Chapter 1: Product description
Wireless operation
The propagation delay in Step 2 is necessarily equal to the propagation delay in Step 6, and is
determined solely by the link range. There may be added delays between rx and tx on the master
and slave to minimize interference, as set up by the link planner or installer.
Figure 2 TDD cycle
Channel selection
The PTP 650 series links are capable of transmitting and receiving on the same channel or on
different channels. In other words, the slave-master direction may use a different channel from the
master-slave direction. Independent selection of transmit and receive frequencies can be useful in
planned networks or for countering interference.
When links operate in radar avoidance regions, each unit monitors its transmit channel for the
presence of radar signals. Therefore, the transmit and receive channels are always identical.
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