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831	831	[[image:1654831774373-275.png]]
832	832
833	833
834		-(((
835	835	(% style="color:blue" %)**① **(%%)Represents the detection blind zone of The LiDAR probe, 0-10cm, within which the output data is unreliable.
836		-)))
837	837
838		-(((
839	839	(% style="color:blue" %)**② **(%%)Represents the operating range of The LiDAR probe detecting black target with 10% reflectivity, 0.1-5m.
840		-)))
841	841
842		-(((
843	843	(% style="color:blue" %)**③ **(%%)Represents the operating range of The LiDAR probe detecting white target with 90% reflectivity, 0.1-12m.
844		-)))
845	845
846	846
847		-(((
848	848	Vertical Coordinates: Represents the radius of light spot for The LiDAR probe at the different distances. The diameter of light spot depends on the FOV of The LiDAR probe (the term of FOV generally refers to the smaller value between the receiving angle and the transmitting angle), which is calculated as follows:
849		-)))
850	850
851	851
852	852	[[image:1654831797521-720.png]]
853	853
854	854
855		-(((
856	856	In the formula above, d is the diameter of light spot; D is detecting range; β is the value of the receiving angle of The LiDAR probe, 3.6°. Correspondence between the diameter of light spot and detecting range is given in Table below.
857		-)))
858	858
859	859	[[image:1654831810009-716.png]]
860	860
861	861
862		-(((
863	863	If the light spot reaches two objects with different distances, as shown in Figure 3, the output distance value will be a value between the actual distance values of the two objects. For a high accuracy requirement in practice, the above situation should be noticed to avoid the measurement error.
864		-)))
865	865
866	866
867	867
...	...	@@ -876,82 +876,55 @@
876	876
877	877
878	878
879		-
880	880	= 4.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
881	881
882	882	(((
883		-(((
884	884	Use can configure LLDS12 via AT Command or LoRaWAN Downlink.
885	885	)))
886		-)))
887	887
888	888	* (((
889		-(((
890	890	AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
891	891	)))
892		-)))
893	893	* (((
894		-(((
895	895	LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
896	896	)))
897		-)))
898	898
899	899	(((
900		-(((
901	901
902		-)))
903	903
904		-(((
905	905	There are two kinds of commands to configure LLDS12, they are:
906	906	)))
907		-)))
908	908
909	909	* (((
910		-(((
911	911	(% style="color:#4f81bd" %)** General Commands**.
912	912	)))
913		-)))
914	914
915	915	(((
916		-(((
917	917	These commands are to configure:
918	918	)))
919		-)))
920	920
921	921	* (((
922		-(((
923	923	General system settings like: uplink interval.
924	924	)))
925		-)))
926	926	* (((
927		-(((
928	928	LoRaWAN protocol & radio related command.
929	929	)))
930		-)))
931	931
932	932	(((
933		-(((
934	934	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]]
935	935	)))
936		-)))
937	937
938	938	(((
939		-(((
940	940
941	941	)))
942		-)))
943	943
944	944	* (((
945		-(((
946	946	(% style="color:#4f81bd" %)** Commands special design for LLDS12**
947	947	)))
948		-)))
949	949
950	950	(((
951		-(((
952	952	These commands only valid for LLDS12, as below:
953	953	)))
954		-)))
955	955
956	956
957	957
...	...	@@ -964,6 +964,7 @@
964	964	[[image:image-20220607171554-8.png]]
965	965
966	966
	928	+
967	967	(((
968	968	(% style="color:#037691" %)**Downlink Command: 0x01**
969	969	)))
...	...	@@ -981,6 +981,9 @@
981	981	)))
982	982	* (((
983	983	Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
	946	+
	947	+
	948	+
984	984	)))
985	985
986	986	== 4.2  Set Interrupt Mode ==
...	...	@@ -1207,14 +1207,10 @@
1207	1207
1208	1208
1209	1209	(((
1210		-(((
1211	1211	In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LLDS12.
1212		-)))
1213	1213
1214		-(((
1215	1215	LLDS12 will output system info once power on as below:
1216	1216	)))
1217		-)))
1218	1218
1219	1219
1220	1220	[[image:1654593712276-618.png]]
...	...	@@ -1235,9 +1235,7 @@
1235	1235	== 8.1  AT Commands input doesn’t work ==
1236	1236
1237	1237
1238		-(((
1239	1239	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.
1240		-)))
1241	1241
1242	1242
1243	1243	== 8.2  Significant error between the output distant value of LiDAR and actual distance ==