User's Manual

9
A UWB device operating under the provisions of this section shall transmit
only when it is sending information to an associated receiver. The UWB
intentional radiator shall cease transmission within 10 seconds unless it
receives an acknowledgement from the associated receiver that its
transmission is being received. An acknowledgement of reception must
continue to be received by the UWB intentional radiator at least every 10
seconds or the UWB device must cease transmitting.
Per FCC regulations, an intentional radiator may only transmit when
communicating with an associated receiver. This continuous transmit mode
is for evaluation purpose only.
In end-user applications, this handled through handshaking,
acknowledgements, negotiation of the communication channel, and other
mechanisms that ensure the transmitter is active when communicating with
a receiver.