LMU Evaluation Kit User Manual
Rev 1
5
1.4 Safety and ESD Notes
EXERCISE CAUTION WHEN LIVE AC VOLTAGES ARE PRESENT!
Do not connect test equipment or external development boards directly to the non-
isolated portion of the 78M6610 hardware. Damage to the 78M6610 and external
equipment will occur due to the 78M6610’s “high side” reference topology. The
78M6610’s V3P3 supply (i.e., “high side”) is connected directly to Neutral (Earth
Ground) creating a ground reference disparity with any properly grounded external
equipment.
The board components and firmware settings are designed to operate with the following nominal AC electrical
ranges:
Voltage
Current
Line Frequency
10-300 VAC
10 mA – 20A
46-64 Hz
1.5 Testing the LMU EV Board Prior to Shipping
Before every kit is shipped, the board (and sensors) undergo a single-load point calibration using precise
energy source equipment. The device temperature is also calibrated at the same time. Results printed out on
paper and included with the EV kit.
