Changes for page N95S31B -- NB-IoT Temperature & Humidity Sensor User Manual
Last modified by Mengting Qiu on 2024/04/02 16:44
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... ... @@ -766,12 +766,13 @@ 766 766 767 767 768 768 769 -1. Using the AT Commands 770 -11. Access AT Commands 769 += 3. Using the AT Commands = 771 771 771 +== 3.1 Access AT Commands == 772 + 772 772 LSE01 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LSE01 for using AT command, as below. 773 773 774 -[[image: file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image018.png]]775 +[[image:1654501986557-872.png]] 775 775 776 776 777 777 Or if you have below board, use below connection: ... ... @@ -900,39 +900,24 @@ 900 900 901 901 902 902 903 -1. FAQ 904 -11. How to change the LoRa Frequency Bands/Region? 904 += 4. FAQ = 905 905 906 +== 4.1 How to change the LoRa Frequency Bands/Region? == 907 + 906 906 You can follow the instructions for [[how to upgrade image>>path:#3ygebqi]]. 907 907 When downloading the images, choose the required image file for download. 908 908 909 909 912 +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. 910 910 911 -How to set up LSE01 to work in 8 channel mode 912 912 913 -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. 914 - 915 - 916 916 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. 917 917 918 918 919 - 920 920 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. 921 921 920 +[[image:image-20220606154726-3.png]] 922 922 923 -|CHE|(% colspan="9" %)US915 Uplink Channels(125KHz,4/5,Unit:MHz,CHS=0) 924 -|0|(% colspan="9" %)ENABLE Channel 0-63 925 -|1|902.3|902.5|902.7|902.9|903.1|903.3|903.5|903.7|Channel 0-7 926 -|2|903.9|904.1|904.3|904.5|904.7|904.9|905.1|905.3|Channel 8-15 927 -|3|905.5|905.7|905.9|906.1|906.3|906.5|906.7|906.9|Channel 16-23 928 -|4|907.1|907.3|907.5|907.7|907.9|908.1|908.3|908.5|Channel 24-31 929 -|5|908.7|908.9|909.1|909.3|909.5|909.7|909.9|910.1|Channel 32-39 930 -|6|910.3|910.5|910.7|910.9|911.1|911.3|911.5|911.7|Channel 40-47 931 -|7|911.9|912.1|912.3|912.5|912.7|912.9|913.1|913.3|Channel 48-55 932 -|8|913.5|913.7|913.9|914.1|914.3|914.5|914.7|914.9|Channel 56-63 933 -|(% colspan="10" %)Channels(500KHz,4/5,Unit:MHz,CHS=0) 934 -| |903|904.6|906.2|907.8|909.4|911|912.6|914.2|Channel 64-71 935 - 936 936 When you use the TTN network, the US915 frequency bands use are: 937 937 938 938 * 903.9 - SF7BW125 to SF10BW125 ... ... @@ -945,11 +945,18 @@ 945 945 * 905.3 - SF7BW125 to SF10BW125 946 946 * 904.6 - SF8BW500 947 947 934 + 948 948 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: 949 949 937 +(% class="box infomessage" %) 938 +((( 950 950 **AT+CHE=2** 940 +))) 951 951 942 +(% class="box infomessage" %) 943 +((( 952 952 **ATZ** 945 +))) 953 953 954 954 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. 955 955 ... ... @@ -956,25 +956,12 @@ 956 956 957 957 The **AU915** band is similar. Below are the AU915 Uplink Channels. 958 958 952 +[[image:image-20220606154825-4.png]] 959 959 960 -|CHE|(% colspan="9" %)AU915 Uplink Channels(125KHz,4/5,Unit:MHz,CHS=0) 961 -|0|(% colspan="9" %)ENABLE Channel 0-63 962 -|1|915.2|915.4|915.6|915.8|916|916.2|916.4|916.6|Channel 0-7 963 -|2|916.8|917|917.2|917.4|917.6|917.8|918|918.2|Channel 8-15 964 -|3|918.4|918.6|918.8|919|919.2|919.4|919.6|919.8|Channel 16-23 965 -|4|920|920.2|920.4|920.6|920.8|921|921.2|921.4|Channel 24-31 966 -|5|921.6|921.8|922|922.2|922.4|922.6|922.8|923|Channel 32-39 967 -|6|923.2|923.4|923.6|923.8|924|924.2|924.4|924.6|Channel 40-47 968 -|7|924.8|925|925.2|925.4|925.6|925.8|926|926.2|Channel 48-55 969 -|8|926.4|926.6|926.8|927|927.2|927.4|927.6|927.8|Channel 56-63 970 -|(% colspan="10" %)Channels(500KHz,4/5,Unit:MHz,CHS=0) 971 -| |915.9|917.5|919.1|920.7|922.3|923.9|925.5|927.1|Channel 64-71 972 972 973 973 974 - 975 975 = 5. Trouble Shooting = 976 976 977 - 978 978 == 5.1 Why I can’t join TTN in US915 / AU915 bands? == 979 979 980 980 It is due to channel mapping. Please see the [[Eight Channel Mode>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]] section above for details. ... ... @@ -1062,4 +1062,3 @@ 1062 1062 * Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule. 1063 1063 * Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:http://../../../../../../D:%5C%E5%B8%82%E5%9C%BA%E8%B5%84%E6%96%99%5C%E8%AF%B4%E6%98%8E%E4%B9%A6%5CLoRa%5CLT%E7%B3%BB%E5%88%97%5Csupport@dragino.com]] 1064 1064 1065 -
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