User manual

Figure 4.51 - Coexistence View Throughput Graph
The Throughput Graph is a line graph that shows packet and/or payload throughput over time as specified by
the radio buttons in the Throughput group. If the Both radio button is selected, packet and payload throughput
are shown as two separate lines for each technology. The payload throughput line is always below the packet
throughput line (unless both are 0).
The data lines and y-axis labels are color-coded: Blue = Classic Bluetooth, Green = Bluetooth low energy, Orange =
802.11. Each data point represents a duration which is initially 0.1 s. Each time the number of data points per line
reaches 300, the number of data points per line is halved to 150 and the duration per data point is doubled. The
duration per data point thus progresses from 0.1 s to 0.2 s to 0.4 s to 0.8 s and so on.
The y-axis labels show the throughput in bits per second. From left-to-right the labels are for 802.11,
Bluetooth low energy, and Classic Bluetooth. The duration of each data point must be taken into account for
the y-axis label’s value to be meaningful. For example, if a data point has a duration of 0.1 s and a bit count of
100, it will have a throughput of 1,000 bits/s, and the y-axis labels will be consistent with this.
Figure 4.52 - Throughput Graph y-axis labels.
Retransmitted packets and bad packets (packets with CRC or Header errors) are excluded from throughput
calculations.
Chapter 4 Capturing and Analyzing Data TELEDYNE LECROY
Frontline BPA low energy Hardware & Software User Manual 109