Issue link: https://read.uberflip.com/i/1428359
LoRaWAN 1.0.3 Regional Parameters ©2018 LoRa™ Alliance Page 45 of 71 The authors reserve the right to change specifications without notice. ChMaskCntl ChMask applies to 0 Channels 0 to 15 1 Channels 16 to 31 2 Channels 32 to 47 3 Channels 48 to 63 4 Channels 64 to 79 5 Channels 80 to 95 6 All channels ON The device SHOULD enable all currently defined channels independently of the ChMask field value. 7 RFU Table 43: CN470-510 ChMaskCntl value table 1086 If the ChMask field value is one of the values meaning RFU, then end-device SHOULD reject 1087 the command and unset the "Channel mask ACK" bit in its response. 1088 2.7.6 CN470-510 Maximum payload size 1089 The maximum MACPayload size length (M) is given by the following table. It is derived from 1090 the maximum allowed transmission time at the PHY layer taking into account a possible 1091 repeater encapsulation. The maximum application payload length in the absence of the 1092 optional FOpt MAC control field (N) is also given for information only. The value of N might be 1093 smaller if the FOpt field is not empty: 1094 DataRate M N 0 59 51 1 59 51 2 59 51 3 123 115 4 230 222 5 230 222 6:15 Not defined Table 44: CN470-510 maximum payload size 1095 If the end-device will never operate with a repeater then the maximum application payload 1096 length in the absence of the optional FOpt control field SHOULD be: 1097 1098 DataRate M N 0 59 51 1 59 51 2 59 51 3 123 115 4 250 242 5 250 242 6:15 Not defined Table 45 : CN470-510 maximum payload size (not repeater compatible) 1099 1100 2.7.7 CN470-510 Receive windows 1101 • The RX1 receive channel is a function of the upstream channel used to initiate the 1102 data exchange. The RX1 receive channel can be determined as follows. 1103 o RX1 Channel Number = Uplink Channel Number modulo 48, for example, 1104 when transmitting channel number is 49, the rx1 channel number is 1. 1105 • The RX1 window data rate depends on the transmit data rate (see Table below). 1106 • The RX2 (second receive window) settings uses a fixed data rate and frequency. 1107 Default parameters are 505.3 MHz / DR0 1108