In this video, I reviewed a FNIRSI/RIIAI SG-003A muti-functional signal generator/process meter/loop calibrator. It is surprisingly quite a capable device. It has current sourcing and sinking capability and can also be used to generate and measure voltages. I demonstrated a few key features in the video followed by a teardown.

Product link: https://www.amazon.com/Generator-Riia...
Coupon: 06D8MOQM valid till 10/19/23

00:00 Overview
06:59 Current Source
09:23 Voltage Source
12:28 Current Sink. Loop Measurement
13:18 Voltage Measurement
14:04 24v Output
15:45 Signal Generator/Frequency Output
17:03 Signal Conversion
19:23 PWM Signal Output
20:04 Teardown
24:33 Conclusions