# SMU - Analog Discovery {% embed url="" fullWidth="true" %} A portable USB-powered test and measurement device, also known as the AD3, is a digital oscilloscope, logic analyzer, waveform generator, pattern generator, and much more. Digilent WaveForms software makes it easy to acquire, visualize, store, analyze, produce and reuse analog and digital signals. *** ## Hardware Specs

Product	Cost (each)	Quantity
Analog Discovery 3	$379	3
Jumper Cables set	$6.98	1
Micropositioners	TBD	4

Total Cost: Setup Time: *** ## Technical Specs * Output Voltage Range: ±5 V * Accuracy: 1. ±10 mV ± 0.5% (│Vout│ ≤ 1.25 V) 2. ±25 mV ± 0.5% (│Vout│ > 1.25 V) * Number of channels: 2 (custom channels feature available) * DC Current Drive: 30 mA maximum *** ## Setting up AD 3 1. Download the Waveforms software: 2. Run the .exe installer 3. Plug the Analog Discovery 3s into the laptop and open up the Waveforms software. *** ## Circuit Setup Set up the circuit that connects the Analog Discovery 3 like this circuit diagram:

The actual circuit will look something like this:

## Manual Testing with Waveforms GUI (not sdk) * For our purposes, click on Tracer (for IV Characterization).

* Click on drop down to select transistor type.

* Select “No Adapter”

* Select “Measure Id/Vgs” and set the ranges for the Vgs and Vds.

* Select step-size/no. of steps for both voltages.

* Click play (in the top right corner) and watch the magic!

* I-V Curve *for ZVN3310A Transistor* on Curve Tracer *(replace this image with our chip curves).*

#### Suggestions: * Can adjust current compliance for Gate if needed. (below the main toolbar, right above the graph). *** ## Automated testing with Waveforms SDK Get the code from github by typing in terminal ``` >>> git clone https://github.com/joshna-ii/HackerFabSMU ``` Cd into this directory then run the below Python script in any environment where Python is installed by typing in terminal ``` >>> python3 smu.py ``` If this is the first time being run in this environment, make sure all dependencies are installed by typing the following command in terminal: ``` >>> pip install -r requirements.txt ``` *** --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.hackerfab.org/home/fab-toolkit/metrology-characterization/semiconductor-parameter-analyzer/smu-analog-discoveries.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.