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71M6533-
DB Demo Board User’s Manual
Page: 3 of 75
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REV 3
Table of Contents
1
GETTING STARTED................................................................................................................................................ 7
1.1
General .................................................................................................................................................................... 7
1.2
Safety and ESD Notes ............................................................................................................................................ 7
1.3
Demo Kit Contents ................................................................................................................................................. 7
1.4
Demo Board Versions ............................................................................................................................................ 7
1.5
Compatibility ........................................................................................................................................................... 8
1.6
Suggested Equipment not Included ..................................................................................................................... 8
1.7
Demo Board Test Setup ......................................................................................................................................... 8
1.7.1
Setup with USB-to-Serial Adapter ..................................................................................................................... 9
1.7.2
Power Supply Setup ........................................................................................................................................ 10
1.7.3
Checking Operation......................................................................................................................................... 10
1.7.4
Serial Connection Setup .................................................................................................................................. 11
1.8
Using the Demo Board ......................................................................................................................................... 13
1.8.1
Serial Command Language ............................................................................................................................. 13
1.8.2
Using the Demo Board for Energy Measurements .......................................................................................... 21
1.8.3
Adjusting the Kh Factor for the Demo Board ................................................................................................... 21
1.8.4
Adjusting the Demo Boards to Different Current Transformers ....................................................................... 21
1.8.5
Adjusting the Demo Boards to Different Voltage Dividers ............................................................................... 22
1.9
Calibration Parameters ........................................................................................................................................ 23
1.9.1
General Calibration Procedure ........................................................................................................................ 23
1.9.2
Calibration Macro File ..................................................................................................................................... 24
1.9.3
Updating the Demo Code (hex file) ................................................................................................................. 24
1.9.4
Updating Calibration Data in Flash or EEPROM ............................................................................................. 24
1.9.5
Automatic Gains Calibration ............................................................................................................................ 25
1.9.6
Loading the Code for the 6533 into the Demo Board ...................................................................................... 25
1.9.7
The Programming Interface of the 71M6533 ................................................................................................... 27
1.10
Demo Code ........................................................................................................................................................ 27
1.10.1
Demo Code Description ............................................................................................................................... 27
1.10.2
Important Demo Code MPU Parameters ..................................................................................................... 27
1.10.3
Useful CLI Commands Involving the MPU and CE ...................................................................................... 33
2
APPLICATION INFORMATION ............................................................................................................................. 35
2.1
Calibration Theory ................................................................................................................................................ 35
2.1.1
Calibration with Three Measurements ............................................................................................................. 35
2.1.2
Calibration with Five Measurements ............................................................................................................... 37
2.2
Calibration Procedures ........................................................................................................................................ 38
2.2.1
Calibration Procedure with Three Measurements ........................................................................................... 39
2.2.2
Calibration Procedure with Five Measurements .............................................................................................. 40
2.2.3
Calibration Procedure for Rogowski Coil Sensors ........................................................................................... 40
2.2.4
Calibration Spreadsheets ................................................................................................................................ 41
2.2.5
Compensating for Non-Linearities ................................................................................................................... 45
2.3
Power Saving Measures ...................................................................................................................................... 46
2.4
Schematic Information ......................................................................................................................................... 46
2.4.1
Components for the V1 Pin ............................................................................................................................. 46
2.4.2
Reset Circuit .................................................................................................................................................... 46
2.4.3
Oscillator ......................................................................................................................................................... 47
2.4.4
EEPROM ......................................................................................................................................................... 47
2.4.5
LCD ................................................................................................................................................................. 48
2.4.6
Optical Interface .............................................................................................................................................. 48
2.4.7
Ferrites ............................................................................................................................................................ 49
