HP CR3678 schematic
USB 2.0 Cable-Connector Assembly
Compliance Tests
Test Solution Overview Using the
Keysight E5071C ENA Option TDR
Last Update 2014/09/24
Purpose
• This slide will show how to make measurements of USB 2.0 cable &
connector assemblies compliance tests by using the Keysight
E5071C ENA Option TDR.
USB 2.0 CabCon
Compliance Test
Page
2
Keysight Digital Standards Program
Our solutions are driven and supported by Keysight
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
USB 2.0 CabCon
Compliance Test
Page
3
USB 3.0 – Keysight Total Solution Coverage
SW
HW
Signal
Conditioning
Transmitter Test
N8805A USB3.0
Protocol decode &
triggering SW
DSOX90000A
Infiniium
real time scope
or
DSO91304A
Infiniium
real time scope
U7243A USB
Compliance Test
Software
Interconnect Test
E5071C ENA
Option TDR
E5071C Option TDR
ENA Network Analyzer
Receiver Test
N5990A Automatic
SW for USB
compliance
N4903B J-BERT
High-Performance
Serial BERT
with
De-emphasis
N4916A or
N4916B or
N4903B-002
Fixture
DUT
U7242A
USB 3.0
Test Fixture
Tx
Bit-USB-CBL-
0001
from BitifEye
Cable
USB Design and Test - A Better Way
(http://literature.cdn.keysight.com/litweb/pdf/5990-4640EN.pdf)
USB3ET
from USB-IF
USB 2.0 CabCon
Compliance Test
U7242A USB 3.0
Test Fixture
Tx
Tx
Rx
Rx
Page
4
Reference Document
• Universal Serial Bus Specification (Revision 2.0)
• Universal Serial Bus Cables and Connectors Class Document
(Revision 2.0)
USB 2.0 CabCon
Compliance Test
Page
5
USB 2.0 Cable/Connector Compliance Test
Cable Assembly
Host CabCon
2
USB 2.0
Half-Duplex
PWR (1), GND (1)
Three Data Rates:
Low Speed at 1.5 Mbps
Full Speed at 12 Mbps
High Speed at 480 Mbps
Device
Typical High-/Full-Speed Cable Construction
USB 2.0 CabCon
Compliance Test
Page
6
USB 2.0 Cable/Connector Compliance Test
Measurement Parameters
Host CabCon
2
USB 2.0
Half-Duplex
PWR (1), GND (1)
Device
Time Domain Measurements
Cable Impedance (High/Full-Speed)
Propagation Delay
Propagation Delay Skew
Frequency Domain Measurements
Signal Pair Attenuation (High/Full-Speed)
USB 2.0 CabCon
Compliance Test
Page
7
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