How to Test the Voltage of Zener Diode without variable DC power supply - YouTube
How to Test a Diode using Analog and Digital Multimeter (DMM)?
Testing A zener diode With A Digital Multimeter | Zener Diode Tester
Multimeter use how to test electronic components with a multimeter: Test a zener diode with Digital multimeter Analog multimeter and multifunction tester.
How to Test Diodes with a Digital Multimeter | Fluke