Last modified by Mengting Qiu on 2025/08/06 17:02

From version 174.11
edited by Xiaoling
on 2022/06/15 10:44
Change comment: There is no comment for this version
To version 173.4
edited by Xiaoling
on 2022/06/15 10:13
Change comment: There is no comment for this version

Summary

Details

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Content
... ... @@ -362,8 +362,6 @@
362 362  * If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
363 363  * If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
364 364  
365 -
366 -
367 367  === 2.3.3  Interrupt Pin ===
368 368  
369 369  This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.2A0SetInterruptMode"]] for the hardware and software set up.
... ... @@ -485,227 +485,650 @@
485 485  
486 486  
487 487  
488 -== 2.6  LED Indicator ==
486 +== 2.6  Frequency Plans ==
489 489  
490 -The LDDS20 has an internal LED which is to show the status of different state.
488 +(((
489 +The LDDS75 uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.
490 +)))
491 491  
492 492  
493 -* Blink once when device power on.
494 -* The device detects the sensor and flashes 5 times.
495 -* Solid ON for 5 seconds once device successful Join the network.
496 -* Blink once when device transmit a packet.
497 497  
494 +=== 2.6.1  EU863-870 (EU868) ===
498 498  
496 +(((
497 +(% style="color:blue" %)**Uplink:**
498 +)))
499 499  
500 -== 2.7  ​Firmware Change Log ==
500 +(((
501 +868.1 - SF7BW125 to SF12BW125
502 +)))
501 501  
504 +(((
505 +868.3 - SF7BW125 to SF12BW125 and SF7BW250
506 +)))
502 502  
503 503  (((
504 -**Firmware download link:  **[[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/]]
509 +868.5 - SF7BW125 to SF12BW125
505 505  )))
506 506  
507 507  (((
513 +867.1 - SF7BW125 to SF12BW125
514 +)))
515 +
516 +(((
517 +867.3 - SF7BW125 to SF12BW125
518 +)))
519 +
520 +(((
521 +867.5 - SF7BW125 to SF12BW125
522 +)))
523 +
524 +(((
525 +867.7 - SF7BW125 to SF12BW125
526 +)))
527 +
528 +(((
529 +867.9 - SF7BW125 to SF12BW125
530 +)))
531 +
532 +(((
533 +868.8 - FSK
534 +)))
535 +
536 +(((
508 508  
509 509  )))
510 510  
511 511  (((
512 -**Firmware Upgrade Method:  [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]**
541 +(% style="color:blue" %)**Downlink:**
513 513  )))
514 514  
544 +(((
545 +Uplink channels 1-9 (RX1)
546 +)))
515 515  
548 +(((
549 +869.525 - SF9BW125 (RX2 downlink only)
550 +)))
516 516  
517 -== 2.8  Battery Analysis ==
518 518  
519 519  
554 +=== 2.6.2  US902-928(US915) ===
520 520  
556 +(((
557 +Used in USA, Canada and South America. Default use CHE=2
521 521  
522 -=== 2.8.1  Battery Type ===
559 +(% style="color:blue" %)**Uplink:**
523 523  
524 -The LDDS20 battery is a combination of a 8500mAh Li/SOCI2 Battery and a Super Capacitor. The battery is non-rechargeable battery type with a low discharge rate (<2% per year). This type of battery is commonly used in IoT devices such as water meter.
561 +903.9 - SF7BW125 to SF10BW125
525 525  
563 +904.1 - SF7BW125 to SF10BW125
526 526  
527 -The battery related documents as below:
565 +904.3 - SF7BW125 to SF10BW125
528 528  
529 -* (((
530 -[[Battery Dimension>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
567 +904.5 - SF7BW125 to SF10BW125
568 +
569 +904.7 - SF7BW125 to SF10BW125
570 +
571 +904.9 - SF7BW125 to SF10BW125
572 +
573 +905.1 - SF7BW125 to SF10BW125
574 +
575 +905.3 - SF7BW125 to SF10BW125
576 +
577 +
578 +(% style="color:blue" %)**Downlink:**
579 +
580 +923.3 - SF7BW500 to SF12BW500
581 +
582 +923.9 - SF7BW500 to SF12BW500
583 +
584 +924.5 - SF7BW500 to SF12BW500
585 +
586 +925.1 - SF7BW500 to SF12BW500
587 +
588 +925.7 - SF7BW500 to SF12BW500
589 +
590 +926.3 - SF7BW500 to SF12BW500
591 +
592 +926.9 - SF7BW500 to SF12BW500
593 +
594 +927.5 - SF7BW500 to SF12BW500
595 +
596 +923.3 - SF12BW500(RX2 downlink only)
597 +
598 +
599 +
531 531  )))
532 -* (((
533 -[[Lithium-Thionyl Chloride Battery  datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
601 +
602 +=== 2.6.3  CN470-510 (CN470) ===
603 +
604 +(((
605 +Used in China, Default use CHE=1
534 534  )))
535 -* (((
536 -[[Lithium-ion Battery-Capacitor datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
607 +
608 +(((
609 +(% style="color:blue" %)**Uplink:**
537 537  )))
538 538  
539 - [[image:image-20220615102527-16.png]]
612 +(((
613 +486.3 - SF7BW125 to SF12BW125
614 +)))
540 540  
616 +(((
617 +486.5 - SF7BW125 to SF12BW125
618 +)))
541 541  
620 +(((
621 +486.7 - SF7BW125 to SF12BW125
622 +)))
542 542  
543 -== 2.8.2  Battery Note ==
624 +(((
625 +486.9 - SF7BW125 to SF12BW125
626 +)))
544 544  
545 -The Li-SICO battery is designed for small current / long period application. It is not good to use a high current, short period transmit method. The recommended minimum period for use of this battery is 5 minutes. If you use a shorter period time to uplink data, then the battery life may be decreased.
628 +(((
629 +487.1 - SF7BW125 to SF12BW125
630 +)))
546 546  
632 +(((
633 +487.3 - SF7BW125 to SF12BW125
634 +)))
547 547  
636 +(((
637 +487.5 - SF7BW125 to SF12BW125
638 +)))
548 548  
549 -=== 2.8.3  Replace the battery ===
640 +(((
641 +487.7 - SF7BW125 to SF12BW125
642 +)))
550 550  
551 551  (((
552 -You can change the battery in the LDDS75.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won't be voltage drop between battery and main board.
645 +
553 553  )))
554 554  
555 555  (((
649 +(% style="color:blue" %)**Downlink:**
650 +)))
651 +
652 +(((
653 +506.7 - SF7BW125 to SF12BW125
654 +)))
655 +
656 +(((
657 +506.9 - SF7BW125 to SF12BW125
658 +)))
659 +
660 +(((
661 +507.1 - SF7BW125 to SF12BW125
662 +)))
663 +
664 +(((
665 +507.3 - SF7BW125 to SF12BW125
666 +)))
667 +
668 +(((
669 +507.5 - SF7BW125 to SF12BW125
670 +)))
671 +
672 +(((
673 +507.7 - SF7BW125 to SF12BW125
674 +)))
675 +
676 +(((
677 +507.9 - SF7BW125 to SF12BW125
678 +)))
679 +
680 +(((
681 +508.1 - SF7BW125 to SF12BW125
682 +)))
683 +
684 +(((
685 +505.3 - SF12BW125 (RX2 downlink only)
686 +)))
687 +
688 +
689 +
690 +=== 2.6.4  AU915-928(AU915) ===
691 +
692 +(((
693 +Default use CHE=2
694 +
695 +(% style="color:blue" %)**Uplink:**
696 +
697 +916.8 - SF7BW125 to SF12BW125
698 +
699 +917.0 - SF7BW125 to SF12BW125
700 +
701 +917.2 - SF7BW125 to SF12BW125
702 +
703 +917.4 - SF7BW125 to SF12BW125
704 +
705 +917.6 - SF7BW125 to SF12BW125
706 +
707 +917.8 - SF7BW125 to SF12BW125
708 +
709 +918.0 - SF7BW125 to SF12BW125
710 +
711 +918.2 - SF7BW125 to SF12BW125
712 +
713 +
714 +(% style="color:blue" %)**Downlink:**
715 +
716 +923.3 - SF7BW500 to SF12BW500
717 +
718 +923.9 - SF7BW500 to SF12BW500
719 +
720 +924.5 - SF7BW500 to SF12BW500
721 +
722 +925.1 - SF7BW500 to SF12BW500
723 +
724 +925.7 - SF7BW500 to SF12BW500
725 +
726 +926.3 - SF7BW500 to SF12BW500
727 +
728 +926.9 - SF7BW500 to SF12BW500
729 +
730 +927.5 - SF7BW500 to SF12BW500
731 +
732 +923.3 - SF12BW500(RX2 downlink only)
733 +
734 +
556 556  
557 557  )))
558 558  
738 +=== 2.6.5  AS920-923 & AS923-925 (AS923) ===
739 +
559 559  (((
560 -The default battery pack of LDDS75 includes a ER18505 plus super capacitor. If user can't find this pack locally, they can find ER18505 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
741 +(% style="color:blue" %)**Default Uplink channel:**
561 561  )))
562 562  
744 +(((
745 +923.2 - SF7BW125 to SF10BW125
746 +)))
563 563  
748 +(((
749 +923.4 - SF7BW125 to SF10BW125
750 +)))
564 564  
565 -== 2.8.4  Battery Life Analyze ==
752 +(((
753 +
754 +)))
566 566  
567 -Dragino battery powered products are all run in Low Power mode. User can check the guideline from this link to calculate the estimate battery life:
756 +(((
757 +(% style="color:blue" %)**Additional Uplink Channel**:
758 +)))
568 568  
569 -[[https:~~/~~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf]]
760 +(((
761 +(OTAA mode, channel added by JoinAccept message)
762 +)))
570 570  
764 +(((
765 +
766 +)))
571 571  
768 +(((
769 +(% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
770 +)))
572 572  
573 -= 3.  Using the AT Commands =
772 +(((
773 +922.2 - SF7BW125 to SF10BW125
774 +)))
574 574  
575 575  (((
777 +922.4 - SF7BW125 to SF10BW125
778 +)))
779 +
576 576  (((
781 +922.6 - SF7BW125 to SF10BW125
782 +)))
783 +
784 +(((
785 +922.8 - SF7BW125 to SF10BW125
786 +)))
787 +
788 +(((
789 +923.0 - SF7BW125 to SF10BW125
790 +)))
791 +
792 +(((
793 +922.0 - SF7BW125 to SF10BW125
794 +)))
795 +
796 +(((
577 577  
578 578  )))
799 +
800 +(((
801 +(% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
579 579  )))
580 580  
581 -== 3.1  Access AT Commands ==
804 +(((
805 +923.6 - SF7BW125 to SF10BW125
806 +)))
582 582  
583 -LDDS20 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LDDS20 for using AT command, as below.
808 +(((
809 +923.8 - SF7BW125 to SF10BW125
810 +)))
584 584  
812 +(((
813 +924.0 - SF7BW125 to SF10BW125
814 +)))
585 585  
586 -[[image:image-20220610172924-4.png||height="483" width="988"]]
816 +(((
817 +924.2 - SF7BW125 to SF10BW125
818 +)))
587 587  
820 +(((
821 +924.4 - SF7BW125 to SF10BW125
822 +)))
588 588  
589 -Or if you have below board, use below connection:
824 +(((
825 +924.6 - SF7BW125 to SF10BW125
826 +)))
590 590  
828 +(((
829 +
830 +)))
591 591  
592 -[[image:image-20220610172924-5.png]]
832 +(((
833 +(% style="color:blue" %)**Downlink:**
834 +)))
593 593  
836 +(((
837 +Uplink channels 1-8 (RX1)
838 +)))
594 594  
595 595  (((
596 -In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LDDS20. LDDS20 will output system info once power on as below:
841 +923.2 - SF10BW125 (RX2)
597 597  )))
598 598  
599 599  
600 - [[image:image-20220610172924-6.png||height="601" width="860"]]
601 601  
602 -Below are the available commands, a more detailed AT Command manual can be found at [[AT Command Manual>>https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/]].
846 +=== 2.6.6  KR920-923 (KR920) ===
603 603  
848 +(((
849 +(% style="color:blue" %)**Default channel:**
850 +)))
604 604  
605 -AT+<CMD>?  :  Help on <CMD>
852 +(((
853 +922.1 - SF7BW125 to SF12BW125
854 +)))
606 606  
607 -AT+<CMD>  :  Run <CMD>
856 +(((
857 +922.3 - SF7BW125 to SF12BW125
858 +)))
608 608  
609 -AT+<CMD>=<value>  :  Set the value
860 +(((
861 +922.5 - SF7BW125 to SF12BW125
862 +)))
610 610  
611 -AT+<CMD>=?  :  Get the value
864 +(((
865 +
866 +)))
612 612  
868 +(((
869 +(% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
870 +)))
613 613  
614 -**General Commands :** 
872 +(((
873 +922.1 - SF7BW125 to SF12BW125
874 +)))
615 615  
616 -AT                    : Attention       
876 +(((
877 +922.3 - SF7BW125 to SF12BW125
878 +)))
617 617  
618 -AT?                            : Short Help     
880 +(((
881 +922.5 - SF7BW125 to SF12BW125
882 +)))
619 619  
620 -ATZ                            : MCU Reset    
884 +(((
885 +922.7 - SF7BW125 to SF12BW125
886 +)))
621 621  
622 -AT+TDC           : Application Data Transmission Interval 
888 +(((
889 +922.9 - SF7BW125 to SF12BW125
890 +)))
623 623  
892 +(((
893 +923.1 - SF7BW125 to SF12BW125
894 +)))
624 624  
625 -**Keys, IDs and EUIs management :**
896 +(((
897 +923.3 - SF7BW125 to SF12BW125
898 +)))
626 626  
627 -AT+APPEUI              : Application EUI      
900 +(((
901 +
902 +)))
628 628  
629 -AT+APPKEY              : Application Key     
904 +(((
905 +(% style="color:blue" %)**Downlink:**
906 +)))
630 630  
631 -AT+APPSKEY            : Application Session Key
908 +(((
909 +Uplink channels 1-7(RX1)
910 +)))
632 632  
633 -AT+DADDR              : Device Address     
912 +(((
913 +921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
914 +)))
634 634  
635 -AT+DEUI                   : Device EUI     
636 636  
637 -AT+NWKID               : Network ID (You can enter this command change only after successful network connection) 
638 638  
639 -AT+NWKSKEY          : Network Session Key Joining and sending date on LoRa network  
918 +=== 2.6.7  IN865-867 (IN865) ===
640 640  
641 -AT+CFM          : Confirm Mode       
920 +(((
921 +(% style="color:blue" %)**Uplink:**
922 +)))
642 642  
643 -AT+CFS                     : Confirm Status       
924 +(((
925 +865.0625 - SF7BW125 to SF12BW125
926 +)))
644 644  
645 -AT+JOIN          : Join LoRa? Network       
928 +(((
929 +865.4025 - SF7BW125 to SF12BW125
930 +)))
646 646  
647 -AT+NJM          : LoRa? Network Join Mode    
932 +(((
933 +865.9850 - SF7BW125 to SF12BW125
934 +)))
648 648  
649 -AT+NJS                     : LoRa? Network Join Status    
936 +(((
937 +
938 +)))
650 650  
651 -AT+RECV                  : Print Last Received Data in Raw Format
940 +(((
941 +(% style="color:blue" %)**Downlink:**
942 +)))
652 652  
653 -AT+RECVB                : Print Last Received Data in Binary Format      
944 +(((
945 +Uplink channels 1-3 (RX1)
946 +)))
654 654  
655 -AT+SEND                  : Send Text Data      
948 +(((
949 +866.550 - SF10BW125 (RX2)
950 +)))
656 656  
657 -AT+SENB                  : Send Hexadecimal Data
658 658  
659 659  
660 -**LoRa Network Management :**
954 +== 2.7  LED Indicator ==
661 661  
662 -AT+ADR          : Adaptive Rate
956 +The LDDS75 has an internal LED which is to show the status of different state.
663 663  
664 -AT+CLASS                : LoRa Class(Currently only support class A
665 665  
666 -AT+DCS           : Duty Cycle Setting 
959 +* Blink once when device power on.
960 +* The device detects the sensor and flashes 5 times.
961 +* Solid ON for 5 seconds once device successful Join the network.
962 +* Blink once when device transmit a packet.
667 667  
668 -AT+DR                      : Data Rate (Can Only be Modified after ADR=0)     
964 +== 2.8  ​Firmware Change Log ==
669 669  
670 -AT+FCD           : Frame Counter Downlink       
671 671  
672 -AT+FCU           : Frame Counter Uplink   
967 +(((
968 +**Firmware download link: **[[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/]]
969 +)))
673 673  
674 -AT+JN1DL                : Join Accept Delay1
971 +(((
972 +
973 +)))
675 675  
676 -AT+JN2DL                : Join Accept Delay2
975 +(((
976 +**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
977 +)))
677 677  
678 -AT+PNM                   : Public Network Mode   
679 679  
680 -AT+RX1DL                : Receive Delay1      
681 681  
682 -AT+RX2DL                : Receive Delay2      
981 +== 2.9  Mechanical ==
683 683  
684 -AT+RX2DR               : Rx2 Window Data Rate 
685 685  
686 -AT+RX2FQ               : Rx2 Window Frequency
984 +[[image:image-20220610172003-1.png]]
687 687  
688 -AT+TXP           : Transmit Power
689 689  
987 +[[image:image-20220610172003-2.png]]
690 690  
691 -**Information :**
692 692  
693 -AT+RSSI           : RSSI of the Last Received Packet   
694 694  
695 -AT+SNR           : SNR of the Last Received Packet   
991 +== 2.10  Battery Analysis ==
696 696  
697 -AT+VER           : Image Version and Frequency Band       
993 +=== 2.10.1  Battery Type ===
698 698  
699 -AT+FDR           : Factory Data Reset
995 +The LDDS75 battery is a combination of a 4000mAh or 8500mAh Li/SOCI2 Battery and a Super Capacitor. The battery is non-rechargeable battery type with a low discharge rate (<2% per year). This type of battery is commonly used in IoT devices such as water meter.
700 700  
701 -AT+PORT                  : Application Port    
702 702  
703 -AT+CHS           : Get or Set Frequency (Unit: Hz) for Single Channel Mode
998 +The battery related documents as below:
704 704  
705 - AT+CHE                   : Get or Set eight channels mode, Only for US915, AU915, CN470
1000 +* (((
1001 +[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
1002 +)))
1003 +* (((
1004 +[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
1005 +)))
1006 +* (((
1007 +[[Lithium-ion Battery-Capacitor datasheet>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC_1520_datasheet.jpg]], [[Tech Spec>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC1520%20Technical%20Specification20171123.pdf]]
1008 +)))
706 706  
1010 + [[image:image-20220610172400-3.png]]
707 707  
708 708  
1013 +
1014 +=== 2.10.2  Replace the battery ===
1015 +
1016 +(((
1017 +You can change the battery in the LDDS75.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won't be voltage drop between battery and main board.
1018 +)))
1019 +
1020 +(((
1021 +
1022 +)))
1023 +
1024 +(((
1025 +The default battery pack of LDDS75 includes a ER18505 plus super capacitor. If user can't find this pack locally, they can find ER18505 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
1026 +)))
1027 +
1028 +
1029 +
1030 += 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
1031 +
1032 +(((
1033 +(((
1034 +Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
1035 +)))
1036 +)))
1037 +
1038 +* (((
1039 +(((
1040 +AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
1041 +)))
1042 +)))
1043 +* (((
1044 +(((
1045 +LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1046 +)))
1047 +)))
1048 +
1049 +(((
1050 +(((
1051 +
1052 +)))
1053 +
1054 +(((
1055 +There are two kinds of commands to configure LDDS75, they are:
1056 +)))
1057 +)))
1058 +
1059 +* (((
1060 +(((
1061 +(% style="color:#4f81bd" %)** General Commands**.
1062 +)))
1063 +)))
1064 +
1065 +(((
1066 +(((
1067 +These commands are to configure:
1068 +)))
1069 +)))
1070 +
1071 +* (((
1072 +(((
1073 +General system settings like: uplink interval.
1074 +)))
1075 +)))
1076 +* (((
1077 +(((
1078 +LoRaWAN protocol & radio related command.
1079 +)))
1080 +)))
1081 +
1082 +(((
1083 +(((
1084 +They are same for all Dragino Device which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
1085 +)))
1086 +)))
1087 +
1088 +(((
1089 +(((
1090 +
1091 +)))
1092 +)))
1093 +
1094 +* (((
1095 +(((
1096 +(% style="color:#4f81bd" %)** Commands special design for LDDS75**
1097 +)))
1098 +)))
1099 +
1100 +(((
1101 +(((
1102 +These commands only valid for LDDS75, as below:
1103 +)))
1104 +)))
1105 +
1106 +
1107 +
1108 +== 3.1  Access AT Commands ==
1109 +
1110 +LDDS75 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LDDS75 for using AT command, as below.
1111 +
1112 +[[image:image-20220610172924-4.png||height="483" width="988"]]
1113 +
1114 +
1115 +Or if you have below board, use below connection:
1116 +
1117 +
1118 +[[image:image-20220610172924-5.png]]
1119 +
1120 +
1121 +(((
1122 +In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LDDS75. LDDS75 will output system info once power on as below:
1123 +)))
1124 +
1125 +
1126 + [[image:image-20220610172924-6.png||height="601" width="860"]]
1127 +
1128 +
1129 +
709 709  == 3.2  Set Transmit Interval Time ==
710 710  
711 711  Feature: Change LoRaWAN End Node Transmit Interval.
image-20220615102527-16.png
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