LeCroy Advisor, Руководство пользователя

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Chapter 1: Overview USB Advisor User Manual
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LeCroy Corporation
Physical Components
• High impedance tap inserts non-intrusively in any branch of a USB system
• 128 MB of physical data recording memory
• Two recording channels - one for High-Speed traffic and one for Classic-Speeds
traffic (either Low- or Full-Speed)
• Secondary recording channel aids in the development of multiple speed functions
up-stream and down-stream of a speed-matching hub or transaction translator
• Convenient "Detach Device" switch operates with the Classic recording channel to
save time and reduce USB cable/connector wear for multiple connects and discon-
nects to host
• Full-speed USB connection to desktop or portable host PC
• Internal wide-range AC power supply
• Break-out board (included)
Recording Options
• Triggering of new USB2.0 PIDS and split transaction special tokens (i.e. ERR,
SPLIT, PING, NYET, DATA2, MDATA)
• CATC Trace displays and enumerates new USB2.0 Micro Frames
• Three forms of triggering: Snapshot, Manual and Event
• Automatically detects and captures high-, full-, and low-speed traffic
• Adjustable buffer size from 0.1MB to 128MB
• Versatile triggering-bit-wise value and mask data patterns up to sixteen bytes wide
for Setup transactions and data packets
• Triggering on multiple error conditions - PID bad, bit stuffing bad, CRC bad,
end-of-packet bad, babble, loss of activity, frame length violation, time-out or
turn-around violation, data toggle violation
• A new transaction sequencer allows triggering or filtering on a token qualified by a
data pattern and/or specific handshake, or alternately transactions can be filtered
• Advanced triggering with event counting and sequencing
• Dedicated trigger for recording input and output that is used to interface to external
test equipment
• Real-time traffic capture filtering and data packet truncation variable up to 245 bytes