1. Introduction
The Digilent Impedance Analyzer for Analog Discovery is an accessory designed to enhance the capabilities of Analog Discovery devices. It integrates seamlessly with the Impedance Analyzer tool within the WaveForms software, providing automated configuration for impedance measurements. This accessory is compatible with both Analog Discovery 2 and Analog Discovery Legacy, connecting via the 2×15 Analog Discovery connector.
Figure 1: Digilent Impedance Analyzer module. This image displays the green circuit board with its various components, including the main connector, terminal block, and integrated circuits.
2. Key Features
- 2-wire Impedance Analyzer: Integrates directly with the Impedance Analyzer tool in WaveForms.
- Capacitance Measurement Range: 50pF to 500µF.
- Inductance Measurement Range: 10µH to 1000mH.
- Excitation Frequency Range: 1Hz to 15MHz.
- Software Requirement: Requires WaveForms version 3.8.2 or later for operation.
3. Setup Instructions
- Software Installation: Ensure you have WaveForms software version 3.8.2 or later installed on your computer. If not, download and install the latest version from the Digilent website.
- Connect Analog Discovery: Connect your Analog Discovery device (Analog Discovery 2 or Analog Discovery Legacy) to your computer via USB.
- Attach Impedance Analyzer: Carefully align and connect the Digilent Impedance Analyzer module to the 2×15 connector on your Analog Discovery device. Ensure a secure connection.
- Launch WaveForms: Open the WaveForms software. The software should detect the connected Analog Discovery device and the Impedance Analyzer accessory.
- Access Impedance Analyzer Tool: Navigate to the Impedance Analyzer tool within the WaveForms software interface.
4. Operating Instructions
The Impedance Analyzer accessory is designed for ease of use with the WaveForms software. It automatically adjusts reference resistors and relays to select the most appropriate configuration for the unknown impedance being measured.
- Connect Device Under Test (DUT): Connect the component or circuit you wish to analyze to the input terminals of the Impedance Analyzer module.
- Configure Settings in WaveForms: Within the WaveForms Impedance Analyzer tool, select your desired excitation frequency range and measurement parameters. The accessory will automatically adapt its internal configuration.
- Initiate Measurement: Start the measurement process in WaveForms. The software will display the impedance characteristics of your DUT.
- Analyze Results: Use the plotting and analysis features within WaveForms to interpret your measurement data, including impedance magnitude, phase, capacitance, and inductance.
5. Maintenance
The Digilent Impedance Analyzer is a robust device designed for durability. Minimal maintenance is required.
- Cleaning: Use a soft, dry cloth to gently clean the module. Avoid using liquid cleaners or solvents, as these can damage the electronic components.
- Storage: Store the module in a dry, dust-free environment when not in use. Protect it from extreme temperatures and humidity.
- Handling: Handle the module by its edges to avoid touching the electronic components directly.
6. Troubleshooting
If you encounter issues with your Impedance Analyzer, consider the following:
- Module Not Detected: Ensure the Impedance Analyzer is securely connected to the Analog Discovery device and that the Analog Discovery device is properly connected to your computer and recognized by WaveForms.
- Software Version: Verify that your WaveForms software is version 3.8.2 or later. Older versions may not support the Impedance Analyzer accessory.
- Connection Issues: Check all cable connections. Ensure the Analog Discovery device is receiving power.
- Incorrect Readings: Ensure the Device Under Test (DUT) is correctly connected to the module's terminals. Review the settings in the WaveForms Impedance Analyzer tool.
- Software Restart: Sometimes, restarting the WaveForms software or your computer can resolve minor communication issues.
7. Technical Specifications
| Specification | Value |
|---|---|
| Brand | Digilent |
| Model Number | 410-378 |
| Power Source | Corded Electric (via Analog Discovery) |
| Color | Black (connector) / Green (PCB) |
| Item Weight | 0.64 ounces (approx. 0.04 Pounds) |
| Product Dimensions (L x W x H) | 1.96 x 1.77 x 1.5 inches |
| Capacitance Measurement Range | 50pF - 500µF |
| Inductance Measurement Range | 10µH - 1000mH |
| Excitation Frequency Range | 1Hz - 15MHz |
| Required Software | WaveForms version 3.8.2 or later |
| Date First Available | July 18, 2018 |
8. Warranty and Support
For information regarding product warranty, please refer to the official Digilent website or contact Digilent customer support directly. Digilent provides comprehensive resources, including documentation, forums, and technical support, to assist users with their products.
Online Resources: Visit the Digilent website for product documentation, software downloads, and community forums.
Contact Support: For technical assistance, please contact Digilent support through their official channels.
