Here you can see that I
have the HX620W hooked up to a SunMoon SM-8800 power supply load tester.
and 8-pin EPS connector are hooked up and there is already an 11A load on
the +12V leads of these connectors. There is also a 12A load on the
+3.3V rail, 15A load on the +5V rail, 2A load on the +5VSB and 0.5A load
on the -12V. In other words, the power supply is running with a 250W load
on it as if it were plugged into a computer.
What I do from here is
gradually increase the load on the PCI-e connector from 0A to 5A to 7A to
9A to, finally, 11A, record the voltages with the DMM and log them in Excel.
The load tester has test
points on it so the user can get a DMM reading at the load. In the above
photo I have the positive (+) test probe testing the 12V at the load.
load tester actually has a built in voltmeter (note the 4.93V on the +5VSB
in the above photo) and that's what I typically refer to when I use my load
tester. But because I'm
the PCB and connector voltages, I wanted to use the same instrument to measure