Teledyne Lecroy Frontline BPA 600, Hardware And Software User Manual, Page: 190 / 348

Icon Name Description
Page navigation
If the data requires multiple pages, the
navigation buttons will take you to:
l
The first page
l
The previous page
l
The next page
l
The last page
Close Print Preview Closes the dialog and returns to the
Message Sequence Chart
Select Font Size Allows selection of the print font size
from the drop-down control.
Table 4.15 - Print Preview Icons (Continued)
4.4 Packet Error Rate Statistics
The
Packet Error Rate
(PER) Stats view provides a dynamic graphical representation of the Packet Error
Rate for each channel. The dialog displays a graph for each Classic Bluetooth channel numbered 0 through 78
and for each Bluetooth low energy channel numbered 0 through 39.
Packet Error Rate Stats assist in detecting bad communication connections. When a high percentage of re-
transmits, and/or header/payload errors occur, careful analysis of the statistics indicate whether the two
devices under test are experiencing trouble communicating, or the packet sniffer is having difficulty listening.
Generally, if the statistics display either a large number of re-transmits with few errors or an equal number of
errors and re-transmits, then the two devices are not communicating clearly. However, if the statistics display
a large number of errors and a small number of re-transmits, then the packet sniffer is not receiving the
transmissions clearly.
You can access this window in Classic Bluetooth by selecting the
Classic Bluetooth Packet Error Rates
Statistics icon from the Control window or Frame Display . You can access this window in
Bluetooth low energy by selecting the Bluetooth low energy Packet Error Rates Statistics icon
from the
Control
window or
Frame Display
. You can also open the window from the View menu on the
same windows.
Chapter 4 Capturing and Analyzing Data TELEDYNE LECROY
Frontline BPA 600 Hardware & Software User Manual 182