Changes for page NDDS75 -- NB-IoT Distance Detect Sensor User Manual
Last modified by Bei Jinggeng on 2024/05/31 09:53
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... ... @@ -880,38 +880,20 @@ 880 880 881 881 == 4.1 How to change the LoRa Frequency Bands/Region? == 882 882 883 -((( 884 884 You can follow the instructions for [[how to upgrade image>>||anchor="H2.10200BFirmwareChangeLog"]]. 885 885 When downloading the images, choose the required image file for download. 886 -))) 887 887 888 -((( 889 - 890 -))) 891 891 892 -((( 893 893 How to set up LSE01 to work in 8 channel mode By default, the frequency bands US915, AU915, CN470 work in 72 frequencies. Many gateways are 8 channel gateways, and in this case, the OTAA join time and uplink schedule is long and unpredictable while the end node is hopping in 72 frequencies. 894 -))) 895 895 896 -((( 897 - 898 -))) 899 899 900 -((( 901 901 You can configure the end node to work in 8 channel mode by using the AT+CHE command. The 500kHz channels are always included for OTAA. 902 -))) 903 903 904 -((( 905 - 906 -))) 907 907 908 -((( 909 909 For example, in **US915** band, the frequency table is as below. By default, the end node will use all channels (0~~71) for OTAA Join process. After the OTAA Join, the end node will use these all channels (0~~71) to send uplink packets. 910 -))) 911 911 912 912 [[image:image-20220606154726-3.png]] 913 913 914 - 915 915 When you use the TTN network, the US915 frequency bands use are: 916 916 917 917 * 903.9 - SF7BW125 to SF10BW125 ... ... @@ -924,9 +924,7 @@ 924 924 * 905.3 - SF7BW125 to SF10BW125 925 925 * 904.6 - SF8BW500 926 926 927 -((( 928 928 Because the end node is now hopping in 72 frequency, it makes it difficult for the devices to Join the TTN network and uplink data. To solve this issue, you can access the device via the AT commands and run: 929 -))) 930 930 931 931 (% class="box infomessage" %) 932 932 ((( ... ... @@ -938,17 +938,10 @@ 938 938 **ATZ** 939 939 ))) 940 940 941 -((( 942 942 to set the end node to work in 8 channel mode. The device will work in Channel 8-15 & 64-71 for OTAA, and channel 8-15 for Uplink. 943 -))) 944 944 945 -((( 946 - 947 -))) 948 948 949 -((( 950 950 The **AU915** band is similar. Below are the AU915 Uplink Channels. 951 -))) 952 952 953 953 [[image:image-20220606154825-4.png]] 954 954 ... ... @@ -1019,8 +1019,6 @@ 1019 1019 = 7. Packing Info = 1020 1020 1021 1021 ((( 1022 - 1023 - 1024 1024 **Package Includes**: 1025 1025 ))) 1026 1026 ... ... @@ -1029,6 +1029,10 @@ 1029 1029 ))) 1030 1030 1031 1031 ((( 1003 + 1004 +))) 1005 + 1006 +((( 1032 1032 **Dimension and weight**: 1033 1033 ))) 1034 1034