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994	994
995	995	(% style="color:#037691" %)**Downlink Command: AT+INTMOD**
996	996
997		-[[image:image-20220610105907-1.png]]
	997	+[[image:image-20220610174917-9.png]]
998	998
999	999
1000	1000	(% style="color:#037691" %)**Downlink Command: 0x06**
...	...	@@ -1008,83 +1008,47 @@
1008	1008
1009	1009
1010	1010
	1011	+= 4.  FAQ =
1011	1011
1012		-= 6.  Use AT Command =
	1013	+== 4.1  What is the frequency plan for LDDS75? ==
1013	1013
1014		-== 6.1  Access AT Commands ==
	1015	+LDDS75 use the same frequency as other Dragino products. User can see the detail from this link:
1015	1015
1016		-LLDS12 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LLDS12 for using AT command, as below.
1017	1017
1018		-[[image:1654593668970-604.png]]
1019	1019
1020		-**Connection:**
	1019	+== 4.2  How to change the LoRa Frequency Bands/Region ==
1021	1021
1022		-(% style="background-color:yellow" %)** USB TTL GND <~-~-~-~-> GND**
	1021	+You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
	1022	+When downloading the images, choose the required image file for download. ​
1023	1023
1024		-(% style="background-color:yellow" %)** USB TTL TXD  <~-~-~-~-> UART_RXD**
1025	1025
1026		-(% style="background-color:yellow" %)** USB TTL RXD  <~-~-~-~-> UART_TXD**
1027	1027
	1026	+== 4.3  Can I use LDDS75 in condensation environment? ==
1028	1028
1029		-(((
1030		-(((
1031		-In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LLDS12.
1032		-)))
	1028	+LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1033	1033
1034		-(((
1035		-LLDS12 will output system info once power on as below:
1036		-)))
1037		-)))
1038	1038
1039	1039
1040		- [[image:1654593712276-618.png]]
1041		-
1042		-Valid AT Command please check [[Configure Device>>||anchor="H4.A0ConfigureLLDS12viaATCommandorLoRaWANDownlink"]].
1043		-
1044		-
1045		-= 4.  FAQ =
1046		-
1047		-== 4.1  How to change the LoRa Frequency Bands/Region ==
1048		-
1049		-You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1050		-When downloading the images, choose the required image file for download. ​
1051		-
1052		-
1053	1053	= 5.  Trouble Shooting =
1054	1054
1055		-== 5.1  AT Commands input doesn’t work ==
	1034	+== 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
1056	1056
1057	1057
1058	1058	(((
1059		-In the case if user can see the console output but can’t type input to the device. Please check if you already include the (% style="color:green" %)**ENTER**(%%) while sending out the command. Some serial tool doesn’t send (% style="color:green" %)**ENTER**(%%) while press the send key, user need to add ENTER in their string.
	1038	+
1060	1060	)))
1061	1061
1062	1062
1063		-== 5.2  Significant error between the output distant value of LiDAR and actual distance ==
	1042	+== 5.2  AT Command input doesn't work ==
1064	1064
	1044	+In the case if user can see the console output but can’t type input to the device. Please check if you already include the (% style="color:green" %)**ENTER**(%%) while sending out the command. Some serial tool doesn’t send (% style="color:green" %)**ENTER**(%%) while press the send key, user need to add ENTER in their string.
1065	1065
1066	1066	(((
1067		-(% style="color:blue" %)**Cause ①**(%%)**：**Due to the physical principles of The LiDAR probe, the above phenomenon is likely to occur if the detection object is the material with high reflectivity (such as mirror, smooth floor tile, etc.) or transparent substance (such as glass and water, etc.)
1068		-)))
1069		-
1070		-(((
1071		-Troubleshooting: Please avoid use of this product under such circumstance in practice.
1072		-)))
1073		-
1074		-(((
1075	1075
1076	1076	)))
1077	1077
1078		-(((
1079		-(% style="color:blue" %)**Cause ②**(%%)**: **The IR-pass filters are blocked.
1080		-)))
1081	1081
1082		-(((
1083		-Troubleshooting: please use dry dust-free cloth to gently remove the foreign matter.
1084		-)))
1085	1085
1086		-
1087		-
1088	1088	= 6.  Order Info =
1089	1089
1090	1090

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	1	+XWiki.Xiaoling

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