MVP Electron application for the Agilent 34401A.

Based on the DMM.js-serial library.

Should work without any issue for other RS232 SCPI-compatible measurement tool (HP / Agilent 34410, Keithley 2000...)

• AC / DC current & voltage
• 2 and 4 wire (kelvin) resistance measurement
• Frequency and period
• Single / Loop reading mode
• CSV time / value data logging
• Auto-connect, display connected device info

Kinda lazy, needs to be done

• Better design
• True toggle buttons
• Front / Read measure indication
• Better device lifecycle management & command transaction queue
• Errors display feature
• Device configuration menu
• Data-logging dedicated menu

git clone https://github.com/rascafr/dmm-js-app.git
cd dmm-js-app

# rebuild serialport dependency for electron
npm i -D electron-rebuild
npm i
./node_modules/.bin/electron-rebuild

npm start

Even if it's not the main application's purpose, you can log values into a CSV file (the data will be saved with semicolon delimiters). Both raw value and time (in ms) will be saved, so you can perform some Δv / Δt calculations with the resulting data.

Just indicate the CSV output file path when calling the application from the command line:

npm start ~/Desktop/logMyData.csv

• wait for the device to be connected
• select the function you want to use for the measurement (e.g.: DC V)
• press the Loop button after the first measurement to start the recording, screen will refresh after each reading
• take a coffee ☕, wait for as long as you need
• select the Single button to stop the recording
• close the window to disconnect the device and save data to the output file

Installation instruction are up-to-date with the following tips about the serialport library (used in DMM.js-serial).

serialport/node-serialport#1910 (comment)