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l
If the
Viewport
is adjusted within PER Stats, as opposed to selecting a packet range in Frame Display , it
uses only whole bars on both sides.
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Statistics are retained for all packets regardless of whether any of those packets have wrapped out. You
can select the Reset button , which is located above the right portion of the Scroll Bar , to
discard all stats for packets received up to that point.
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The Reset button is only available when you are capturing data.
4.4.8 Packet Error Rate - Excluded Packets
ID packets and packets that are missing channel numbers (such as HCI and BTSnoop) will not display data. ID
packets are excluded because they can not have errors or indicate retransmission and therefore dilute the
percentages for other packet types. Packets without channel numbers are excluded because the graphs are
channel-specific. Before packets are captured, the Scroll Bar in Classic
Bluetooth PER Stats contains the
message "ID packets and packets without a channel number (such as HCI) are excluded", and the Scroll Bar in
Bluetooth low energy PER Stats contains the message "Packets without a channel number (such as HCI) are
excluded".
Figure 4.118 - Example: Excluded Packets Message in Scroll Bar (Classic Bluetooth )
4.5 Bluetooth Audio Expert System™
The Bluetooth Audio Expert System™ monitors and analyzes Bluetooth
audio streams with the purpose of detecting and reporting audio
impairments. The primary goal of the Audio Expert System™ is to
expedite the detection and resolution of
Bluetooth protocol related
audio impairments. To achieve this, the system automatically identifies
audio impairments and reports them to a user as “events”. It also
Chapter 4 Capturing and Analyzing Data TELEDYNE LECROY
Frontline BPA 600 Hardware & Software User Manual 190