Inline PSU Tester
– User’s Guide
Page 3
Introduction
The PSU Tester can be used to diagnose and troubleshoot your desktop power supply.
With the PSU Tester, you can:
•
Check power supply voltages are within the approved limits.
•
Record the minimum and maximum of voltage and current for each voltage rail.
•
Measure the exact power drawn from each voltage rail.
•
Measure the total power drawn from the power supply.
•
Test for ripple on main voltage rails
(1)
.
•
Measure and check Power-on Time (T1), Rise Time (T2), PWR_OK delay (T3)
and Power-down warning (T6) and check them against the specification.
•
Measure the minimum slew rate on main voltage rails
(1)
during power up.
•
Check that the turn-on slope of main voltage rails
(1)
is positive during power up
(smooth power up).
•
Check power sequencing is correct
1. Main voltage rails are +12V1DC, +12V2DC (12V CPU), +5VDC and +3.3VDC