USB 2.0 Electrical
Compliance Test
User Manual
User Manual
EN01A

CONTENT
1Introduction ....................................................................................................... 22

Test Items ......................................................................................................... 33

Test Equipment ................................................................................................. 54563.1

SIGLENT Provision .....................................................................................................53.2

Additional Equipment...................................................................................................5Fixture .............................................................................................................. 6
4.1

Delivery Checklist ........................................................................................................64.2

Introduction to Functional Modules .............................................................................74.2.1

Signal board ........................................................................................................74.2.2

Load Board ..........................................................................................................84.2.3

Test Point .............................................................................................................8

Compliance Test Software .............................................................................. 105.1

Tests Config ...............................................................................................................105.2

Results .......................................................................................................................145.3

Report Setting ............................................................................................................15

USB IF Official Application .............................................................................. 16

USB 2.0 Electrical Compliance Test User Manual11Introduction

FX-USB2 is a test fixture launched with the USB 2.0 compliance test function of SDS7000A digital
oscilloscope, and the two together can easily and quickly complete the USB-IF test on all electrical
items of hosts, devices and hubs. This manual contains introductions to the FX-USB2 and USB 2.0compliance test.

2USB 2.0 Electrical Compliance Test User Manual

2Test Items

FX-USB2 and SDS7000A's USB 2.0 compliance test function combine to support the following USB
2.0 electrical compliance measurements:
Host Tests
High-Speed DS Signal Quality (EL_2, EL_3, EL_6, EL_7)
High-Speed DS Packet Parameters (EL_21, EL_22, EL_23, EL_25, EL_55)
High-Speed DS Chirp Timing (EL_33, EL_34, EL_35)
High-Speed DS Suspend Resume (EL_38 EL_39, EL_41)
High-Speed DS Not Driven Voltage Levels (EL_8, EL_9)
Full-Speed DS Signal Quality
Low-Speed DS Signal Quality
DropDroop

Device Tests
High-Speed US Signal Quality (EL_2, EL_4/EL_5, EL_6, EL_7)
Far-end for tethered hubs (EL_5)
Near-end for un-tethered hubs (EL_4)
High-Speed US Packet Parameters (EL_21, EL_22, EL_25)
High-Speed US Chirp Timing (EL_28, EL_29, EL_31)
High-Speed US Suspend Resume (EL_38 EL_39, EL_40 EL_41)
High-Speed to Reset (EL_27, EL_29, EL_31)
Suspend to Reset (EL_28, EL_29, EL_31)
High-Speed US Not Driven Voltage Levels (EL_8, EL_9)
High-Speed US Receiver Sensitivity (EL16, EL17, EL18)
Full-Speed US Signal Quality
Low-Speed US Signal Quality
Back VoltageInrush



Hub Tests
High-Speed Signal Quality
Downstream: EL_2, EL_6, EL_7, EL_47
Upstream: EL_2, EL_6, EL_7, EL_46
High-Speed Packet Parameters
Downstream: EL_21, EL_22, EL_23, EL_25, EL_55
Upstream: EL_21, EL_22, EL_25

USB 2.0 Electrical Compliance Test User Manual3

High-Speed Chirp Timing
Downstream: EL_33, EL_34, EL_35
Upstream: EL_28 EL_29, EL_31
High-Speed Suspend Resume
Downstream: EL_38 EL_39, EL_41
Upstream: EL_38 EL_39, EL_40 EL_41
Upstream High-Speed to Reset (EL_27, EL_29, EL_31)
Upstream Suspend to Reset (EL_28, EL_29, EL_31)
High-Speed Not Driven Voltage Levels
Upstream / Downstream: EL_8, EL_9
High-Speed US Repeater (EL_42, EL_43, EL_44, EL_45, EL_48)
High-Speed DS Repeater (EL_42, EL_43, EL_44, EL_45, EL_48)
High-Speed US Receiver Sensitivity
Full-Speed Signal Quality (Upstream / Downstream)
Low-Speed Signal Quality (Upstream / Downstream)
Drop
Droop
InrushBack Voltage

4

USB 2.0 Electrical Compliance Test User Manual

3

Test Equipment

The following equipment is required for complete USB 2.0 compliance test.

3.1


SIGLENT Provision
Oscilloscope (SDS7000A): >2GHz BW, with USB 2.0 compliance software (SDS7000A-CTUSB2) activated as the USB 2.0 electrical compliance analysis tool.

Fixture (FX-USB2): USB 2.0 electrical compliance test fixture that guides devices and hubs tothe relevant test state and provides test points.

Differential Probe (SAP2500D or SAP5000D): 2GHz or higher bandwidth for HS tests.

Single-ended probe (SAP2500): 2GHz or higher bandwidth for HS/FS/LS tests.

Low Bandwidth Probe: 500MHz bandwidth for HS (except Packet Parameters)/FS/LS tests.

Current Probe: for upstream inrush test only.

Arbitrary Waveform Generator (SDG7000A): for HS trigger sensitivity test only.

3.2

Additional Equipment

Certified High-Speed USB self-powered hub (4 ea.): for FS/LS tests.



Certified Full-Speed USB self-powered hub: for FS/LS tests.

5 meter USB cables Type-A to Type-B male (6 ea.): for FS/LS tests.



1 meter USB cables Type-A to Type-B male (quantity depending on test items): for HS/FS/LStests.



Certified Low-Speed trigger device (e.g. USB mouse): for LS tests.



Certified Full-Speed trigger device: for FS tests.



Certified High-Speed trigger device (e.g. USB flash drive): for HS tests.

Computer (USBHSET installed): for HS host tests.

USB 2.0 Electrical Compliance Test User Manual54Fixture

The FX-USB2 is a test fixture launched to match the USB 2.0 compliance test function of theSDS7000A. The processor on the board can control the devices and hubs to enter the test mode,
reset, suspend, etc. according to the user's test requirements, simplifying the test process.
Host tests require the host under test to be placed into test mode autonomously. For related software,please refer to the section "USB IF Official Application".

4.1

Delivery Checklist

The FX-USB2 is placed inside a black suitcase. Please verify that all items listed on the packing list
have been delivered. If you note any omissions or damage, please contact SIGLENT customer
service center or distributor as soon as possible. If you fail to contact us immediately in case ofomission or damage, we will not be responsible for replacement.

6

Item

Quantity

User manual

1

Signal board (USBTF_SQ)

1

Load board (USBTF_R)

1

SMA cable

2

BNC-SMA adapter

2

Short type-A to type-B cable2

1 meter type-A to type-B cable250Ω terminal (SMA)2

USB 2.0 Electrical Compliance Test User Manual

4.2

Introduction to Functional Modules

FX-USB2 includes 2 boards, the signal board (USBTF_SQ) and the load board (USBTF_SR).
4.2.1

Signal board

The following figure shows the various modules of the signal board, followed by a general descriptionof the role played by each module in the compliance test.

Controller: In device tests and hub tests, it controls DUT or hub into test mode, reset, suspend,etc. Also it is the power supply port for the entire fixture.

SQ Device: HS signal quality, packet parameters, suspend, reset, and not-driven J/K voltage test
modules for upstream facing ports.

Sensitivity Receiver: External signal input point in upstream facing port trigger sensitivity test.

Droop: Provides 100mA dynamic load for downstream facing port droop.

Trigger: Provides test point for downstream facing port packet parameters, suspend, repeat, FS,LS, drop.

Inrush: The upstream facing port inrush test module, and assists the Trigger module to complete
the FS and LS tests.

SQ Host: Downstream facing port HS signal quality test module.

USB 2.0 Electrical Compliance Test User Manual7

4.2.2

Load Board

The load board consists of two sections, nine 100mA/500mA loads controlled by twist switches fordrop and droop test and Back Voltage for back voltage test of upstream facing port.

4.2.3

Test Point

In each module of the fixture, corresponding test points are provided, and the function of each test
point is briefly introduced next.
SMA interface: The SMA interface on the signal board, which is connected to D+ and D-, isconnected to the oscilloscope through the SMA cable to complete the signal quality test.

8USB 2.0 Electrical Compliance Test User Manual

Test probes: Placed in D+, D-, and VBus respectively, as shown below:
J27 connects D+ and D- to provide test points for differential probes, while J29 connects D+ andJ28 connects D-, a GND ground point is also reserved to facilitate the connection of single-endedprobes; J30 connects VBus to facilitate the measurement of its voltage.

USB 2.0 Electrical Compliance Test User Manual

95Compliance Test Software

SDS7000A provides USB 2.0 compliance test function, according toAnalysis>

Compliance

Test > Protocol Type Select USB2.0 > Click ON , you can open the compliance test function
which is divided into three major parts: Tests Config, Results and Report Setting.

5.1

Tests Config

Clicking on Tests Config will pop up the specific test window, as shown in the figure below, which is
divided into six steps according to the test flow: Setup, Test Select, Configure, Connect, Run Test,and Result.
SetupA. Provide three functions of "Recall", "Last" and "Save" for the "Setting".
B. In the "DUT type", select the type of device under test, in which the hub needs to be
distinguished between "Downstream" and "Upstream".
C. Select the rate of the device under test in "Speed select".

10

USB 2.0 Electrical Compliance Test User ManualTest Select: Select the items to be tested in this section.

Configure: The test item selected before will be highlighted in this column, click to configure thecorresponding test item and set the channel for oscilloscope measurement.

USB 2.0 Electrical Compliance Test User Manual11Connect: This column displays the test wiring diagram and test steps, if you select more than
one test item at the same time, it will only display the information of the first item to be tested,
and the wiring diagram of other test items will have a separate page pop-up prompt after theend of the last test item.

Run Test
A. Supports "Continue" and "Stop" options in "Test Failure".
B. Supports "Current" and "Append" options for "Test result".
Click "Run Test" in the lower right corner to start the round.

12

USB 2.0 Electrical Compliance Test User ManualIn the next test flow, follow the pop-up window to complete the test, and the test results will pop up
after all the test items are completed.
If you select multiple test items in one round of test, there will be a pop-up window prompting thewiring mode of the item when you proceed to the next item, and you can go back to the "Configure"column to modify the source of the test item in the middle of the test, and then click "Run Test" in thepop-up window to continue the test.

USB 2.0 Electrical Compliance Test User Manual13

5.2Results

Click "Results" to view the corresponding test results.
The upper half of the section shows the test items, providing the test results for each item as well as
the officially required reference threshold values.
The lower part is the corresponding detail figure, click on the item of interest in the upper part, thelower part can show the corresponding details, click on the figure to view the details.

14

USB 2.0 Electrical Compliance Test User Manual5.3

Report Setting

Click "Report Setting", fill in the relevant test information, select the report type. Click "Preview Report"
to view the effect of the generated report in advance. Click "File Manager" to select the path to saveand click "Save" to save the test results.
Note: When saved in HTML format, a folder will be generated with the HTML file, if you need to copy,
copy both away and keep both under the same path.

The test report includes a summary table of all test results with hyperlinks to the details page, which
includes a screenshot of the associated test.

USB 2.0 Electrical Compliance Test User Manual15

6

USB IF Official Application

USB IF provides software to assist with USB 2.0 electrical compliance test.
USBET20: USB IF official electrical analysis tool that to analyze the signal data captured by theoscilloscope, including signal quality and inrush analysis.
Download address: https://www.usb.org/document-library/usbet20

USBHSET: stand for USB High-speed Electrical Test Tool, configuration software provided by theUSB IF that controls the device under test to enter test mode, send packets, suspend, and reset.
Download address: https://www.usb.org/document-library/usbhset-ehci-64-bit
USBHSET is applicable to Windows 7 and Windows 7 Professional. Before installing, UserAccount Control (UAC) should be disabled in Windows. Choose Start > Control Panel >User Accounts and Family Safety>

User Accounts>

Change User Account Control

Settings . Set the Settings Bar to "Never notify", click "OK", and then restart the computer.

Note: When using the USBHSET software, the corresponding USB hub will be occupied and its
external devices will not work properly.
The main interface of USBHSET is shown as below, the left side provides three choices of device,
hub and host, this manual will only introduce the host related content, if you want to know more aboutit, please go to the following URL to view.
https://www.usb.org/sites/default/files/HSETT_Instruction_0_4_1.pdf

16

USB 2.0 Electrical Compliance Test User ManualChoose "Host Controller/System", click the "Test" button to enter the host test menu.

The Host Control menu provides options for placing the host controller or a device connected to thatcontroller into the electrical test mode. Select the appropriate command from the Port Control orDownstream Device Control Menu. For the root port test, the user must also select the port numberof the port under test.
If the test item is related to the device, observe the PID/VID, select the connected device from theDevice Selection Box, and then click "EXECUTE", if the device cannot be found, please disconnect
the device, insert it and click "Enumerate Bus" again.
USB 2.0 developer documentation is available on the USB Implementers Forum website athttps://www.usb.org/documents

USB 2.0 Electrical Compliance Test User Manual17

About SIGLENTSIGLENT is an international high-tech company, concentrating on R&D, sales,
production and services of electronic test & measurement instruments.

SIGLENT first began developing digital oscilloscopes independently in 2002.
After more than a decade of continuous development, SIGLENT has extended
its product line to include digital oscilloscopes, isolated handheld
oscilloscopes,

function/arbitrary

waveform

generators,

RF/MWsignalgenerators, spectrum analyzers, vector network analyzers, digital multimeters,
DC power supplies, electronic loads and other general purpose test
instrumentation. Since its first oscilloscope was launched in 2005, SIGLENT
has become the fastest growing manufacturer of digital oscilloscopes. We
firmly believe that today SIGLENT is the best value in electronic test &measurement.

Headquarters:SIGLENT Technologies Co., Ltd
Add: Bldg No.4 & No.5, Antongda IndustrialZone, 3rd Liuxian Road, Bao'an District,Shenzhen, 518101, China
Tel: + 86 755 3688 7876
Fax: + 86 755 3359 1582
Email: sales@siglent.com
Website: int.siglent.com

North America:
SIGLENT Technologies America, Inc
6557 Cochran Rd Solon, Ohio 44139
Tel: 440-398-5800
Toll Free: 877-515-5551
Fax: 440-399-1211

Email: info@siglentna.com
Website: www.siglentna.com

Europe:SIGLENT Technologies Germany GmbH
Add: Staetzlinger Str. 7086165 Augsburg, Germany

Follow us on
Facebook: SiglentTech

Tel: +49(0)-821-666 0 111 0
Fax: +49(0)-821-666 0 111 22
Email: info-eu@siglent.com
Website: www.siglenteu.com

18

USB 2.0 Electrical Compliance Test User Manual