Radar Scanning in DFS Channels

The Edge system selects DFS channels by default, as these channels are less likely to contain traffic than the universal channels. When a DFS channel is selected, the system must carry out a channel scan to make sure that it is clear of radar. A scan occurs whenever the transceiver is going through it's connection sequence and also periodically while it is in use.

Radar scanning usually takes one minute per channel. You will see the status lights on the transceiver flash blue when a channel scan is occurring. The LEDs will flash blue/purple or blue/yellow if the device is starting up and acquiring PTP and sync lock at the same time. If radar is detected in a channel while the transceiver is connected to the system, transmission will drop into the backup channel. You will see a double red flash on the transceiver status light when radar is detected in a channel.

Note:

If you have not selected a backup channel, the transceiver will not transmit when radar is detected.

Backup channels are selected from non-DFS channels only as this reduces the risk that the transceiver will stop transmission due to radar activity.

The configuration software will report scanning for radar activity with explicit messaging.

To see transceiver messaging, in EHX navigate to Matrix > Diagnostics > Wireless Status.

If the transceiver is in standalone mode and radar is detected, the device will stop transmitting.

Note:

Non DFS channels do not require a channel scan or a backup channel.

For more information about transceiver status LEDs, see Edge Transceiver Status LEDs