User's Manual

10 Data rate Codec Indicators 17
7signal Ltd, Panuntie 6, FI-00620 HELSINKI, FINLAND, [phone], [e-mail], www.7signal.com
7signal Sapphire Loupe User Guide Release 3.1
10 DATA RATE CODEC INDICATORS
This view displays the distribution of radio codecs used during the active tests. The codec used
indicates the data transfer rate (Mbps). The use of small codecs is a sign of
interference/functionality problems in the radio network. In a properly functioning network,
the maximum data transfer rate is used almost continuously.
When the Active test measurement type is used, the picture displays the codecs of each access
point selected in the Topology view. When the Monitor test measurement type is used, the
picture displays the codecs for each client selected in the client list.
You can view a summary or a chronological distribution of the codecs. In the summary, the
codecs are aggregated as an average over the time span entered in the top bar.
10.1 Codec and channel history
Loupe provides an alternative view on codecs i.e. bitrates used by access points. This view is
not based on a single active test but events that affect bitrates and channels used by the
managed access points are stored in the database and thus available to Loupe.
The topology-tree provides the history by right-click pop-up menu on access point icons. The
change history is the last item in the pop-up window. Alternatively the Info tab has the a link
called “Show AP history” among other access point information. By following the link the
change history is available.