71M6521 Demo Board User’s Manual
Revision 2.18
© 2005-2009 TERIDIAN Semiconductor Corporation
Page: 11 of 111
Figure 1-2: Demo Board: Ribbon Cable Connections
The 71M6521 Demo Board block diagram is shown in Figure 1-3. It consists of a stand-alone meter Demo
Board and an optional Debug Board. The Demo Board contains all circuits necessary for operation as a
meter, including display, calibration LED, and power supply. The Debug Board, when not sharing a power
supply with the meter, is optically isolated from the meter and interfaces to a PC through a 9 pin serial port.
Connections to the external signals to be measured, i.e. scaled AC voltages and current signals derived from
shunt resistors or current transformers, are provided on the rear side of the Demo Board.
It is recommended to set up the Demo Board with no live AC voltage connected, and to
connect live AC voltages only after the user is familiar with the demo system.
Power
Ribbon Cable
Debug Board
Demo
Board
Power
Host PC
