|Computer Solutions Ltd|
USB Protocol Analysers
Our range of USB Analysers and Signal Generators provide the most cost effective way to investigate what is happening on your USB bus.
If you are developing target hardware with USB interfaces, developing the USB stack on the targets, developing the total application with code on the PC and the target or even on two targets using On-The-Go then what you need to be able to see is the transactions and packets that are transmitted over the bus. But USB is a complex beast and its not possible to do this by just putting a scope or logic analyser on the signal lines - what you need is an analyser that understand the details of the protocol and can present the data to you in an immediately understandable way. The Ellisys products do this and at such an amazingly low price that you can afford to give each engineer his own.
Explorer 200 Series family of High speed USB 2 protocol Analysers
The Ellisys Explorer 200 analysers require connection to an analysis PC via a USB2 connection and that analysis PC runs the user interface software as well as storing and displaying the USB transactions being measured. The analyser is powered from the analysis USB link.
The Explorer unit then intercepts a USB link under test without interfering with the signal.
The analysis PC then runs the USB Data Visualiser is a common user interface for the Explorer. This user interface minimises clutter but allows detail down to the bit level to be displayed when required.
The Explorer provides USB bus analysis at a budget price. Its user interface minimises clutter but allows detail down to the bit level to be displayed when required.
Able to monitor the fastest USB 2 signals at 480Mbits/sec the Explorer 200s are available as..................
As for the Basic plus these additional features.....
As for the Standard plus these additional features.....
Explorer 260 High speed USB 2 Protocol Analyser
Able to monitor the fastest USB 2 signals at 480Mbits/sec the Explorer 260 provide all the features of the 200 Pro but in addition....
Explorer 260 High speed USB 2 Protocol Generator
The 260 Protocol Generator uses the same hardware with a different Firmware load to create USB traffic in order to...
Explorer DEX Compliance Test Suite
The Ellisys USB Device Examiner (DEX) is a stand-alone USB device compliance test application that operates on the USB Explorer 260 hardware. DEX is provided with the Generator, or can be added as an option to the Analyzer. DEX provides a comprehensive set of robust compliance tests covering Chapter 9 of the USB Specification (Device Framework). Test results are pass/fail, annotated with descriptive detail, and are summarised in a convenient HTML-formatted summary report upon completion of testing. Each test can optionally be captured with an EX260 Analyzer, providing quick and in-depth analysis of test results. The summary report includes instant links to analyzer captures for each test. In addition to the Chapter 9 coverage for any USB device, DEX also provides class-specific testing of several device classes, including mass storage devices, HID devices, and hub class (Chapter 11). The mass storage device class test suite includes read and write bandwidth stress tests.
USB Data Visualiser
The USB Data Visualiser is the user interface for the Explorer device. To use one of the the analysers the operator starts the data collection process and then when enough data has been collected the operator stops collection. During collection the operator sees a count of the number of transactions, data volume and the average bus load. The Pro and 260 versions also include more detailed device specific Traffic analysis. At any time during collection the user can insert comments so that when the data is reviewed it is easy to identify what operations/actions were taking place. Once the data has been collected it may be displayed and saved for later viewing. The Data Visualiser may be feely distributed to other interested parties so that engineers can view the files saved without needing to be connected to an analyser.
When examining data collected the Visualiser provides may useful features. The user can :-
Higher level protocols have been defined for a number of common classes of device and by conforming to these protocols a product can operate within Windows using standard drivers.
The USB Class Interpreter included in the Explorer 200 Pro and 260 will recognise class based transactions and will decode and display all the standard fields within the messages associated with these standard Classes. This greatly simplifies the understanding of what is going on as, when required, it hides the detail of the individual USB transactions (see individual classes for details and examples).
Users can even create a DLL that will define their own custom protocols
Once data has been collected by an analyser with the Class Interpreter option enabled it may be displayed by any USB Data Visualiser so those just examining data do not need to purchase a separate license.
The Data Visualiser software can run without a unit present to allow users to share and review displays of captured data. The software package on installation also includes a number of files with captures of interactions between a PC and standard devices. It therefore makes an ideal teaching tool to show and help comprehend the details of the USB and Class protocols.
The software runs on W2000, XP and Vista.