Tektronix BPA105, Руководство пользователя

Страница: 26 / 96

Acquiring Piconet Packet Data
1- 14
BPA105 Bluetooth Protocol Analyzer User Manual -- COMPANY CONFIDENTIAL
1/2001
Setting Up the Data Filter
Select Acquisition > Data Filter or click the shortcut button to display
the Data Filter set up dialog box. See Figure 1--5.
The data filter allows you to reduce the amount of data captured during a logging
session. This function can greatly reduce the size of the log file, making it easier
to work with the data.
You can set up the filter to ignore the following baseband packets: ID, NULL,
POLL, and Access Error packets.
Figure 1- 5: Data Filter set up dialog box
Setting Up Triggers
Use the following information to learn more about triggers:
H
CIDs (Channel Identifiers) are logical endpoints used in the L2CAP layer to
connect with other devices and are vendor-specific. From 0x0040--0xffff, a
vendor can implement as needed.
H
If you use a Bluetooth device other than Digianswer, the vendor might have
used a different CID in the L2CAP layer.
H
For Digianswer devices, the SDP layer uses 0x0040 and the RFCOMM layer
uses 0x0041. This information is available in the Comments portion of the
Customize pattern dialog in LLT. You can also recover this information
when performing service discovery for SDP and business card exchange for
RFCOMM.