Application Guide

ManualsBrandsSUNIX IT ManualsComputers & AccessoriesSUNIX IT USB 3.1 Dual Port USB-C PCI Express (w/Alternate-Mode) (UPD2018)

34

7-2 USB Port Loading Test

Single port power loading

Result

Port

0A

1.5A

UP Port

5.21V

4.92V

PASS

Down Port

5.21V

4.89V

PASS

Dual port power loading

Result

Port

1.5A

UP Port

4.89V

PASS

Down Port

4.87V

*Note：

USB3.0 PASS = Power Voltage Range 4.45V~5.25V on loading。

USB2.0 PASS = Power Voltage Range 4.75V~5.25V on loading。

Both USB2.0 and USB3.0 specify a maximum droop voltage of 330mV

*Accessing each USB port one by one by using power loading meter.

*Source from PCI-E Bus.

B. Single Port Drop Test Block Diagram:

Motherboard PCI-E

4" USB3.0 cable

Oscilloscope

DC POWER

LOAD METER

Type-C

Type-C

DP