Tektronix TDSUSBF Service manual

Instructions

TDSUSBF
USB 2.0 Compliance Test Fixture

071-1063-02

This document applies to firmware version X.XX
and above.

Warning

The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to
performing service.

www.tektronix.com

*P071106302*

071106302

Copyright © Tektronix, Inc. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or
suppliers, and are protected by national copyright laws and international treaty provisions.

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

H In North America, call 1-800-833-9200.
H Worldwide, visit www.tektronix.com to find contacts in your area.

Warranty 5

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.

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.

To Avoid Fire or
Personal Injury

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.

TDSSUBF USB 2.0 Test Fixture Instructions

i

General Safety Summary

Symbols and Terms

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

ii

TDSSUBF USB 2.0 Test Fixture Instructions

Environmental Considerations

This section provides information about the environmental impact of the
product.

Product End−of−Life

Handling

Restriction of Hazardous

Substances

Observe the following guidelines when recycling an instrument or component:

Equipment Recycling. Production of this equipment required the extraction and
use of natural resources. The equipment may contain substances that could be
harmful to the environment or human health if improperly handled at the
product’s end of life. In order to avoid release of such substances into the
environment and to reduce the use of natural resources, we encourage you to
recycle this product in an appropriate system that will ensure that most of the
materials are reused or recycled appropriately.

The symbol shown to the left indicates that this product
complies with the European Union’s requirements
according to Directive 2002/96/EC on waste electrical and
electronic equipment (WEEE). For information about
recycling options, check the Support/Service section of the
Tektronix Web site (www.tektronix.com).

This product has been classified as Monitoring and Control equipment, and is
outside the scope of the 2002/95/EC RoHS Directive. This product is known to
contain lead, cadmium, mercury, and hexavalent chromium.

TDSSUBF USB 2.0 Test Fixture Instructions

iii

Environmental Considerations

iv

TDSSUBF USB 2.0 Test Fixture Instructions

TDSUSBF Test Fixture

The TDSUSBF is a test fixture used to take measurements of the USB 2.0
interface bus. Tests include signal quality, inrush, droop, receiver sensitivity, and
impedance measurement, all mandatory for USB 2.0 compliance. The fixture can
be used with user-written software or with Tektronix-supplied software
(TDSUSBS).

Accessories

The following accessories are included with the fixture. Refer to the Replaceable
Parts List on page 9 for part numbers when ordering replacement parts.

H Instructions
H Adapter—adapts an A male plug to a B male plug
H Power supply
H Power cord—North American, 250 V Standard - Options available:

H Option A1—Universal European 250 V, 50 Hz
H Option A2—United Kingdom 240 V, 50 Hz
H Option A3—Australian 250 V, 50 Hz
H Option A5—Switzerland 250 V, 50 Hz
H Option AC—China 250 V, 50 Hz
H Option 99—No power cord

H Short USB cable

TDSSUBF USB 2.0 Test Fixture Instructions

1

TDSUSBF Test Fixture

Test Equipment

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

H TDS8000 Oscilloscope with an 80E04 TDR sampling module
H P6248 1.7 GHz Differential Probe
H P6245 1.5 GHz 10X Probe (3)
H TCP202 Current Probe
H DG2040 Data Generator or AWG610 Arbitrary Waveform Generator
H High quality SMA cables and attenuators

2

TDSSUBF USB 2.0 Test Fixture Instructions

Installation

TDSUSBF Test Fixture

To use the test fixture, refer to Figure 1 on page 5, 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. Connect the power supply cable to the DC Power In jack located at the top

of the board.

3. Connect the line cord to the power supply and to an appropriate line source.

4. Check that the power-on LED lights. If it does not, remove the power supply

cable from the DC Power In jack, and check for shorts.

5. Put switch S6 in the INIT position. The INIT status LED lights.

6. Connect the board for specific tests as described in Table 1 on page 6.

7. Set the DUT (Device Under Test) to the proper test state. (See note.)

NOTE. 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.

8. Put switch S6 in the TEST position. The TEST status LED lights.

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

10. When you are finished testing, put switch S6 in the INIT position and

disconnect the power supply cable from the DC Power In jack.

TDSSUBF USB 2.0 Test Fixture Instructions

3

TDSUSBF Test Fixture

Connections and Switch Settings

Use Figure 1 on page 5 and Table 1 on page 6 to prepare the fixture for
specific tests.

For most tests, the following oscilloscope configuration is recommended:

CH 1—Single ended probe connected to D+
CH 2—Single ended probe connected to D­CH 3—Adjacent channel trigger source

Switch S6 (Init/Test)

The initialize and test switch (S6) is a two-position switch used to initialize and
test the following:

H Device high speed TDR
H Device high speed receiver sensitivity
H Device high speed signal quality

NOTE. The device high-speed signal quality section of the test fixture is also
used for downstream low-speed/full-speed signal quality testing. When testing
downstream low -speed/full-speed signal quality, S6 remains in the INIT
position.

In the initialize position, the signal is routed through the fixture, from the input
to the output connectors. In the test position, the signal is passed from the DUT
to the SMA connectors on the fixture, to be connected to test equipment, such as
a TDR.

4

TDSSUBF USB 2.0 Test Fixture Instructions

TDSUSBF Test Fixture

Key

Test name/connector

Switch function

A Dongle connector

BAB Dongle connector

A

A Receptacle

B

B Receptacle

J1− J5 are B receptacles
on the back of the board

A

A

J7

J16

Droop Test Load

Power on LED

DC power in jack

J5

J1

J2

J4

J3

A

J11

J20

Switches S1 − S4 set the load

current on LOAD #1 − LOAD #4

Inrush Current, LS/FS

Signal Quality Upstream

Current probe
test loop

A

Switch S5 sets the Inrush

Current test state

Host TDR

A

A receptacle on the

back of the board

A receptacle on the

back of the board

A receptacle on the

back of the board

A receptacle on the

back of the board

Status LEDs

J12

J39

A

J15

J41

B

J22

J28

J34

J26

B

J32

B

J37

Figure 1: Fixture connections and switch functions

Adjacent Trigger & Droop,

LS/FS Signal Quality Upstream

A

Device TDR

High Speed

Receiver Sensitivity

Signal Quality − HS Upstream,

LS,FS Downstream

S6 − Init/Test switch

Switch S8 − Low/High for

Disconnect Detect test

Disconnect Detect

Switch S7 − Init/Test for

Disconnect Detect test

TDSSUBF USB 2.0 Test Fixture Instructions

5

TDSUSBF Test Fixture

Signal Connections

Use Table 1 and Figure 1 on page 5 to prepare the fixture for specific tests.

Table 1: USB signal connections and switch settings

1

Test

Host TDR

2

Device TDR

Host

connector number/type

J20 / A Dongle N/A N/A

2

J26 / B receptacle J22 / A receptacle S6 switch to INIT, and then TEST

J16 / A Dongle N/A N/A

Signal Quality

Upstream (Host)

HS Signal

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

Quality Upstream

LS, FS Signal

J11, J15 / A receptacle J7, J12 / A Dongle S5 switch to On

Quality Upstream

LS, FS Signal

J37 / B receptacle J34 / A receptacle S6 switch to INIT, and then TEST
Quality Down−
stream

HS Receiver
Sensitivity

2

Disconnect

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

J41 / A Dongle J39 / A receptacle S7 switch in INIT position, and then TEST
Detection

Adjacent Trigger

J12 / A Dongle J15 / A receptacle
and Droop

Inrush Current J11/ A receptacle J7 / A Dongle S5 to Off, then Discharge, and then On

1

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

2

See Table 2 for SMA connections

3

Connected to a load using a USB cable

Downstream (DUT)
connector number/type

3

Switch Number and Setting

S8 switch in High position, and then Low

N/A

SMA Connections

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

Table 2 lists the details of where the SMA connectors are used. See Figure 1 on
page 5 for connector locations.

Table 2: SMA connections

Test Connector number and connection Connector number and connection

High Speed Receiver Sensitivity J31 (D+) to DG2040, Ch 0 J30 (D− ) to DG2040, Ch 1

High Speed Device TDR J24 to TDR Sampling Module, Ch 1 J25 to TDR Sampling Module, Ch 2

High Speed Host TDR J19 to TDR Sampling Module, Ch 1 J18 to TDR Sampling Module, Ch 2

6

TDSSUBF USB 2.0 Test Fixture Instructions

TDSUSBF Test Fixture

Load Connections

Two types of loads (passive and active) are provided on the fixture for you to
include in different tests and configurations. Four separate passive loads, #1 to
#4, are switchable from 100 mA, off, 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 via B-style receptacles that are mounted on the back side of the
test fixture.

NOTE. Switch numbers do not follow load numbers. For example, Switch 4
controls Load #2. See Table 3 for the correct switch/load combinations.

Use Table 3 and Figure 1 on page 5 to configure loads for specific tests.

Table 3: Load connections and switch settings

Load number Connector number/type Switch number Switch positions

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

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

#3 J2 / B receptacle S3 100mA / off / 500mA

#4 J3 / B receptacle S2 100mA / off / 500mA

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

TDSSUBF USB 2.0 Test Fixture Instructions

7

TDSUSBF Test Fixture

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 4: Specifications

Specification Description

Input voltage rating +5.0VDC, ±0.25V

Power Consumption, Typical 1 W

Fuse Rating 0.5A, 60V, Polyswitch resettable fuse

Operating Temperature +15 °C to +35 °C (59 °F to 95 °F)

Table 5: Certifications and compliances

Category Standards or description

EC Declaration of Conformity −
EMC

Australia/New Zealand
Declaration of Conformity −
EMC

FCC Compliance Emissions comply with FCC Code of Federal Regulations 47, Part 15, Subpart B, Class A Limits.

1

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

Meets intent of Directive 89/336/EEC for Electromagnetic Compatibility. Compliance was
demonstrated to the following specifications as listed in the Official Journal of the European
Communities:

EN 61326 EMC requirements for Class A electrical equipment for

measurement, control and laboratory use.

IEC 61000− 4− 2 Electrostatic discharge immunity (Performance criterion D)
IEC 61000−4− 3 RF electromagnetic field immunity (Performance criterion A)
IEC 61000−4 − 4 Electrical fast transient / burst immunity (Performance criterion B)
IEC 61000−4 − 5 Power line surge immunity (Performance criterion B)
IEC 61000−4 − 6 Conducted RF immunity (Performance criterion A)
IEC 61000−4 − 11 Voltage dips and interruptions immunity (Performance criterion B)

EN 61000−3 − 2 AC power line harmonic emissions

Complies with EMC provision of Radiocommunications Act per the following standard(s):

AS/NZS 2064.1/2 Industrial, Scientific, and Medical Equipment: 1992

1

8

TDSSUBF USB 2.0 Test Fixture Instructions

Replaceable Parts List

Replaceable Parts

TDSUSBF Test Fixture

This section contains a list of the replaceable parts for the fixture. Use this list to
identify and order replacement parts.

Tektronix part

Part ID

A dongle 174− 4662−00 5 CABLE ASSY,SP:USB,TYPE A CONN TO STRIPPED END 174 − 4662−00

Short
USB
cable

A recep−
tacle

B recep−
tacle

S1− 5 260−2767− 00 5 SWITCH,TOGGLE:SPDT,ON−OFF−ON,MEDIUM

S6 260− 2769− 00 1 SWITCH,TOGGLE:SPDT,3A AT 28VDC,ON−NONE−ON,STD

S7, 8 260 − 2766−00 2 SWITCH,TOGGLE:DPDT,ON− NONE− ON,MEDIUM

F1 159− 0412−00 1 FUSE,THRM,CHIP:SELF RESETTING FUSE,0.5A HOLD,1.0A

LEDs 150− 1059−00 3 DIODE,OPTO:LED,RED,626NM,20MCD AT 10MA,35 DEG

K1− 3 148− 0270−00 3 RELAY, ARMATURE:2FORMC, LATCH, RF 50 OHM,INS LSS

Power
supply

Power
cord

Adapter 103−0434−00 1 ADAPTER, USB A FEMALE TO USB B FEMALE 103−0434−00

Manual

Mini−B
Adapter

number

174− 5197−00 1 CABLE ASSY,5 INCH USB 2.0 I/O CABLE 174 − 5197−00

131− 6277 − 00 6 CONN,RIBBON:PCB,USB, SERIES A,FEMALE,RTANG,

131− 7307 − 00 8 CONN:PCB,USB,SERIES B,FEMALE,RTANG,

119− 5883−00 1 POWER SUPPLY:EXTERNAL,DESKTOP,7.5W,100 − 250VAC

161− 0104− 00 1 CABLE ASSY:3,18 AWG, 98 L, 250V/10A, IEC320, NEMA

161− 0104− 06 1 CA ASSY,PWR:3,1.0MM SQ,250V/10A,2.5

161− 0104−07 1 CA ASSY,PWR:3,1.0MM SQ,240V/10A,2.5 METER,

161− 0104− 05 1 CA ASSY,PWR:3,1.0MM SQ,250V/10A,2.5

161− 0167− 00 1 CA ASSY,PWR:3,0.75MM SQ,250V/10A,2.5

161− 0306− 00 1 CA ASSY,PWR:3,1.0MM SQ,250V/10A,2.5

071− 1063− 02

131− 7922− 00

Serial no.
effective

Serial no.
discont’d

Qty Name & description

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

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

ACTUATOR,THREADED BUSHING,PC MOUNT
THRU − HOLE,SILVER CONTACT

0.370" HIGH ACTUATOR,THREADED BUSHING,PCB TERMIN

ACTUATOR,THREADED BUSHING,PC MOUNT
THRU − HOLE,SILVER CONTA

TRIP,60V MAX,SMD050,T&R,

VIEW ANGLE,HLMP−3316,T−1 3/4

0.2DB@1GHZ, 28V, 0.25A, COIL 5VDC, 61OHM, .30H

(−10%, +6%) 47− 63HZ IN,5VDC 1.5A OUT,REG OUT,6

15− 5P, WITH CORD GRIP, US

METER,RTANG,IEC320,RCPT,EUROPEAN

RTANG,IEC320,RCPT X 13A,FUSED,UK PLUG,(13A FUSE),U

METER,RTANG,IEC320,RCPT,AUSTRALIA

METER,RTANG,IEC320,RCPT,SWISS,NO CORD GRIP

METER,RTANG,IEC320,RCPT,CHINA

11MANUAL,TECH:USER,TDSUSBF

CONTACT, ELEC; DO− 4 & DO−5 THD END CU BE GLD PL

Mfr.
code

00779 787616− 2

TK0EM 67068−0000

09353 T103SHCQE

09353 T101SHCQE

09353 T201SHCQE

06090 SMD050− 2

50434 HLMP− 3316

11532 RF170− 5

14310 PW10DEA0503F01

S3109 ORDER BY

TK1373 ORDER BY

TK2541 ORDER BY

TK1373 161− 0104− 05

S3109 ORDER BY

TK6253 92− 2637− 250BKH

TK2548

80009

Mfr. part number

DESCRIPTION

DESCRIPTION

DESCRIPTION

DESCRIPTION

071− 1063− 02

131− 7922− 00

TDSSUBF USB 2.0 Test Fixture Instructions

9