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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... ... @@ -59,7 +59,6 @@ 59 59 * 4000mAh or 8500mAh Battery for long term use 60 60 61 61 62 - 63 63 == 1.3 Specification == 64 64 65 65 Measure Volume: Base on the centra pin of the probe, a cylinder with 7cm diameter and 10cm height. ... ... @@ -632,6 +632,8 @@ 632 632 * Solid ON for 5 seconds once device successful Join the network. 633 633 * Blink once when device transmit a packet. 634 634 634 + 635 + 635 635 == 2.9 Installation in Soil == 636 636 637 637 **Measurement the soil surface** ... ... @@ -879,20 +879,38 @@ 879 879 880 880 == 4.1 How to change the LoRa Frequency Bands/Region? == 881 881 883 +((( 882 882 You can follow the instructions for [[how to upgrade image>>||anchor="H2.10200BFirmwareChangeLog"]]. 883 883 When downloading the images, choose the required image file for download. 886 +))) 884 884 888 +((( 889 + 890 +))) 885 885 892 +((( 886 886 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 +))) 887 887 896 +((( 897 + 898 +))) 888 888 900 +((( 889 889 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 +))) 890 890 904 +((( 905 + 906 +))) 891 891 908 +((( 892 892 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 +))) 893 893 894 894 [[image:image-20220606154726-3.png]] 895 895 914 + 896 896 When you use the TTN network, the US915 frequency bands use are: 897 897 898 898 * 903.9 - SF7BW125 to SF10BW125 ... ... @@ -905,7 +905,9 @@ 905 905 * 905.3 - SF7BW125 to SF10BW125 906 906 * 904.6 - SF8BW500 907 907 927 +((( 908 908 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 +))) 909 909 910 910 (% class="box infomessage" %) 911 911 ((( ... ... @@ -917,10 +917,17 @@ 917 917 **ATZ** 918 918 ))) 919 919 941 +((( 920 920 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 +))) 921 921 945 +((( 946 + 947 +))) 922 922 949 +((( 923 923 The **AU915** band is similar. Below are the AU915 Uplink Channels. 951 +))) 924 924 925 925 [[image:image-20220606154825-4.png]] 926 926