Wireless Channel

During commissioning, the user defines the wireless channel used by PowerTag system for wireless bidirectional communication between the gateway and the paired wireless devices.

The value can be set from channel 11 to 26 in gateway webpage. Each channel is 2 MHz wide with an unused spacing of 5 MHz.

The following figure shows the radio frequency bandwidth per PowerTag system channel:

The frequency range associated to the selected channel in a gateway can be also used by another wireless system such as Wi-Fi network and third-party wireless equipment around it.

NOTE: In case of two contiguous wireless systems (PowerTag system or third-party radio frequency system such as Wi-Fi network), the system can run on the same bandwidth without any problem. However, it is recommended to segregate two different non-contiguous channels in the design phase (refer to Rule WCAP2).

The following figure shows the radio frequency bandwidth per Wi-Fi channel:

For example, Wi-Fi channel 6 (2427–2447 MHz bandwidth) and PowerTag system wireless channels 16, 17, 18, and 19 (2429–2431 MHz, 2434–2436 MHz,
2439–2441 MHz, 2444–2446 MHz bandwidth respectively) are based on the same frequency range. Hence, it is recommended to avoid these channels.

A free channel analyzer software such as Chanalyser 4 software can be used on PC or smartphone to analyze the radio frequency occupation before defining the PowerTag system channels.