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USBEX200是瑞士Ellisys公司(www.ellisys.com)推出的USB2.0高速协议分析仪,支持USB低速(1.5MB/s)/全速(12MB/s)/高速(480MB/s)设备。可以让你看到USB总线的状态,USB总线上每个包的传输,描述符解码,侦测错误,显示USB事务和传输的层次并可显示这些事务和传输的地址等。简单易用且极具性价比,是电脑主机,USB设备,嵌入式系统和驱动开发的得力工具。
USBEX200简介
USB协议的应用已越来越广泛,现在的电脑主机和计算机外设均带有USB接口,如打印机/数码相机/移动存储设备/其他需要与计算机通讯的设备等。USB已成为事实上的电脑主机和计算机外设通讯的接口标准。
基于此,一台USB协议分析仪对研发人员来说就显得十分重要,因为我们得知道当计算机外设从连上电脑主机那一刻起到与主机开始正常通讯这个过程中究竟发生了些什么事。
鉴于USB协议分析仪的高精密性及高技术性,目前全世界范围内能够提供商用USB协议分析仪的厂家仅有几家,且均需从国外进口。
USBEX200是瑞士Ellisys公司(www.ellisys.com)推出的USB2.0高速协议分析仪,支持USB低速(1.5MB/s)/全速(12MB/s)/高速(480MB/s)设备。可以让你看到USB总线的状态,USB总线上每个包的传输,描述符解码,侦测错误,显示USB事务和传输的层次并可显示这些事务和传输的地址等。简单易用且极具性价比,是电脑主机,USB设备,嵌入式系统和驱动开发的得力工具。
外观尺寸:宽--150mm, 长--120mm, 高--65mm
重量:850克
保修期:两年有限保修,自然灾害/火灾等不可抗因素或人为损坏均不在包修之列。
工作原理:见图(1),图(2)
图(1)中Test computer代表USB主机,Device Under Test表示需要测试的外设,Analysis computer上装有USBEX200软件,按下图所示连接并运行USBEX200软件即可。
当需要测试的
外设超过一个时,可以通过加入一个USB Hub的方式来连接不同的外设,具体如图(2)所示:
USB Explorer200 是一个非侵入式的高速USB2.0protocol 分析器,能允许使用者显示bus 状态与被传送的封包,译码描述元(descriptors) ,侦测装置或驱动程序的错误与不兼容之处,并且可量测它们的执行效能,使用上非常容易上手,它是一套针对发展USB 装置、Hosts 、嵌入式软件或驱动程序的绝佳伙伴。
产品特点:
-兼容于所有USB2.0 的三种速度。-于测试速度下自动发现链接。-USBbus 状态与低阶protocols 的量测。-支持每个研发人员均可拥有一部的可负担价格。-非侵入式分析。-小型但强健的封装,电源由USB 供给。-绝佳的Off-Site 介入。-以高速USB2.0 连接实时地下载分析的数据。-可加附式(Scalable) 设计的硬件。-可显示Transactions 与传输的层级(Transfers Layers) 。-需求及描述元(Descriptor) 之高阶解碼。-功能强大的显示过滤器。-可以多种形式(XML 、text 、raw 等等)输出分析过的数据。-有条理的明细表显示。-有软件开发套件可利用。-免费的Viewer 软件。
USB2.0协议分析仪标准版与专业版的区别
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USB Explorer 200
标准版
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USB Explorer 200
专业版
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USB 1.1
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USB 2.0
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USB OTG
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Automatic speed discovery
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Low speed (1.5 Mbit/s)
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Full speed (12 Mbit/s)
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High speed (480 Mbit/s)
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Packets
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Reset
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Suspend
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Keep alive
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High speed handshake
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Timestamp precision
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16.66 ns
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16.66 ns
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Real-time recording
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OTG Descriptor
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OTG Requests
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Global view
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Detailed view
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Packets layer
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Transactions layer
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Transfers layer
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Rarely used fields hidden by default
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Decoded textual values
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Decimal values
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Hexadecimal values
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Binary values
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Consecutive SOFs grouping
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Consecutive NAKs grouping
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Descriptors decoding
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Standard requests decoding
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Detection of errors in descriptors
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Start of Frames filter
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NAK transactions filter
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Split transactions filter
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Bus states filter
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Instant filters
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Transactions
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Split transactions
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Data with mask
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Requests with mask
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Strings
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Errors
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Text format
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XML format
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Binary format
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Traffic
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Endpoints data
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Requests
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Descriptors
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Hub
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Mass Storage
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Wire Adapter
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Audio
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Human Interface Device
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Bluetooth HCI
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Still Image
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Communication
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DFU
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Diagnostic Device
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Wireless Controller
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Smart Card
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Video
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Vendor Specific
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WUSB Wire Adapter
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Test & Measurement
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C++ version
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External IN or OUT
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Frame Packets
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Splits Packets
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Tokens Packets
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Data Packets
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Data Pattern
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Handshake Packets
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Bus Conditions
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Trigger Conditions
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Error Conditions
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Events Counting
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Events Sequencing
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Non intrusive analysis
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Memory
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32 MBytes FIFO
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32 MBytes FIFO
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External trigger
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Upgradable hardware
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Powered by the USB bus
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Warranty
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2 years
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2 years
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High speed (480 Mbit/s)
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Full speed (12 Mbit/s)
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Width
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150 mm
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150 mm
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Length
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120 mm
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120 mm
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Height
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65 mm
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65 mm
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Weight
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750 g
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750 g
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USB Explorer 200 is a non-intrusive high speed USB 2.0 protocol analyzer that allow you to display the bus states, the packets sent and decode the descriptors of the USB protocol. It can detect errors in devices, host controllers, embedded softwares or drivers and can measure their performances. Very simple to use, it is the ideal companion for anyone developing USB devices, hosts, embedded software or drivers.
Highlights
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Compatible with all three USB 2.0 speeds
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Automatic discovery of the Link Under Test speed
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Measurement of USB bus states and low level protocols
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Affordable price allowing to supply each developer with one unit
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Non intrusive analysis
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Small and robust enclosure, powered by the USB bus
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Perfect for off-site interventions
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Download of the analyzed data in real time with a high speed USB 2.0 connection
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Scalable design of the hardware
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Display of transactions and transfers layers
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High level decoding of requests and descriptors
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Powerful display filters
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Exportation of analyzed data to several formats (XML, text, raw, etc.)
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Didactic display with reference to the specification
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Software development kit available
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Free viewer software
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Applications
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Enumeration issues validation
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USB device and host development
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Performances analysis
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USB drivers and software stacks debugging
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Quick learning of USB protocol
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Test-bench automation
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