Page: 1 of 75 ` REV 3 71M6533-DB Demo Board USER’S MANUAL

71M6533-DB Demo Board User’s Manual Page: 10 of 75 ` REV 3 Figure 1-2: DB6534T14A3 Demo Board with USB-to-Serial Adapter 1.7.2 POWER SUPPLY SETU

71M6533-DB Demo Board User’s Manual Page: 11 of 75 ` REV 3 Step Display in left-most digit(s) Text display Correspon-ding CLI command Displayed P

71M6533-DB Demo Board User’s Manual Page: 12 of 75 ` REV 3 Configure button. Port speed and flow control are configured under the General tab (Fig

71M6533-DB Demo Board User’s Manual Page: 13 of 75 ` REV 3 1.8 USING THE DEMO BOARD The 71M6533-DB Demo Board is a ready-to-use meter pre

71M6533-DB Demo Board User’s Manual Page: 14 of 75 ` REV 3 Commands to Display Help on the CLI Commands: ? HELP Comment Description: Command help

71M6533-DB Demo Board User’s Manual Page: 15 of 75 ` REV 3 Commands for MPU/XDATA Access: ) MPU DATA ACCESS Comment Description: Allows user to r

71M6533-DB Demo Board User’s Manual Page: 16 of 75 ` REV 3 Commands for EEPROM Control: EE EEPROM CONTROL Comment Description: Allows user to enab

71M6533-DB Demo Board User’s Manual Page: 17 of 75 ` REV 3 Commands controlling the Auto-Calibration Function: CL AUTO-CALIBRATION CONTROL Comment

71M6533-DB Demo Board User’s Manual Page: 18 of 75 ` REV 3 Commands for Controlling the RMS Values Shown on the LCD Display: MR METER RMS DISPLAY

71M6533-DB Demo Board User’s Manual Page: 19 of 75 ` REV 3 Commands for Accessing the Trim Control Registers: T TRIM CONTROL Comment Description:

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are

71M6533-DB Demo Board User’s Manual Page: 20 of 75 ` REV 3 Commands for Controlling the Metering Values Shown on the LCD Display: M METER DISPLAY

71M6533-DB Demo Board User’s Manual Page: 21 of 75 ` REV 3 1.8.2 USING THE DEMO BOARD FOR ENERGY MEASUREMENTS The 71M6533-DB Demo Board was desig

71M6533-DB Demo Board User’s Manual Page: 22 of 75 ` REV 3 In general, when IMAX is applied to the primary side of the CT, the voltage Vin at the

71M6533-DB Demo Board User’s Manual Page: 23 of 75 ` REV 3 1.9 CALIBRATION PARAMETERS 1.9.1 GENERAL CALIBRATION PROCEDURE Any calibration meth

71M6533-DB Demo Board User’s Manual Page: 24 of 75 ` REV 3 1.9.2 CALIBRATION MACRO FILE The macro file in Figure 1-6 contains a sequence of the s

71M6533-DB Demo Board User’s Manual Page: 25 of 75 ` REV 3 1.9.5 AUTOMATIC GAINS CALIBRATION The Demo Code is able to perform a single-point fast

71M6533-DB Demo Board User’s Manual Page: 26 of 75 ` REV 3 Figure 1-7: Emulator Window Showing Reset and Erase Buttons (see Arrows) Figure 1-8:

71M6533-DB Demo Board User’s Manual Page: 27 of 75 ` REV 3 1.9.7 THE PROGRAMMING INTERFACE OF THE 71M6533 Flash Downloader/ICE Interface Signals

71M6533-DB Demo Board User’s Manual Page: 28 of 75 ` REV 3 are 64 bits long and are accessed with )n$$ (read) and )n=hh=ll (write) in the case of

71M6533-DB Demo Board User’s Manual Page: 29 of 75 ` REV 3 XRAM Word Address Default Value Name Description 0x0B 0 PPMC PPM/C*26.84. Linear temper

71M6533-DB Demo Board User’s Manual Page: 3 of 75 ` REV 3 Table of Contents 1 GETTING STARTED...

71M6533-DB Demo Board User’s Manual Page: 30 of 75 ` REV 3 Number Pulse Source Description Number Pulse Source Description 8 I0SQSUM 26 VAR1SUM

71M6533-DB Demo Board User’s Manual Page: 31 of 75 ` REV 3 MPU STATUS WORD The MPU maintains the status of certain meter and I/O related variables

71M6533-DB Demo Board User’s Manual Page: 32 of 75 ` REV 3 Status Word Bit Name DESCRIPTION 20 POWER_BAD Set after reset when the read of t

71M6533-DB Demo Board User’s Manual Page: 33 of 75 ` REV 3 0x40 Vah_B Total VA hours in element 1 0x32 Whi_C Total Watt hours consumed through ele

71M6533-DB Demo Board User’s Manual Page: 34 of 75 ` REV 3

71M6533-DB Demo Board User’s Manual Page: 35 of 75 ` REV 3 2 APPLICATION INFORMATION 2.1 CALIBRATION THEORY A typical meter has phase and gai

71M6533-DB Demo Board User’s Manual Page: 36 of 75 ` REV 3 From the voltage measurement, we determine that 1. 1VXVEA We use the other two mea

71M6533-DB Demo Board User’s Manual Page: 37 of 75 ` REV 3 Finally, we calculate the new calibration current gain coefficient, including

71M6533-DB Demo Board User’s Manual Page: 38 of 75 ` REV 3 12. )2)(60tan()(tan1800300601EEEES Now that we know the AXV, AXI, and S

71M6533-DB Demo Board User’s Manual Page: 39 of 75 ` REV 3 Figure 2-2: Phase Angle Definitions The calibration procedures described below should

71M6533-DB Demo Board User’s Manual Page: 4 of 75 ` REV 3 2.5 Testing the Demo Board ...

71M6533-DB Demo Board User’s Manual Page: 40 of 75 ` REV 3 2.2.2 CALIBRATION PROCEDURE WITH FIVE MEASUREMENTS Each phase is calibrated individua

71M6533-DB Demo Board User’s Manual Page: 41 of 75 ` REV 3 Step 1: Basic Calibration: After making sure VFEED_A, VFEED_B, and VFEED_C are zero, pe

71M6533-DB Demo Board User’s Manual Page: 42 of 75 ` REV 3 A spreadsheet is also available for Rogowski coil calibration (see Figure 2-5). Data en

71M6533-DB Demo Board User’s Manual Page: 43 of 75 ` REV 3 Figure 2-4: Calibration Spreadsheet for Five Measurements

71M6533-DB Demo Board User’s Manual Page: 44 of 75 ` REV 3 Figure 2-5: Calibration Spreadsheet for Rogowski coil

71M6533-DB Demo Board User’s Manual Page: 45 of 75 ` REV 3 2.2.5 COMPENSATING FOR NON-LINEARITIES Nonlinearity is most noticeable at low currents

71M6533-DB Demo Board User’s Manual Page: 46 of 75 ` REV 3 2.3 POWER SAVING MEASURES In many cases, especially when operating the 71M6533

71M6533-DB Demo Board User’s Manual Page: 47 of 75 ` REV 3 Figure 2-8: External Components for RESETZ 2.4.3 OSCILLATOR The oscillator of the 71M

71M6533-DB Demo Board User’s Manual Page: 48 of 75 ` REV 3 Figure 2-10: EEPROM Circuit 2.4.5 LCD The 71M6533 has an on-chip LCD controller

71M6533-DB Demo Board User’s Manual Page: 49 of 75 ` REV 3 Figure 2-12: Optical Interface Block Diagram The IR diode should be connected between

71M6533-DB Demo Board User’s Manual Page: 5 of 75 ` REV 3 List of Tables Table 1-1: Selectable Display Options ...

71M6533-DB Demo Board User’s Manual Page: 50 of 75 ` REV 3 Figure 2-13: Meter with Calibration System Maxim’s Teridian Demo Boards are not calibr

71M6533-DB Demo Board User’s Manual Page: 51 of 75 ` REV 3 Figure 2-15: Wh Load Line in Differential Mode at Room Temperature 2.5.2 EEPROM Testi

71M6533-DB Demo Board User’s Manual Page: 52 of 75 ` REV 3 2.5.4 HARDWARE WATCHDOG TIMER The hardware watchdog timer of the 71M6533 is disabled w

71M6533-DB Demo Board User’s Manual Page: 53 of 75 ` REV 3 >RI21=25 Writes the original value back to LCD_CLK 2.6 APPLICATION NOTES Please c

71M6533-DB Demo Board User’s Manual Page: 54 of 75 ` REV 3

71M6533-DB Demo Board User’s Manual Page: 55 of 75 ` REV 3 3 HARDWARE DESCRIPTION 3.1 71M6533-DB DEMO BOARD DESCRIPTION: JUMPERS, SWITCHES AND

71M6533-DB Demo Board User’s Manual Page: 56 of 75 ` REV 3 Item # Reference Designator Name Use 12 J12 OPT_RX, VBAT, OPT_TX, GND Five-pin header f

71M6533-DB Demo Board User’s Manual Page: 57 of 75 ` REV 3 Item # Reference Designator Name Use 37 J17 -- Alternative connector for the ICE interf

71M6533-DB Demo Board User’s Manual Page: 58 of 75 ` REV 3 3.2 BOARD HARDWARE SPECIFICATIONS PCB Dimensions  Diameter 6.5” (165.1mm)  Thick

71M6533-DB Demo Board User’s Manual Page: 59 of 75 ` REV 3 4 APPENDIX This appendix includes the following documentation, tables and drawings: 7

71M6533-DB Demo Board User’s Manual Page: 6 of 75 ` REV 3

71M6533-DB Demo Board User’s Manual Page: 60 of 75 REV 3 4.1 71M6533-DB DEMO BOARD ELECTRICAL SCHEMATIC Figure 4-1: 71M6533-DB Demo Board: Ele

71M6533-DB Demo Board User’s Manual Page: 61 of 75 REV 3 Figure 4-2: 71M6533-DB Demo Board: Electrical Schematic 2/3 R1440ICP_INICN_IN R1330R651

71M6533-DB Demo Board User’s Manual Page: 62 of 75 REV 3 Figure 4-3: 71M6533-DB Demo Board: Electrical Schematic 3/3TitleSize Document Number Re

71M6533-DB Demo Board User’s Manual Page: 63 of 75 REV 3 4.2 71M6533-DB DEMO BOARD BILL OF MATERIAL Table 4-1: 71M6533-DB Demo Board: Bill of M

71M6533-DB Demo Board User’s Manual Page: 64 of 75 REV 3 4.3 71M6533-DB DEMO BOARD PCB LAYOUT Figure 4-4: 71M6533-DB Demo Board: Top View

71M6533-DB Demo Board User’s Manual Page: 65 of 75 REV 3 Figure 4-5: 71M6533-DB Demo Board: Top Copper

71M6533-DB Demo Board User’s Manual Page: 66 of 75 REV 3 Figure 4-6: 71M6533-DB Demo Board: Middle Layer 1 (Ground Plane)

71M6533-DB Demo Board User’s Manual Page: 67 of 75 REV 3 Figure 4-7: 71M6533-DB Demo Board: Middle Layer 2 (Supply Plane)

71M6533-DB Demo Board User’s Manual Page: 68 of 75 REV 3 Figure 4-8: 71M6533-DB Demo Board: Bottom Copper

71M6533-DB Demo Board User’s Manual Page: 69 of 75 REV 3 Figure 4-9: 71M6533-DB Demo Board: Bottom View

71M6533-DB Demo Board User’s Manual Page: 7 of 75 ` REV 3 1 GETTING STARTED 1.1 GENERAL The Teridian™ 71M6533-DB Demo Board is a demonstration

71M6533-DB Demo Board User’s Manual Page: 70 of 75 REV 3 4.4 71M6533 PIN-OUT INFORMATION Power/Ground/NC Pins: Name Type Pin # Description GND

71M6533-DB Demo Board User’s Manual Page: 71 of 75 REV 3 Digital Pins: Name Type Pin # Description COM3, COM2, COM1, COM0 O 21, 20, 19, 18 LCD

71M6533-DB Demo Board User’s Manual Page: 72 of 75 REV 3 Name Type Pin # Description OPT_RX/DIO1 I/O 91 Multi-use pin, configurable as either Op

71M6533-DB Demo Board User’s Manual Page: 73 of 75 REV 3 1Teridian71M653323456789101112131415161718192021222324253132333435363738394041424344454

71M6533-DB Demo Board User’s Manual Page: 74 of 75 REV 3

71M6533-DB Demo Board User’s Manual Page: 75 of 75 REV 3 5 REVISION HISTORY Revision Date Description 1.0 1-30-2008 Initial release 1.1 2-5-200

71M6533-DB Demo Board User’s Manual Page: 8 of 75 ` REV 3 1.5 COMPATIBILITY This manual applies to the following hardware and software revisions:

71M6533-DB Demo Board User’s Manual Page: 9 of 75 ` REV 3 Figure 1-1: Block Diagram for the 71M6533-DB Demo Board with Debug Board 1.7.1 SETUP W