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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... ... @@ -766,13 +766,12 @@ 766 766 767 767 768 768 769 -= 3. Using the AT Commands = 769 +1. Using the AT Commands 770 +11. Access AT Commands 770 770 771 -== 3.1 Access AT Commands == 772 - 773 773 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. 774 774 775 -[[image: 1654501986557-872.png]]774 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image018.png]] 776 776 777 777 778 778 Or if you have below board, use below connection: ... ... @@ -909,12 +909,16 @@ 909 909 When downloading the images, choose the required image file for download. 910 910 911 911 912 -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. 913 913 912 +How to set up LSE01 to work in 8 channel mode 914 914 914 +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. 915 + 916 + 915 915 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. 916 916 917 917 920 + 918 918 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. 919 919 920 920 [[image:image-20220606154726-3.png]] ... ... @@ -931,18 +931,11 @@ 931 931 * 905.3 - SF7BW125 to SF10BW125 932 932 * 904.6 - SF8BW500 933 933 934 - 935 935 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: 936 936 937 -(% class="box infomessage" %) 938 -((( 939 939 **AT+CHE=2** 940 -))) 941 941 942 -(% class="box infomessage" %) 943 -((( 944 944 **ATZ** 945 -))) 946 946 947 947 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. 948 948 ... ... @@ -955,6 +955,7 @@ 955 955 956 956 = 5. Trouble Shooting = 957 957 954 + 958 958 == 5.1 Why I can’t join TTN in US915 / AU915 bands? == 959 959 960 960 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. ... ... @@ -1042,3 +1042,4 @@ 1042 1042 * 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. 1043 1043 * 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]] 1044 1044 1042 +
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