Bluetooth Analyzers
Page 178 of 264 | Instant Spectrum View
11. Instant Spectrum View
The
Instant Spectrum view
provides a unique and intuitive way to understand the spectral and other behaviors
of Bluetooth, Wi-Fi, and WPAN traffic, including all other RF events within the ISM spectrum that is used by
Bluetooth.
Bluetooth, Wi-Fi, and WPAN packets are presented chronologically left to right on the channel they are
transmitted and are uniquely color-coded per the packet’s sender. On the right, graphical per-channel statistics
on Bluetooth packet errors and retransmissions are presented in a graphical format. A variety of color-scheme
options are available to represent signal strength.
Note that certain features are included only with the optional Raw Spectrum feature. See
Section 1.1, Models,
Editions, and Configurations
for details.
The
Instant Spectrum
view is commonly used for characterization of wireless coexistence, hopping patterns,
AFH behaviors, a packet’s transmission frequency/channel, or simply for visualizing the RF environment. It
displays the RSSI of all RF events in all Bluetooth channels with a configurable precision of up to 1 microsecond
and displays this information in synchronization with Bluetooth and Wi-Fi packets.
Raw RF energy is displayed in blue, in an overlay fashion with captured Bluetooth and Wi-Fi packets. The RF
energy associated with Bluetooth packets is characterized by its relationship to its nominal channel frequency
with a fly-over.
The
Instant Spectrum
view provides for quick and easy timing measurements, slot timing, timing cursors,
frequency offset, zoom and pan features, detailed packet flyover, color-coded assignments to devices, and other
navigation tools.
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