||
+ | < | ||
+ | ---- | ||
+ | {{ reference: | ||
+ | |||
+ | < | ||
+ | ---- | ||
+ | {{ : | ||
+ | |||
+ | < | ||
+ | ---- | ||
+ | {{ : | ||
+ | |||
+ | < | ||
+ | </ | ||
+ | </ | ||
+ | ---- | ||
+ | ==== 4. Digital I/O Controls ==== | ||
+ | //This section presents additional features available in the Supplies instrument of some devices with digital input/ | ||
+ | <WRAP group> <WRAP column half> | ||
+ | === 4.1 Digital IO Drivers & Digital Input weak pull & In/Out Frequency === | ||
+ | The //Digital IO Drivers & Digital Input weak pull & In/Out Frequency// pane allows the selection of several different options for the device' | ||
+ | * The drive current - how much current is available for each pin to drive - which has several options from 2 to 16 mA, or automatic selection (the default). | ||
+ | * The slew speed - how quickly the digital signals transition - which can be set to Quiet, Fast, or Slow (default Quiet). | ||
+ | * The DIN pull - the voltage that the input-only (DIN) pins are pulled to when not driven by another source - which can be set to Up, Down, or Middle (default Down). | ||
+ | * The desired clock frequency – which affects the sample rate used for signal generation and analysis – can be set to lower or higher values than 100 MHz to fine-tune generated signals’ frequencies. | ||
+ | |||
+ | This pane can be hidden with the checkbox to the left of its title. | ||
+ | |||
+ | </ | ||
+ | {{ : | ||
+ | {{ : | ||
+ | </ | ||
+ | |||
+ | **Note:** // | ||
+ | </ | ||
+ | ---- | ||
+ | <WRAP group> <WRAP column half> | ||
+ | === 4.2 Digital IO Pulls === | ||
+ | The //Digital IO pulls// pane can be used to - either individually, | ||
+ | |||
+ | This pane can be hidden with the checkbox to the left of its title. | ||
+ | </ | ||
+ | {{: | ||
+ | </ | ||
+ | ---- | ||
+ | ===== Next Steps ===== | ||
+ | |||
+ | For more guides on how to use the Digilent Test & Measurement Device, return to the device' | ||
+ | |||
+ | If voltage values output by the // | ||
+ | |||
+ | For more information on WaveForms visit the [[software: | ||
+ | |||
+ | For technical support, please visit the [[https:// |