User's Manual

Table Of Contents

CATC MERLIN MOBILE 1.00 CHAPTER 5

User’s Manual Recording Bluetooth Traffic

DRAFT

Step 7 (Optional) Set the Trace Filename & Path. Use this option to specify a name

and location for the Trace file that is generated with the current set of

recording options. If not specified, the default name, data.fdb, and the default

location, \Merlin Mobile, are used.

Step 8 Click OK to use the settings and close the Recording Options dialog

-or-

Continue configuring the recording options on the Modes, Events and

Actions tabs.

Note: You may also save the settings as a Recording Options (.rec) file. This will allow you to load the file

whenever you want to use those settings.

5.5.2 Setting Recording Mode Options

The Modes tab in the Recording Options dialog is used to configure the type of Bluetooth

traffic that Merlin Mobile will record, and also to configure the piconet parameters.

To record Bluetooth traffic, Merlin Mobile needs to synchronize to the piconet under

observation. Merlin Mobile behaves as a passive listener, but does not participate in the

piconet. However, it needs to communicate briefly with the devices in the piconet to learn

the master clock timing and frequency hopping sequences. Once Merlin Mobile has these

two pieces of information, it can synchronize with the devices and record the piconet traffic.

There are two possible recording modes:

• Inquiry Recording

• Piconet Recording

Inquiry Recording Mode Options

Making a recording using Inquiry Recording mode causes Merlin Mobile to perform an

inquiry to detect Bluetooth devices within range. Meanwhile, Merlin Mobile records all the

inquiry data and uploads it as a Trace file when the inquiry is complete. Additionally, the

master and slave device addresses will be inserted into the Master Address and Page Target

drop down lists for Piconet Recording. This makes Inquiry Recording a useful tool for

setting up a Piconet Recording.

To set parameters for an Inquiry Recording:

Step 1 Open the Recording Options dialog and select the Modes tab.

Step 2 In the Recording Mode section, make sure that Inquiry Recording is selected.

If Inquiry Recording wasn't already selected, the options on the Mode tab

will change so that you can configure the inquiry parameters.

Step 3 Set the hop sequence.

Note: Merlin Mobile supports only the standard 79-frequency hopping mode that is

used by most Bluetooth devices. The 79-frequency hopping mode will be

used by Merlin Mobile to record the traffic.