User's Manual
48•SoftwarePhysioTelDigitalConfigurationManual
TRX CCA RSSI History
CCA is an acronym for Clear Channel Assessment. According to certain RF regulation environments, it is
necessary to invoke a “listen before you talk” policy. The Clear Channel Assessment operation determines
whether the wireless medium is busy or idle. The CLC can then make a decision on whether to attempt
communication.
The CLC will display the RSSI value of what the TRX is receiving. If the TRX picks up a significant signal
from a competing device the CLC delays the transmission of a command to the implant. If the interfering
signal persists, communication with the implants may be disrupted.
• The CLC will try to avoid talking in a noisy RF environment.
• The CLC will display an RSSI value of what the TRX is picking up in the Join window.
• In Europe the “Listen Before Talk” function is enabled by default.
• In the United States the “Listen Before Talk” function is disabled by default.
• There will be one plot for each of the TRXs assigned to the CLC.
• To set the auto refresh rate of the graph click on the drop-down menu at the top of the screen and
select a new value.