Thank you for sharing the protocol description.
Unfortunately, I won't be able to use a standard adapter since the USB port on the multimeter will be occupied by my computer for control purposes. Instead, I'll need to interface with the multimeter using the input and output pins on the Arduino.
If anyone has experience with creating a DIY adapter or could provide a schematic for connecting the multimeter to the Arduino using the input and output pins, I would be very grateful.
Thank you again