WAGO-I/O-SYSTEM 758 Appendix 63758-915 Bluetooth ® ETHERNET GatewayManualVersion 1.1.0, applicable from FW/HW Version 01/018.4.3 Frequency Multiplexing (Switching of Channels with AFHand FHSS)WLAN and Bluetooth® are the most common technology systems that utilize thelicense-free 2.45 GHz frequency band.WLAN based on IEEE 802.11 b/g• 11 channels for use worldwide• 20 MHz bandwidth per channel• Maximum of 3 channels can be used without any overlapping, e.g., channels1, 6, 11ISM band: 2400 MHz ... 2483.5 MHzFigure 27: “Adaptive Frequency Hopping” (AFH) with WLAN exampleBluetooth ® based on IEEE 802.15.1• 79 channels for use worldwide• 1 MHz bandwidth per channelEach connection can utilize all channels using the “Frequency Hopping SpreadSpectrum” (FHSS). Only one channel is used at one time; this can be changed upto 1600 times per second.Figure 28: AFH with Bluetooth ® example
