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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:
The 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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