Tektronix TDSUSBF User manual

TDSUSBF
USB 2.0 Compliance Test Fixture
ZZZ
Instructions
xx
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
*P071183202*
071-1832-03

Copyright © Tektronix. 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
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
A
B Receptacle
A Receptacle
B
A
J2
J1
J5
J81
J71
J70
J7
J12
J16
J19
J28
J34
J92
J37
J32
J26
J14
J20
J10
J72
J61
J150
J3
J4
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
A receptacle on the back of the board
A receptacle on the back of the board
Init LED
Switches Connectors Loads
S1
S2
S81
S71
1
3
5
7J71
J81
J2
J1
Switches Connectors Loads
S4 2
J4
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
1
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
3
3
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
174-5634-00
131--7922--00
1
1
1
INSTRUCTIONS, TDSUSBF USB 2.0 TEST FIXTURE
CABLE,USB, SHORT 5”
ADAPTER

TDSUSBF Test Fixture
12 TDSUSBF USB 2.0 Compliance Test Fixture Instructions