Last modified by Mengting Qiu on 2025/07/03 18:55
From version 145.2
edited by Xiaoling
on 2024/03/01 10:15
on 2024/03/01 10:15
Change comment:
There is no comment for this version
To version 148.1
edited by Edwin Chen
on 2024/03/17 00:13
on 2024/03/17 00:13
Change comment:
There is no comment for this version
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... ... @@ -1,1 +1,1 @@ 1 -XWiki. Xiaoling1 +XWiki.Edwin - Content
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... ... @@ -51,10 +51,9 @@ 51 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 - 55 55 (% style="color:#037691" %)**AT+QBAND=1,4 **(%%) ~/~/ Set to use 1 frequency band. Band4 56 - 57 57 (% style="color:#037691" %)**Europe General**(%%) **AT+QBAND=2,8,20 ** ~/~/ Set to use 2 frequency bands. Band 8 and Band 20 56 +(% style="color:#037691" %)**Global General**(%%) : **AT+QBAND=10,8,20,28,2,4,12,13,66,85,5** 58 58 59 59 (% style="color:#037691" %)**Verizon**(%%)** ** AT+QBAND=1,13 60 60 (% style="color:#037691" %)**AT&T**(%%) AT+QBAND=3,12,4,2 ... ... @@ -655,12 +655,12 @@ 655 655 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. 656 656 657 657 658 - 659 659 == 4.2 Why the uplink JSON format is not standard? == 660 660 661 - 662 662 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. 663 663 661 +The firmware version released after 2024, Mar will use change back to use Json format. Detail please check changelog. 662 + 664 664 [[image:image-20240229233154-1.png]] 665 665 666 666 ... ... @@ -743,4 +743,3 @@ 743 743 [[image:image-20240226111928-1.png]] 744 744 745 745 746 -