USB Protocol Analysers
New Products
Explorer 280 - USB 3 range of
Analysers and Test Message Generators
DEX - USB 2 compliance test suite
To receive literature
on this top of the range protocol test system
fill in this request
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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 - Full USB 2
analysis at
up to 480Mbits/sec without breaking the bank
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Explorer 260 - Complete
package for USB 2 Analysis and Signal Generation
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DEX - USB 2 compliance test suite
To receive literature
on our range of cable USB analysers
fill in this request
|
Explorer 300 -
Analyses the latest Wireless USB and UWB standards over air
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Learn about USB with the Demo or visit our
USB Tutorial
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CMX USB device and
host stacks simplify development of your embedded application
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I like this little piece of hardware!
Got my problem solved in a few hours after spending weeks of trying to find
it without
- J.T. - The Netherlands
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..................
200 Basic
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Low speed (1.5 Mbit/s), full speed (12 Mbit/s)
High speed (480Mbits/sec) and
mixed capture
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Automatic detection of the speed of the Link Under Test
- An External trigger is included
- A 32Mbyte FIFO memory and a fast clock support the USB 2 maximum data rate
under most circumstances
- Split transactions are supported
- Non-intrusive analysis of bus data and states
- It is USB bus-powered
- It has a small form factor 150 * 120 mm, weight 750 grams
- The USB Data Visualiser is the user interface for the Explorer. This user interface minimises clutter but allows detail down to the bit level to
be displayed when required.
- The system hardware is upgradeable to the Explorer 200 Std or Pro
200 Standard
As for the Basic plus these additional features.....
- Real time statistical display and traffic analysis identifying
individual devices during capture
-
Support for On-The-Go Host and Session protocols ( On-The-Go is
the standard that defines how USB devices may communicate in the absence of a
controlling PC )
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Hub class decodes
200 Pro
As for the Standard plus these additional features.....
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....
- 1Gbyte FIFO for long high speed data capture problems
- Support via an optional probe for Interchip at all voltages
The 260 Protocol Generator uses the same hardware with a different
Firmware load to create USB traffic in order to...
- Emulate either a USB Host or Device
- Inject Error messages
- Generate sequences of messages with exact delays
- Triggering on events/external stimuli can be used within the message
sequences
- Using a scripting language complex test scenarios can be created
- It can import traffic from an Analyser for exact reproduction of
fault situations
- An optional Compliance Test Suite will test devices against Chapter
9 of the spec as well as against the HID, Hub and Mass storage class
specifications
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
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 :-
-
Filter or color code transactions by a number of
criteria - device, endpoint etc.
- The screen shot below shows enumerations of two peripherals taking place at the same time. A
hub is shown in blue and a mouse in red
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Details of the type of transactions and transfers are shown in a second window
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Decoded and detailed display of standard requests and descriptors are
given
-
The Display references the USB Specification
click on picture for large image
- Data may be displayed in a number of different formats
- Detection of USB bus states and low level protocols such as
power, IDLE, SE0, SOF and NAK
- Hub class requests are fully decoded with text descriptions of the
data.
- Each transaction is timed with 21nsec resolution
- Data collected to disk and reviewed with extensive filter and search options
- Once data has been collected it can be filtered and saved
as a file which can then be viewed by other engineers using the USB Data Visualiser
software which may be feely distributed.
- Test sessions can be shared with other engineers using the
demo as a file viewer.
- Text and XTML output formats allow the data be shared with other
programs or for
creating C header files.
- It runs under Windows 2000 or XP.
See below to get your copy including example bus
transactions
USB Class Interpreter
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.
Real Time Trigger
Available as a firmware upgrade for the Explorer 200 (and
included in the Explorer 200 Pro and 260) the hardware
triggering can detect numerous conditions occurring on the USB bus,
electrical conditions, errors conditions, different types of USB
packets and their source/destination/data as well as external
triggering conditions. Powerful and flexible event counters are
available. They can act on external or bus events as well as event
sequences and the counters can be reset by an event occurrence.
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Learn USB with the Ellisys USB Data Visualiser
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.
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