Issue link: https://read.uberflip.com/i/1428362
LoRaWAN 1.0.2 Regional Parameters ©2017 LoRa Alliance™ Page 36 of 55 The authors reserve the right to change specifications without notice. RX1DROffset 0 1 2 3 4 5 Upstream data rate Downstream data rate in RX1 slot DR4 DR4 DR3 DR2 DR1 DR0 DR0 DR5 DR5 DR4 DR3 DR2 DR1 DR0 Table 45: CN470-510 downlink RX1 data rate mapping 961 962 The allowed values for RX1DROffset are in the [0:5] range. Values in the range [6:7] are 963 reserved for future use. 964 2.6.8 CN470-510 Class B beacon 965 The beacons are transmitted using the following settings: 966 DR 2 Corresponds to SF10 spreading factor with 125kHz bw CR 1 Coding rate = 4/5 Signal polarity Non-inverted As opposed to normal downlink traffic which uses inverted signal polarity frequencies 508.3 to 509.7MHz with 200kHz steps Table 46 : CN470-510 beacon settings 967 968 The downstream channel used for a given beacon is: 969 BeaconChannel = [ ( _ _ ) ] 8 970 whereby beacon_time is the integer value of the 4 bytes "Time" field of the beacon 971 frame 972 whereby beacon_period is the periodicity of beacons , 128 seconds 973 whereby floor(x) designates rounding to the integer immediately inferior or equal to x 974 975 Example: the first beacon will be transmitted on 508.3Mhz, the second 976 on 508.5MHz, the 9 th beacon will be on 508.3Mhz again. 977 978 979 Beacon channel nb Frequency [MHz] 0 508.3 1 508.5 2 508.7 3 508.9 4 509.1 5 509.3 6 509.5 7 509.7 980 981 The beacon frame content is: 982 Size (bytes) 3 4 2 7 1 2 BCNPayload RFU Time CRC GwSpecific RFU CRC 983