HP usb3.0 cable connector schematic

Agilent Technologies

USB 3.0 Cable-Connector
Assembly Compliance Test

Test Solution Overview Using
the Agilent E5071C ENA

Option TDR

Last Update 2012/12/20 (TH)

Purpose

• This slide will show how to make measurements of USB 3.0 cable &
connector assemblies Compliance Tests by using the Agilent E5071C

ENA Option TDR.

2

Agilent Digital Standards Program

Our solutions are driven and supported by Agilent

experts involved in international standards committees:

• Joint Electronic Devices Engineering Council (JEDEC)

• PCI Special Interest Group (PCI-SIG®)

• Video Electronics Standards Association (VESA)

• Serial ATA International Organization (SATA-IO)

• USB-Implementers Forum (USB-IF)

• Mobile Industry Processor Interface (MIPI) Alliance

• Optical Internetworking Forum (OIF)

We’re active in standards meetings, workshops, plugfests,

and seminars

Our customers test with highest confidence and achieve

compliance faster

3

USB 3.0 – Agilent Total Solution Coverage

SW

HW

Signal

Condi­tioning

Fixture

DUT

Transmitter Test

N8805A USB3.0

Protocol decode &

triggering SW

DSOX90000A
Infiniium
real time scope

or

DSO91304A

Infiniium

real time scope

U7242A
USB 3.0
Test Fixture

U7243A USB

Compliance Test

Software

Tx

Interconnect

Test

Receiver Test

N5990A Automatic

SW for USB

compliance

Protocol

Test

(link/transaction

layers)

E5071C ENA

U4612A
Jammer

Option TDR

Bit-USB-

CBL-0001

from BitifEye

Cable

USB3ET
from
USB-IF

N4903B J-BERT
High-Perf
Serial BERT

with

De-emph
N4916A or
N4916B or
N4903B-002

U7242A
Test Fixture

Tx

Tx

Rx

Rx

U4611A/B
USB 3¥2¥1.1
Analyzer

Tx

Rx

Tx

Rx

USB Design and Test - A Better Way

(http://cp.literature.agilent.com/litweb/pdf/5990-4640EN.pdf)

4

Reference Document

• Universal Serial Bus 3.0 Specification

• Universal Serial Bus 3.0 Connectors and Cable Assemblies

Compliance Document

5

USB 3.0 Cable/Connector Compliance Test Solution

Cable Assembly

Host CabCon

2

SS USB Pair

Full Simplex

2

SS USB Pair

Full Simplex

2

USB 2.0 Pair

Half-Duplex

PWR (1), GND (1)

Device

SuperSpeeed USB Developers Conference Presentation, Taipei, Taiwan (April 1-2, 2010), “SuperSpeed USB Physical Layer”,
Howard Heck, Intel Corporation http://www.usb.org/developers/presentations/pres0410

6

USB 3.0 Cable/Connector Compliance Test Solution

Measurement Parameters

Host CabCon

2

SS USB Pair

Full Simplex

2

SS USB Pair

Full Simplex

2

USB 2.0 Pair

Half-Duplex

PWR (1), GND (1)

Device

Time Domain Measurements

Mated Connector Impedance

Raw Cable Impedance

Intra-Pair Skew
D+/D- Pair Skew (USB 2.0)
D+/D- Propagation Delay (USB 2.0)
Diferential Near End Crosstalk (NEXT)
Differential Crosstalk Between D+/D- and Super

Speed

Frequency Domain Measurements

Differential Insertion Loss (Sdd21)
Differential-to-common Mode Conversion

(Scd21)

D+/D- Pair Attenuation (USB 2.0)

7

USB 3.0 Cable/Connector Compliance Test Solution

Solution Overview

•USB 3.0 cable/connector compliance testing requires parametric measurements in

both time and frequency domains

Traditional

Frequency Domain

•Insertion Loss (Sdd21)

•Mode Conversion

(Scd21)

Time Domain

•Mated Connector
Impedance Profile (TDR)

•Crosstalk (NEXT, FEXT)
(TDT)

Solution

Vector

Network

Analyzer

(VNA)

TDR

Scope

New Solution

•ALL parameters can
be measured with

ENA Option TDR

One-box

Solution !!

8

USB 3.0 Cable/Connector Compliance Test Solution

Developers Conference (Taiwan, April 2010)

ENA Option TDR introduced
as recommended solution for
CabCon compliance test.

“SuperSpeed USB Compliance: Overview”,
Rahman Ismail, Intel Corporation

http://www.usb.org/developers/ssusb

9

USB 3.0 Cable/Connector Compliance Test Solution

Certification Test Centers Supporting ENA Option TDR

ENA option TDR is used by USB-IF certified test centers to perform USB

3.0 connectors and cable assemblies compliance tests

(In the process of certification)

10

(In the process of certification)

USB 3.0 Cable/Connector Compliance Test Solution

ENA Option TDR Solution

•ENA Mainframe

•E5071C-480: 4-port, 9kHz to 8.5GHz

•E5071C-485: 4-port, 100kHz to 8.5GHz

•E5071C-4D5: 4-port, 300kHz to 14GHz

•E5071C-4K5: 4-port, 300kHz 20GHz

•Enhanced Time Domain Analysis

Option (E5071C-TDR)

•ECal Module

•N4431B for E5071C-480/485

•N4433A for E5071C-4D5/4K5

•Method of Implementation (MOI)

document available for download on
Agilent.com

•State files (480,485,4D5, 4K5) and
cal kit definition file for official cal

fixtures are also available

SuperSpeed Cable Test
Fixtures

Fixtures for testing
SuperSpeed cable
assemblies and USB 3.0

connectors are available

for purchase through Allion
and BitifEye.

http://www.usb.org/developers
/ssusb/ssusbtools/

MOI

(Method of Implementation)

Step-by-step procedure on
how to measure the specified
parameters in the specification
document using ENA Option
TDR.

www.agilent.com/find/ena-tdr_compliance

www.agilent.com/find/ena-tdr_usb3-cabcon

11

USB 3.0 Cable/Connector Compliance Test Solution

Measurement Parameters by ENA Option TDR

Connector

Impedance

(Tdd11, Tdd22)

Intra-Pair

Skew

(T31, T42)

D+/D- Intra-Pair Skew

& Propagation Delay

(T31, T42)

Time Domain

Cable

Impedance

(Tdd11, Tdd22)

NEXT

D+/D- & SS

Crosstalk

(Tdd21)

Frequency Domain

Insertion Loss

(Sdd21)

Mode Conversion

(Scd21)

D+/D- Pair

Attenuation

(Sdd21)

12

USB 3.0 Cable/Connector Compliance Test Solution

Mated Connector Impedance

•Multiple reflections from impedance mismatches
cause noise at the receiver. Therefore, the impedance

profile provides an indication of multiple reflection

induced noise

•Impedance is the most used parameter, but is an

Host CabCon

2

SS USB Pair

Full Simplex

2

Device

Tdd11 Tdd22

SS USB Pair

Full Simplex

2

USB 2.0 Pair

Half-Duplex

PWR (1), GND (1)

indirect measure of the signal arriving at the receiver

TDR with 50 ps (20-80%) rise time

110

100

90

80

Impedance (ohm)

70

105 ohm

75 ohm

Time (s)

Impedance limits of a mated connector

13

USB 3.0 Cable/Connector Compliance Test Solution

Raw Cable Impedance

•Multiple reflections from impedance mismatches
cause noise at the receiver. Therefore, the impedance

profile provides an indication of multiple reflection

induced noise

•Impedance is the most used parameter, but is an

Host CabCon

2

SS USB Pair

Full Simplex

2

Device

Tdd11 Tdd22

SS USB Pair

Full Simplex

2

USB 2.0 Pair

Half-Duplex

PWR (1), GND (1)

indirect measure of the signal arriving at the receiver

TDR with 200 ps (10-90%) rise time

110

100

90

80

Impedance (ohm)

70

97 ohm

83 ohm

Time (s)

Impedance limits of a raw cable

14

USB 3.0 Cable/Connector Compliance Test Solution

Intra-Pair Skew

•Ensures the signal on both SS lines of a cable
assembly arrive at the receiver at the same time.

•If Delta Time < 15 psec/m: Pass, else: Fail

Host CabCon

2

SS USB Pair

Full Simplex

T31, T42

SS USB Pair

USB 2.0 Pair

PWR (1), GND (1)

2

Full Simplex

2

Half-Duplex

Device

15

USB 3.0 Cable/Connector Compliance Test Solution

D+/D- Pair Intra-Pair Skew

•Ensures the signal on both the D+ and D- lines of a
cable assembly arrive at the receiver at the same time.

•If Delta Time < 100 psec: Pass, else: Fail

Host CabCon

2

SS USB Pair

Full Simplex

2

SS USB Pair

Full Simplex

2

USB 2.0 Pair

T31, T42

Half-Duplex

PWR (1), GND (1)

Device

16

USB 3.0 Cable/Connector Compliance Test Solution

D+/D- Pair Propagation Delay

• Verifies the end-to-end propagation of the D+/D- lines
of the cable assembly

Host CabCon

2

SS USB Pair

Full Simplex

2

SS USB Pair

Full Simplex

2

USB 2.0 Pair

T31, T42

Half-Duplex

PWR (1), GND (1)

Device

10

17

USB 3.0 Cable/Connector Compliance Test Solution

Differential Near End Crosstalk Between SS Pairs (NEXT)

•Measure of coupling between the differential pairs

•Crosstalk can be expressed in time domain (%), or

frequency domain (dB)

@ rise time 50 ps (20-80%)

Host CabCon

2

SS USB Pair

NEXT

Full Simplex

2

SS USB Pair

Full Simplex

2

USB 2.0 Pair

Half-Duplex

PWR (1), GND (1)

Device

18

USB 3.0 Cable/Connector Compliance Test Solution

Differential Crosstalk Between D+/D- and SS Pairs (NEXT/FEXT)

•Measure of coupling between the differential pairs

•Crosstalk can be expressed in time domain (%), or

frequency domain (dB)

@ rise time 500 ps (10-90%)

Host CabCon

2

SS USB Pair

Full Simplex

2

NEXT

SS USB Pair

Full Simplex

2

USB 2.0 Pair

Half-Duplex

PWR (1), GND (1)

Device

FEXT

19

USB 3.0 Cable/Connector Compliance Test Solution

SS Differential Insertion Loss (Sdd21)

•Measure of frequency response that the differential
signal sees as it propagates through the interconnect

•direct measure of the signal arriving at the receiver

0

Host CabCon

2

SS USB Pair

Full Simplex

2

Sdd21

SS USB Pair

Full Simplex

2

USB 2.0 Pair

Half-Duplex

PWR (1), GND (1)

Device

-5

-10

-15

-20

(Sdd21, dB)

-25

Differential Insertion Loss

-30
1000

2000 3000

4000

5000

6000

7000

Frequency (MHz)

Differential Insertion Loss (Sdd21) Requirement

20

USB 3.0 Cable/Connector Compliance Test Solution

Differential to Common Mode Conversion (Scd21)

•Common-mode current is directly responsible for EMI
and Scd21 is a measure of EMI generation

•Main purpose of this requirement is to limit EMI

emission

-10

Host CabCon

2

SS USB Pair

Full Simplex

2

Differential

SS USB Pair

Full Simplex

Common

Mode

2

USB 2.0 Pair

Half-Duplex

PWR (1), GND (1)

Device

Mode

-12

-14

-16

-18

-20

-22

-24

-26

-28

Conversion (Scd21, dB)

Differential to Common mode

-30

1000

2000 3000

4000

5000

6000

7000

Frequency (MHz)

Differential-to-Common-Mode conversion (Scd21) Requirement

21

USB 3.0 Cable/Connector Compliance Test Solution

D+/D- Pair Attenuation

•Ensures the D+/D- pair of a cable assembly can
provides adequate signal strength to the receiver to

maintain a low error rate

0

Host CabCon

2

SS USB Pair

Full Simplex

2

SS USB Pair

Full Simplex

2

USB 2.0 Pair

Sdd21

Half-Duplex

PWR (1), GND (1)

Device

-1

-2

-3

-4

-5

-6

-7

-8

-9

Conversion (Scd21, dB)

Differential to Common mode

-10
100

200 300

400

500

600

700

Frequency (MHz)

D+/D- Pair Attenuation (Sdd21) Requirement

22

ENA Option TDR Compliance

One-box Solution for TDR/S-parameter Compliance Test

Certified MOIs

•Cable/Connector

Time

&

Frequency

Time

&

Frequency

Time

Frequency

Frequency

&

More Standards
Currently Under

Investigation

•Transmitter/Receiver (Hot TDR)

Test Centers Support ENA Option TDR

ENA Option TDR is used world wide by

certified test centers of USB, HDMI,

DisplayPort, and SATA

Time

&

Frequency

For more detail about compliance test solution by the ENA Option TDR, visit www.agilent.com/find/ena-tdr_compliance

23

Time

&

Frequency

USB 3.0 Cable Test Station

Agilent E5071C-TDR and ECal, BitifEye Switch, Software

24

Automated USB 3.0 Cable Test Details

Calibration and Test Procedures

• Test B-4-1: D+/D- Pair Attenuation

• Test B-4-2: D+/D- Propagation Dealy

• Test B-4-3: D+/D- Pair Prop. Delay Skew

• Test B-4-4: Differential Impedance

• Test B-4-5: Differential Insertion Loss

• Test B-4-6: Diff. To Common Mode Conversion

• Test B-4-7: Differential Near-End Crosstalk

• Test B-4-8: Near & Far-End Crosstalk

• Informative: Raw Cable Imp. & Intra-Pair Skew

25

USB 3.0 Cable/Connector Compliance Test Solution

Summary

ENA Option TDR Cable/Connector Compliance Testing Solution is ….

•One-box solution which provides complete characterization of high speed digital

interconnects (time domain, frequency domain, eye diagram)

•Similar look-and-feel to traditional TDR scopes, providing simple and intuitive

operation even for users unfamiliar to VNAs and S-parameters

•Adopted by test labs worldwide

26

27

Questions?

Agilent VNA Solutions

E5071C

World’s most popular
economy VNA

9 kHz to 4.5, 8.5 GHz

E5061B

NA + ZA in one-box

FieldFox

Handheld RF
Analyzer
5 Hz to 4/6 GHz

5 Hz to 3 GHz

Low cost RF VNA

100 k to 1.5/3.0 GHz

300 kHz to 20.0 GHz

E5072A

Best performance
ENA

30 kHz to 4.5, 8.5

GHz

ENA Series

PNA-X, NVNA

Industry-leading performance
10 M to 13.5/26.5/43.5/50/67 GHz

Banded mm-wave to 2 THz

PNA

Performance VNA
10 M to 20, 40, 50, 67, 110 GHz
Banded mm-wave to 2 THz

PNA-L

World’s most capable value VNA
300 kHz to 6, 13.5, 20 GHz
10 MHz to 40, 50 GHz

Mm-wave
solutions

Up to 2 THz

PNA-X
receiver

8530A replacement

PNA Series

28

What is ENA Option TDR?

The ENA Option TDR is an application software embedded on the
ENA, which provides an one-box solution for high speed serial
interconnect analysis.

Frequency Domain Time Domain

Eye Diagram

3 Breakthroughs

for Signal Integrity Design and Verification

Simple and Intuitive Operation

Fast and Accurate Measurements

ESD Robustness

ESD protection inside

29

What is ENA Option TDR?

[Video]

Agilent ENA Option TDR

Changing the world of Time Domain Reflectometry (TDR) Measurements

•www.youtube.com/watch?v=hwQNlyyJ5hI&list=UUAJAjd97CfnCehC4jZAfkxQ&index=20&feature=plcp

•www.agilent.com/find/ena-tdr

30

Additional Resources

•ENA Option TDR Reference Material

www.agilent.com/find/ena-tdr

•Technical Overview (5990-5237EN)

•Application Notes

•Correlation between TDR oscilloscope and VNA generated time domain waveform (5990-5238EN)

•Comparison of Measurement Performance between Vector Network Analyzer and TDR

Oscilloscope (5990-5446EN)

•Effective Hot TDR Measurements of Active Devices Using ENA Option TDR (5990-9676EN)

•Measurement Uncertainty of VNA Based TDR/TDT Measurement (5990-8406EN)

•Accuracy Verification of Agilent’s ENA Option TDR Time Domain Measurement using a NIST

Traceable Standard (5990-5728EN)

•Method of Implementation (MOI) for High Speed Digital Standards

www.agilent.com/find/ena-tdr_compliance

31

Measurement Correlation

TDR/TDT

•DUT: USB3.0 Cable

•50 ps rise time (20-80%)

32

Measurement Correlation

Eye Diagram

•DUT: USB3.0 Cable

•PRBS (2^7-1) @ 5 Gbps

ENA Option TDR

(simulated)

N4903B + 86100C

(live)

33