Version 2.0.3
February 13, 2006
Chapter 2:
Frequently Asked Questions
General
Which recording speeds can be supported?
The USB Explorer 200 supports recording of low speed (1.5 Mbit/s), full speed (12
Mbit/s) and high speed (480 Mbit/s) links. It can record traffic from any USB 2.0
device. Owing to its powerful decoding engine, the USB Explorer 200 automatically
detects the appropriate recording speed for an unequalled ease of use.
Which type of configuration do I need to apply to a USB Explorer?
The analyzer records the data to be analyzed in real time using a USB 2.0
connection. For this reason, two host controllers are necessary: the first to connect
the peripheral to be tested and the other to record the data. You must therefore
have either:
•
Two computers, one for analysis and the other for testing
•
One computer with two host controllers. This is the case when an USB 2.0
extension card is used.
To obtain the best performance, we highly recommend the use of two computers.
The analyzer records data using a USB 2.0 connection. Do I need a USB 2.0
host controller?
No. The analyzer works just as well with a High speed connection (480 Mbit/s) as
with a Full speed one (12 Mbit/s). But you must be aware that a full speed
connection may not be sufficient if the flow of data is too large.
What is the maximum quantity of data that I can record?
The analyzer uses the host-computer memory to store its information. The
maximum quantity of data is therefore limited by the size of the central memory
(RAM).
Hardware
Is it possible to upgrade the analyzer firmware?
Yes, the hardware of the analyzer is upgradeable. The electronic components are
updated with each new software release. No user intervention is therefore required.
Which packets light up the Activity indicator?
DATA packets light up the Activity indicator for around ten milliseconds. In a busy
bus case, this indicator blinks rapidly.
USB Explorer 200
User's manual
Page 10 of 17
