Issue link: https://read.uberflip.com/i/1428362
LoRaWAN 1.0.2 Regional Parameters ©2017 LoRa Alliance™ Page 42 of 55 The authors reserve the right to change specifications without notice. RX1DROffset (Coded value) 0 1 2 3 4 5 6 7 Effective_RX1DROffset 0 1 2 3 4 5 -1 -2 Values in the [6:7] range allow setting the Downstream RX1 data rate higher than Upstream 1104 data rate. 1105 The RX2 receive window uses a fixed frequency and data rate. The default parameters are 1106 923.2 MHz / DR2 (SF10/125KHz). 1107 1108 2.7.8 AS923 Class B beacon and default downlink channel 1109 The beacons SHALL be transmitted using the following settings 1110 DR 3 Corresponds to SF9 spreading factor with 125 kHz BW CR 1 Coding rate = 4/5 Signal polarity Non-inverted As opposed to normal downlink traffic which uses inverted signal polarity Table 55 : AS923 beacon settings 1111 The beacon frame content is: 1112 Size (bytes) 2 4 2 7 2 BCNPayload RFU Time CRC GwSpecific CRC The beacon default broadcast frequency is 923.4MHz. 1113 The class B default downlink pingSlot frequency is 923.4MHz 1114 1115 2.7.9 AS923 Default Settings 1116 The following parameters are recommended values for the AS923MHz band. 1117 RECEIVE_DELAY1 1 s 1118 RECEIVE_DELAY2 2 s (must be RECEIVE_DELAY1 + 1s) 1119 JOIN_ACCEPT_DELAY1 5 s 1120 JOIN_ACCEPT_DELAY2 6 s 1121 MAX_FCNT_GAP 16384 1122 ADR_ACK_LIMIT 64 1123 ADR_ACK_DELAY 32 1124 ACK_TIMEOUT 2 +/- 1 s (random delay between 1 and 3 seconds) 1125 If the actual parameter values implemented in the end-device are different from those default 1126 values (for example the end-device uses a longer RECEIVE_DELAY1 and 1127 RECEIVE_DELAY2 latency), those parameters must be communicated to the network 1128 server using an out-of-band channel during the end-device commissioning process. The 1129 network server may not accept parameters different from those default values. 1130