Inline PSU Tester – User’s Guide Page 13
PASS means voltage is currently within the approved limits, but an under-voltage was
detected previously.
FAIL means voltage is outside the approved limits.
Keypad
The Tester has a membrane keypad with four keys.
Power On/Off button: This button forces a power-up by asserting the PS_ON pin to
logic low (PS_ON is active low). Please note that this button shouldn’t be used when
the PSU Tester is inline configuration. Instead, the PC should be turned on/off using
the “standby” button from the computer case.
Up (Page Up) and Down (Page Down) buttons: These two buttons are used to
navigate between different pages. The pages are listed below:
• Default Page: Displays the total power as well as the voltages and currents
status.
• Voltage 24-Pin: This page displays the voltage for each rail on the 24-Pin
connector (i.e. +12V1DC, +5VDC, +3.3VDC, +5 VDCSB and -12VDC).
• Voltage CPU and PCIe: This page displays the +12V2DC (+12V CPU)
voltage on the 8-Pin CPU and the +12V PCIe on the 6-Pin PCIe connectors.
• Voltage SATA: This page shows the voltage for each rail on the 15-Pin SATA
connector (i.e. +12VDC, +5VDC, +3.3VDC). Please note that the tester
doesn’t measure the actual voltages on the SATA connector, instead it
displays the voltage on +12V1DC, +5VDC, +3.3VDC as these rails are almost
always connected to SATA voltage rails.
• Ripple 24-Pin: This page displays the ripple in millivolts on +12V1DC,
+5VDC, +3.3VDC and +12V2DC (+12V CPU).
• Timings (T1, T2, T3 and T6): This page shows the timings for +12V1DC,
+5VDC, +3.3VDC and +12V2DC (+12V CPU).
• T2 Min Slew Rate: This page displays the minimum slew rates across all 5 ms
segments during power-up for +12V1DC, +5 VDC, +3.3VDC and 12V2DC
(+12V CPU).
• Turn-on slope: If there was a negative slope during power-up on +12V1DC,
+5VDC, +3.3VDC and +12V2DC (+12V CPU) rails, this page will show a
Fail.
• Power Sequencing: The +12VDC and +5VDC output levels must always be
equal to or greater than the +3.3VDC output during power-up and normal
operation. If this criterion fails, the ‘V’ column shows a red circle. Also, the
time between the +12 VDC or +5VDC output reaching its minimum in-
regulation level and +3.3VDC reaching its minimum in-regulation level must
be ≤ 20 ms. If this criterion fails, the ‘T’ column shows a red circle.
Mode: This button allows to change the mode of details on each page. Pressing this
button on a page, allows you to see more details. Using this button, you can change
the mode from Voltage to Current or Power while in a Voltage page or you can see
the timing values while in Timing page.
To Next Page
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