User manual

1. Display filters allow a user to look at a subset of captured data without affecting the capture content.
Frames matching the filter criteria appear in the Frame Display; frames not matching the criteria will not
appear.
2. Connection filters Two options are available.
a. A Bluetooth connection: Displays only the frames associated with a Classic Bluetooth link or a
Bluetooth low energy access address. A new Frame Display will open showing only the protocol
tabs, frames, summary, and events associated with that particular Bluetooth connection.
b. A specific wireless or wired technology. Displays all of the frames associated with:
l Classic Bluetooth
l Bluetooth low energy
l 802.11
l HCI
A new Frame Display will open showing only the protocol tabs, frames, summary and events
associated with the selected technology.
4.3.1.13.1 Display Filters
A display filter looks at frames that have already been captured. It looks at every frame in the capture buffer and
displays those that match the filter criteria. Frames that do not match the filter criteria are not displayed. Display
filters allow a user to look at a subset of captured data without affecting the capture content. There are three
general classes of display filters:
l Protocol Filters
l Named Filters
l Quick Filter
Protocol Filters
Protocol filters test for the existence of a specific single layer. The system creates a protocol filter for each
decoder that is loaded if that layer is encountered in a capture session.
There are also three special purpose filters that are treated as protocol filters:
l All Frames with Errors
l All Frames with Bookmarks
l All Special Information Nodes
Named Filters
l Named filters test for anything other than simple single layer existence. Named filters can be constructed that
test for the existence of multiple layers, field values in layers, frame sizes, etc., as well as combinations of
those things. Named filters are persistent across sessions.
TELEDYNE LECROY Chapter 4 Capturing and Analyzing Data
62 Frontline BPA low energy Hardware & Software User Manual