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TDSUSBF

USB 2.0 Compliance Test Fixture

ZZZ

Instructions

www.tektronix.com

071-1832-02

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Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication

supersedes that in all previously published material. Speciﬁcations and price change privileges reserved.

TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

Contacting Tektronix

Tektronix, Inc.

14200 SW Karl Braun Drive

P.O. Box 500

Beaverton, OR 97077

USA

For product information, sales, service, and technical support:

In North America, call 1-800-833-9200.

Worldwide, visit www.tektronix.com to ﬁnd contacts in your area.

Warranty

Tektronix warrants that this product will be free from defects in materials and workmanship for a period of

three (3) months from the date of shipment. If any such product proves defective during the warranty period,

Tektronix, at its option, either will repair the defective product without charge for parts and labor, or will provide a

replacement in exchange for the defective product. Parts, modules and replacement products used by Tektronix for

warranty work may be new or reconditioned to like new performance. All replaced parts, modules and products

become the property of Tektronix.

In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration

of the respective warranty period and make suitable arrangements for the performance of service. Customer shall

be responsible for packaging and shipping the defective product to the service center designated by Tektronix, with

shipping charges prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to a

location within the country in which the Tektronix service center is located. Customer shall be responsible for

paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations.

This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate

maintenance and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage

resulting from attempts by personnel other than Tektronix representatives to install, repair or service the product;

b) to repair damage resulting from improper use or connection to incompatible equipment; c) to repair any damage

or malfunction caused by the use of non-Tektronix supplies; or d) to service a product that has been modiﬁed or

integrated with other products when the effect of such modiﬁcation or integration increases the time or difﬁculty

of servicing the product.

THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THE PRODUCT IN LIEU OF ANY

OTHER WARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY

IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE

TEKTRONIX’ RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE

AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY.

TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE OR ANY INDIRECT, SPECIAL, INCIDENTAL,

OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS

ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.

[W5 – 15AUG04]

TDSUSBF USB 2.0 Compliance Test Fixture Instructions i

General Safety Summary

Review the following safety precautions to avoid injury and prevent damage to

this product or any products connected to it. To avoid potential hazards, use this

product only as specified.

Only qualified personnel should perform service procedures.

While using this product, you may need to access other parts of the system. Read

the General Safety Summary in other system manuals for warnings and cautions

related to operating the system.

Use Proper Power Cord. Use only the power cord specified for this product and

certified for the country of use.

Connect and Disconnect Properly. Connect the probe output to the measurement

instrument before connecting the probe to the circuit under test. Disconnect the

probe input and the probe ground from the circuit under test before disconnecting

the probe from the measurement instrument.

Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings

and markings on the product. Consult the product manual for further ratings

information before making connections to the product.

Use Proper AC Adapter. Use only the AC adapter specified for this product.

Use Proper Fuse. Use only the fuse type and rating specified for this product.

Do Not Operate With Suspected Failures. If you suspect there is damage to this

product, have it inspected by qualified service personnel.

Do Not Operate in Wet/Damp Conditions.

Do Not Operate in an Explosive Atmosphere.

Keep Product Surfaces Clean and Dry.

ToAvoidFireor

Personal Injury

General Safety Summary

ii TDSUSBF USB 2.0 Compliance Test Fixture Instructions

Terms in this Manual. These terms may appear in this manual:

WARNING. Warning statements identify conditions or practices that could result

in injury or loss of life.

CAUTION. Caution statements identify conditions or practices that could result in

damage to this product or other property.

Terms on the Product. These terms may appear on the product:

DANGER indicates an injury hazard immediately accessible as you read the

marking.

WARNING indicates an injury hazard not immediately accessible as you read the

marking.

CAUTION indicates a hazard to property including the product.

Symbols on the Product. The following symbols may appear on the product:

CAUTION

Refer to Manual

Double

Insulated

Symbols and Terms

TDSUSBF USB 2.0 Compliance Test Fixture Instructions iii

Compliance Information

This section lists the EMC (electromagnetic compliance) and environmental standards with which the in-

strument complies. The Safety Compliance standard in on page.

EMC Compliance

Meets intent of Directive 2004/108/EC for Electromagnetic Compatibility.

Compliance was demonstrated to the following specifications as listed in the

Official Journal of the European Communities:

EN 61326- 1:2006, EN 61326- 2- 1:2006. EMC requirements for electrical equipment

for measurement, control, and laboratory use. 123

HCISPR 11:2003. Radiated and conducted emissions, Group 1, Class A

HIEC 61000--4--3:2002. RF electromagnetic field immunity

HIEC 61000--4--4:2004. Electrical fast transient/burst immunity

HIEC 61000--4--5:2001. Power line surge immunity

HIEC 61000--4--6:2003. Conducted RF immunity

HIEC 61000--4--11:2004. Voltage dips and interruptions immunity

EN 61000- 3- 2:2006. AC power line harmonic emissions

EN 61000- 3- 3:1995. Voltage changes, fluctuations, and flicker

European Contact..

Tektronix UK, Ltd.

Western Peninsula

Western Road

Bracknell, RG12 1RF

1This product is intended for use in nonresidential areas only. Use in residential areas may cause electromagnetic interference.

2Emissions which exceed the levels required by this standard may occur when this equipment is connected to a test object.

3This product is intrinsically static sensitive. User must not expose device to static discharge.

EC Declaration of

Conformity — EMC

Environmental Considerations

iv TDSUSBF USB 2.0 Compliance Test Fixture Instructions

Complies with the EMC provision of the Radiocommunications Act per the

following standard:

HCISPR 11:2003. Radiated and Conducted Emissions, Group 1, Class A, in

accordance with EN 61326--1:2006 and EN 61326--2--1:2006.

Australia / New Zealand

Declaration of Conformity

—EMC

TDSUSBF USB 2.0 Compliance Test Fixture Instructions 1

TDSUSBF Test Fixture

The TDSUSBF compliance test fixture is a companion product for use with the

TDSUSB Universal Serial Bus (USB 2.0) Compliance Test Package. The

TDSUSBF enables high quality compliance level measurements of the USB 2.0

devices, hosts and hubs. The test fixture supports tests that measure high, full

and low speed signal quality. It also supports inrush, droop, receiver sensitivity,

packet parameter, suspend, resume, reset, and impedance measurements. All are

mandatory for USB 2.0 compliance.

The fixture is shipped as a single circuit board and is organized into three

sections:

HHigh Speed Signal Quality and TDR

HLow/Full Speed Signal Quality and Inrush Current

HAn active load for droop testing and eight switchable 100 mA/500 mA

passive loads and a dynamic 2 Hz switching 100 mA load.

The boundary between these sections is scored so that you can snap these

sections apart for convenience.

You can use the TDSUSBF with the Tektronix TDSUSB2 USB Compliance Test

fixture which can be ordered either as Option USB for the DPO7000,

TDS5000B, TDS6000B/C, or TDS7000B series, or as an upgrade to these

oscilloscopes. Refer to the TDSUSB2 data sheet on www.tektronix.com for

specific compatibility information.

Accessories

The following accessories are included with the fixture. Refer to the Replaceable

Parts List on page 11 for part numbers when ordering replacement parts.

HInstructions

HCable: USB, short ~12.7 cm (5 in) USB cable (A receptacle to a B plug) for

use with devices with a B receptacle

HAdapter: To adapt an A male receptacle to a mini B male plug

TDSUSBF Test Fixture

2TDSUSBF USB 2.0 Compliance Test Fixture Instructions

Test Equipment

The following test equipment is recommended for use with the fixture:

HA DPO7254 or TDS7254B or greater bandwidth oscilloscope is required to

test the high-speed USB hosts, devices, or hubs

HA DPO7054 or TDS5034B or greater bandwidth oscilloscope is required to

test low-speed and full-speed USB devices and hubs

HA P6248 1.7 GHz differential probe or greater bandwidth probe1

HA P6245 1.5 GHz 10X Probe (3 each)1or TAP1500 1.5 GHz Active Probe

(3 each) for use with the DPO7000 series oscilloscopes

HA TCP202 current probe1or TCP0030 current probe for use with the

DPO7000 series oscilloscopes

1Requires TPA to BNC adapter for use on DPO7000 series oscilloscopes

Table 1: Probe type and Compatible oscilloscopes

Probe type TDS series oscilloscopes DPO series oscilloscopes

High Bandwidth Differential Probe P6248 or greater bandwidth probe

P7300 series compatible with TDS7254B or

greater bandwidth and TDS6000B/C series

The P6248 probe requires TAP BNC

adapter. P7000 series probes are not

compatible with the DPO7000 series

High Bandwidth Single--Ended Active

Probe

P6245 P6245 requires TAP BNC adapter or

TAP1500 Active probe.

Current Probe TCP202 TCP202 requires TAP BNC adapter or

TCP0030

HA TDS8200 oscilloscope with an 80E04 TDR sampling module.

A USB TDR test utility is available at the following link:

http://www.tek.com/site/sw/detail/1,1059,2207,00.html

HAn AWG615 or AWG710B Arbitrary Waveform Generator or

a DTG5274 or DTG5078 mainframe with optional DTMG21

HHigh quality SMA cables ~ 30.48 cm (12 in) and 12 dB attenuators (4 each

Tekronix part number 011-0069-03). For receiver sensitivity testing, use

attenuators to increase the channel amplitude resolution.

TDSUSBF Test Fixture

TDSUSBF USB 2.0 Compliance Test Fixture Instructions 3

Installation

To use the test fixture, refer to Figure 1 on page 6, and do the following:

CAUTION. To prevent damage to the test fixture, always work at a static-approved

workstation when handling the fixture.

1. Set the fixture on a nonconductive work surface.

CAUTION. To prevent damage to TDR heads, the board must be powered on in

the following sequence.

2. To operate various relays, the TDSUSBF high-speed signal quality section

requires a 5-volt power supply. Depending on the jumper selection on the

test fixture, you can select one of the following power options:

HUSB host-supplied Vbus power.

HUser-supplied 5-volt power supply. The external power supply must be

capable of providing 500 mA.

Recommended or equivalent: ITE Power Supply, Ault Inc., part number

PW10DEA0503F01.

To select user-supplied 5-volt power, place the jumper between the center pin

and the pin marked JACK of J91. Connect the power supply cable to the DC

Power In jack, J35 located at the bottom of the board.

To select USB Vbus power, place the jumper between the center pin and the

pin marked USB of J91. Connect a USB cable from the Host supplying

Vbus power to J92.

3. Check that either the TEST or INIT LED is on. If it is not, remove the power

supply cable from the DC Power In jack or from the USB connector, and

check for shorts.

4. Place the switch S6 in the INIT position. The INIT status LED illuminates.

5. Connect the board for specific tests as described in Table 2 on page 7.

TDSUSBF Test Fixture

4TDSUSBF USB 2.0 Compliance Test Fixture Instructions

6. Set the DUT (Device Under Test) to the proper test state.

For example, in a TDR upstream test, the DUT must be configured to

SE0_NAK test mode. Otherwise, DUT transmissions can damage test

equipment connected to the fixture.

For all TDR tests, you should verify with a DMM that the DC bias level is

less than 10 mV from D+ to ground and from D-- to ground.

7. Place the switch S6 in the TEST position. Verify that the TEST status LED

is on.

8. Perform the test steps as required for your specific test.

9. After finished testing, place the switch S6 in the INIT position and discon-

nect the power supply cable from the DC Power In jack or disconnect the

USB cable providing power to the test fixture.

TDSUSBF Test Fixture

TDSUSBF USB 2.0 Compliance Test Fixture Instructions 5

Connections and Switch Settings

Use Figure 1 on page 6 and Table 2 on page 7 to prepare the fixture for

specific tests.

NOTE. Other Tektronix probes may also be suitable. Refer to the Test Equipment

section of this document to verify compatibility of alternative probes.

For more tests, the following oscilloscope configuration is recommended:

CH 1—P6248 Differential probe connected to D+ and D-- (High speed) or

P6245 single-ended probe connected to D+ (Low Speed (LS)/Full Speed

(FS))

CH 2—P6245 single-ended probe connected to D-- (LS/FS)

CH 3—On the adjacent channel trigger source (LS/FS), P6245 single-ended

probe connected to D+ for full speed testing, D-- for low speed testing

CH 4—Current probe for Inrush measurements

The Initialize and Test switch (S6) is a two-position switch used to place the test

fixture into initialize status or to test configurations for the following tests:

HDevice high speed TDR

HDevice high speed receiver sensitivity

HDevice high speed signal quality

For upstream high speed signal quality testing:

There are two sets of stake pins in the high-speed signal quality segment.

The set of stake pins (J310) adjacent to the relay pads are intended for use in

Signal Quality testing. The set of stake pins (J34) closest to the A receptacle

is intended for use in Packet Parameter, Suspend, Resume and Reset tests.

In the initialize position, the signal is routed through the fixture, from the

input to the output connectors to permit placing the DUT into test packet or

other test modes. In this mode, the signal is not present on the signal quality

pins (J310) next to the relay pads until the INIT/Test switch is placed into

the test position. To verify whether the signal is present in INIT mode, place

your probe on the set of stake pins (J34) next to the A receptacle. Return the

probe to the signal quality pins to conduct the signal quality test.

In the test position, the signal is passed from the DUT and is terminated into

precision 45 ohm resistors on the fixture. To probe the signal, connect the

middle two header pins located near the relay pads.

Switch S6 (Init/Test)

TDSUSBF Test Fixture

6TDSUSBF USB 2.0 Compliance Test Fixture Instructions

Key

Switch function

Test name/connector

A Dongle connector

B Receptacle

A Receptacle

J81

J71

J70

J12

J16

J19

J28

J34

J92

J37

J32

J26

J14

J20

J10

J72

J61

J150

J35

J91

Inrush current test state:

Discharge, Off, On

High speed through connection

for packet parameter, suspend,

resume and reset

Droop Test Load

Inrush Current probe

test loop

High Speed Receiver

Sensitivity

High speed Device Signal

Quality connection

Jumper for power selection (USB Vbus or user supplied 5V)

A receptacle on the back of the board

Init LED

Switches Connectors Loads

S81

S71

7J71

J81

Switches Connectors Loads

S4 2

S3 J3 4

S51 6

J150

S61 J61 8

J310

Signal Quality -- HS Upstream

High Speed Device TDR

LS/FS Downstream Signal

Quality (Device)

Inrush Current,LS/FS

Upstream Signal Quality

Adjacent Trigger and Droop

High Speed Host TDR

High speed Host Signal Quality

DC Power in Jack

S6 -- Init/Test switch

Figure 1: Fixture connections and switch functions

TDSUSBF Test Fixture

TDSUSBF USB 2.0 Compliance Test Fixture Instructions 7

Use Table 2 and Figure 1 on page 6 to prepare the fixture for specific tests.

Each test fixture circuit (except the active and passive loads) contains a 4-pin

header. The outer pins are ground and the inner two pins are labeled D+ and D--.

Table 2: USB signal connections and switch settings

Test1

Upstream (Host)

connector number/type

Downstream (DUT)

connector number/type Switch number and setting

Host TDR2J20 / A dongle N/A N/A

Device TDR2J26 / B receptacle J19 / A receptacle S6 switch to INIT, and then TEST

Host

Signal Quality

J16 / A dongle N/A N/A

HS Signal

Quality Upstream

J37 / B receptacle J34 / A receptacle S6 switch to INIT, and then TEST

LS, FS Signal

Quality Up-

stream, Adjacent

Trigger3

J10, J14 / A receptacle J7, J12 / A dongle S5switchtoOn

HS Receiver

Sensitivity2

J32 / B receptacle J28 / A receptacle S6 switch to INIT, and then TEST

LS, FS Down-

stream

J72 / B receptacle J70 / A receptacle3N/A

Droop Test Load J5 / B receptacle

Inrush Current J7/ A dongle J10/ A receptacle S5 switch between discharge/ off / on

1LS = Low Speed, FS = Full Speed, HS = High Speed

2See Table 3 for SMA connections

3Connected to a load using a USB cable

Signal Connections

TDSUSBF Test Fixture

8TDSUSBF USB 2.0 Compliance Test Fixture Instructions

The SMA connectors on the fixture are used to connect additional test equipment

to the test fixture.

Table 3 lists the details of where the SMA connectors are used. See Figure 1 on

page 6 for connector locations.

Table 3: SMA connections

Test Connector number and connection Connector number and connection

High Speed Receiver Sensitivity J27 (D+) to DTGM21, Ch 0 J24 (D--) to DTG21, Ch 1

High Speed Device TDR J23 to TDR Sampling Module, Ch 1 J22 to TDR Sampling Module, Ch 2

High Speed Host TDR J17 to TDR Sampling Module, Ch 1 J18 to TDR Sampling Module, Ch 2

SMA Connections

TDSUSBF Test Fixture

TDSUSBF USB 2.0 Compliance Test Fixture Instructions 9

Two types of loads (passive and active) are provided on the fixture for you to

include in different tests and configurations. Eight separate passive loads, #1 to

#8, are switchable between 100 mA and 500 mA.

WARNING. To avoid personal injury, do not touch the load resistors when using

the 500 mA load positions. The load resistors can become very hot.

The droop test load is an active load that switches between an open circuit

condition and 100 mA, at approximately a 2 Hz rate.

All loads connect through B-type receptacles that are mounted on the back of the

test fixture.

NOTE. Switch numbers do not follow load numbers. For example, Switch 4

controls Load #2. See Table 4 for the correct switch/load combinations.

Use Table 4 and Figure 1 on page 6 to configure loads for specific tests.

Table 4: Load connections and switch settings

Load number Connector number/type Switch number Switch positions

#1 J1 / B receptacle S1 100 mA / 500 mA

#2 J4 / B receptacle S4 100 mA / 500 mA

#3 J2 / B receptacle S2 100 mA / 500 mA

#4 J3 / B receptacle S3 100 mA / 500 mA

#5 J81 / B receptacle S81 100 mA / 500 mA

#6 J150 / B receptacle S51 100 mA / 500 mA

#7 J 71/ B receptacle S71 100 mA / 500 mA

#8 J61/ B receptacle S61 100 mA / 500 mA

Droop test J5 / B receptacle N/A 0 mA to 100 mA at ~2 Hz rate

Load Connections

TDSUSBF Test Fixture

10 TDSUSBF USB 2.0 Compliance Test Fixture Instructions

Specifications

This section contains the specifications of the TDSUSBF Test Fixture. All

specifications are guaranteed unless noted as typical. Typical specifications are

provided for your convenience, but are not guaranteed.

Table 5: Specifications

Specification Description

Input voltage rating +5.0 V DC, ±0.25 V

Power consumption, typical 1W

Fuse rating 0.5 A, 60 V, Polyswitch resettable fuse

Operating temperature +15 °Cto+35°C(59°Fto95°F)

TDSUSBF Test Fixture

TDSUSBF USB 2.0 Compliance Test Fixture Instructions 11

Replaceable Parts List

This section contains a list of the replaceable parts for the fixture. Use this list to

identify and order replacement parts.

Replaceable Parts

Part ID

Tektronix part

number

Serial no. ef-

fective

Serial no.

discont’d Qty Name & description

A dongle 174--4662--01 5 CABLE ASSY,SP:USB,TYPE A CONN TO STRIPPED END

A receptacle 131--6277--00 3 CONN,RIBBON:PCB,USB,SERIESA,FEMALE,RTANG,

1 X 4,2.5MM CTR,7.01MM H X 2.29MM TAIL,PALLADIUM

B receptacle 131--7307--00 8 CONN:PCB,USB,SERIESB,FEMALE,RTANG,

1 X 4,2.5 MM CTR,0.433” H X 0.110 TAIL,SHLD,GOLD F

S1--4,S6,S51

,S61,S71,S8

260--2769--01 5 SWITCH,TOGGLE:SPDT,ON--NONE--ON,MEDIUM ACTUATOR,THREADED-

BUSHING,PCMOUNT V BRACKET, SILVER CONTACT

S5 260--2767--01 1 SWITCH,TOGGLE:SPDT,3A AT 28VDC,ON--OFF--ON,STD 0.370” HIGH

ACTUATOR,THREADED BUSHING,PCB MOUNT V BRACKET

F1 159--0412--00 1 FUSE,THRM,CHIP:SELF RESETTING FUSE,0.5A HOLD,1.0A TRIP,60V

MAX,SMD050,T&R,

LEDs

K1--3

150--1049--00

148--0331--00

DIODE,OPTO:LED;RED/GREEN,232RG80317

RELAY, ARMATURE:2FORMC,SINGLE SIDE

STABLE,28V,0.25A,COIL5VDC,64OHM

Shunt 131--4356--00 1 CONN,SHUNT; SHUNT/SHORTING,;FEMALE,1 X 2,0.1 CTR,0.63

H,BLK,W/HANDLE,JUMPER,30 GOLD

STANDARD ACCESSORIES

071--1832--02

103--0434--00

131--7922--00

INSTRUCTIONS, TDSUSBF USB 2.0 TEST FIXTURE

CABLE,USB, SHORT 5”

ADAPTER

TDSUSBF Test Fixture

12 TDSUSBF USB 2.0 Compliance Test Fixture Instructions