Figure 4.67 - Each packet is color-coded
The innermost box (which indicates packet category/type) is the packet proper in that its vertical position
indicates the channel, its length indicates the packet’s duration in the air, its left edge indicates the start
time, and its right edge indicates the end time.
The height of Classic
Bluetooth
and
Bluetooth
low energy packets indicates their frequency range (1 MHz
and 2 MHz respectively). Since 802.11 channels are so wide (22 MHz), 802.11 packets are drawn with an
arbitrary 1 MHz height and centered within a separate frequency range box which indicates the actual
frequency range.
Selecting a packet by clicking on it draws a selection box around it (as shown above) and highlights the
applicable entries in the legend.
Figure 4.68 - Highlighted entries in the legend for a selected packet.
Summary information for a selected packet is displayed in the timeline header.
Figure 4.69 -
Timeline
header for a single selected packet.
When multiple packets are selected (by dragging the mouse with the left button held down, clicking one
packet and shift-clicking another, or clicking one packet and pressing shift-arrow), the header shows
Gap
(duration between the first and last selected packets),
Timestamp Delta
(difference between the
timestamps, which are at the beginning of each packet), and
Span
(duration from the beginning of the
first selected packet to the end of the last selected packet).
Chapter 4 Capturing and Analyzing Data
TELEDYNE LECROY
Frontline BPA low energy Hardware & Software User Manual
109
Summary of Contents for BPA LOW ENERGY
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