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Last modified by Mengting Qiu on 2025/07/03 18:55
From version 148.1
edited by Edwin Chen
on 2024/03/17 00:13
Change comment: There is no comment for this version
To version 153.1
edited by Mengting Qiu
on 2024/04/17 18:07
Change comment: Uploaded new attachment "image-20240417180737-3.png", version {1}

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1 -XWiki.Edwin
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25 25  1. Power Off End Node ( See below for the power off/on position)
26 26  1. Insert the SIM card to Sensor. ( See below for direction)
27 27  1. Power On End Node
28 -1. [[Configure APN>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20configure%20APN%20in%20the%20node/]] in the sensor (AT+APN=<APN>)
28 +1. [[Configure APN>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20configure%20APN%20in%20the%20node/]] in the sensor (AT+APN=<APN>), example AT+APN=iot.1nce.net
29 29  
30 30  [[image:image-20240208102804-1.png||height="286" width="696"]]
31 31  
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48 48  == 2.2 Speed Up Network Attach time ==
49 49  
50 50  
51 -BC660K-GL supports multi bands (% style="color:blue" %)**B1/B2/B3/B4/B5/B8/B12/B13/B14/B17/B18/B19/B20/B25/B28/B66/B70/B85. **(%%) It will search one by one and try to attach, this will take a lot of time and even cause attach fail and show Signal Strenght:99. User can lock the band to specify band for its operator to make this faster.
51 +BC660K-GL supports multi bands (% style="color:blue" %)**B1/B2/B3/B4/B5/B8/B12/B13/B14/B17/B18/B19/B20/B25/B28/B66/B70/B85. **(%%) It will search one by one and try to attach, this will take a lot of time and even cause attach fail and show **Signal Strenght:99**. User can lock the band to specify band for its operator to make this faster.
52 52  
53 53  (% style="color:#037691" %)**AT+QBAND?       **(%%) ~/~/ Check what is the current used frequency band
54 54  (% style="color:#037691" %)**AT+QBAND=1,4    **(%%) ~/~/ Set to use 1 frequency band. Band4
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651 651  1*. **AT+TR=1800** ~/~/ The unit is seconds, and the default is to record data once every 1800 seconds (30 minutes, the minimum can be set to 180 seconds)
652 652  1*. **AT+NOUD=24** ~/~/  The device uploads 24 sets of recorded data by default. Up to 32 sets of record data can be uploaded.
653 653  1*. **AT+TDC=7200**  ~/~/ Uplink every 2 hours.
654 -1*. this will mean each uplink will actually include the 6 uplink data (24 set data which cover 12 hours). So if device doesn;t lost 6 continue data. There will not data lost.
654 +1*. this will mean each uplink will actually include the 6 uplink data (24 set data which cover 12 hours). So if device doesn't lost 6 continue data. There will not data lost.
655 655  
656 -
657 657  == 4.2 Why the uplink JSON format is not standard? ==
658 658  
658 +
659 659  The json format in uplink packet is not standard Json format. Below is the example. This is to make the payload as short as possible, due to NB-IoT transmit limition, a standard Json is not able to include 32 sets of sensors data with timestamp.
660 660  
661 661  The firmware version released after 2024, Mar will use change back to use Json format. Detail please check changelog.
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740 740  When the MCU is communicating with the NB-IoT module, the MCU response of AT Command will become slower, it might takes several seconds to response.
741 741  
742 742  [[image:image-20240226111928-1.png]]
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