Hardy HI 6500 Series - Manual (Page 34)

26 Chapter 3
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HI 6010 Summing Card Diagram
NOTE When connecting a Hardy Summing Box to the HI 6500, you must remove the two
factory installed jumpers on pins 1 & 2 and on pins 5 & 6 on the module and install
C2 and sense wires. C2 wires carry the commands for Integrated Technician and the
C2 calibration information.