User Manual Part 2
Table Of Contents
- 7. Recording Options
- 8. Display Options
- 9. Reading a CATC Trace
- 10. Decoding Higher Protocols
- 10.1 Introduction
- 10.2 LMP and L2CAP Messages
- 10.3 Decoding and Viewing Higher Protocol Data
- 10.4 Tooltips
- 10.5 Viewing Packets in LMP and L2CAP Messages
- 10.6 Types of LMP and L2CAP Messages
- 10.7 Viewing L2CAP Channel Connections
- 10.8 Viewing Protocol Messages and Transactions
- 10.9 Changing Protocol Assignments
- 11. Other Features
- 12. How to Contact CATC
- 13. Warranty and License
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Merlin Protocol Analyzer User’s ManualCATC Version 1.6
Recording Mode
To record Bluetooth™ traffic, the Merlin analyzer needs to synchronize to
the piconet under observation. Merlin does not participate in the piconet and
behaves as a passive listener. It needs, however, to communicate briefly
with the devices in the piconet to learn the Master clock and frequency
hopping sequence.
To synchronize to the piconet under observation, Merlin can be set up in
different recording modes. Two drop-down menus present these modes:
Inquiry Recording and Piconet Recording.
Inquiry Recording
The "Inquiry Recording" drop-down menu presents two choices for
recording Inquiries: "General (Unlimited)" and "Dedicated (Limited)."
General (Unlimited)
"General" means "General Inquiry" and is used to search for ALL
Bluetooth™ devices that are within range, for the amount of time specified
in the Inquiry Timeout field. Completion of the inquiry process is indicated
by illumination of the "trigger" light on the front of the analyzer. All
responding packets will be displayed when data upload from the analyzer
completes.
Dedicated (Limited)
"Dedicated" means a specific class or group of Bluetooth™ devices
(designated by the DIAC field of the Recording Options dialog). Selecting
"Dedicated" causes Merlin to search for all devices from a specific class or
group that are within range, for the amount of time specified in the Inquiry
Timeout field. Completion of the inquiry process is indicated by
illumination of the "trigger" light on the front of the analyzer. All
responding packets will be displayed when stop is selected.
Piconet Recording
The "Piconet Recording" drop-down menu presents three choices for
recording piconet traffic: Sync and Record, Passive Sync & Record, and
Page Sync & Record.
A Help button next to the menu briefly explains these options.
Page Sync & Record is the preferred option and should be used whenever
possible. If Page Sync & Record can not be used, then Sync & Record
should be used. Passive Sync and Record should be used only if the first
two options can not be used.