Preliminary Information
AMD Athlon™ 64 and AMD Opteron™ Processors
Thermal Design Guide
26633 Rev.
3.03 September
2003
A.2.1.3 Test
Board
Any printed circuit board made for use with the Socket 754 processor family should be able to
accept clip load testing. Be sure the fixture does not interfere with any components that may be
mounted to the PCB in the socket window. Additionally, allowance for the mounting hole pattern
and component keepout areas must be followed to avoid tainted load measurements.
A.2.1.4 Voltage
Source
A precision voltage source should be used to power the load cell. The Entran ELW-series load
cells require 15 V excitation. Make the connections between the voltage source and the red and
black wires on the load cell.
A.2.1.5 Voltmeter
A precision voltmeter or multimeter is needed to measure the output from the load cell. Connect
the meter to the green and white wires on the load cell. Each load cell will have a unique
calibration coefficient to convert the millivolt reading into force. The Entran ELW-D1 typically
has a value near 1 mV/lb.
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Appendix Appendix
A