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831	831	[[image:1654831774373-275.png]]
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834	834	(% style="color:blue" %)**① **(%%)Represents the detection blind zone of The LiDAR probe, 0-10cm, within which the output data is unreliable.
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836	836	(% style="color:blue" %)**② **(%%)Represents the operating range of The LiDAR probe detecting black target with 10% reflectivity, 0.1-5m.
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838	838	(% style="color:blue" %)**③ **(%%)Represents the operating range of The LiDAR probe detecting white target with 90% reflectivity, 0.1-12m.
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841	841	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:
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844	844	[[image:1654831797521-720.png]]
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847	847	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.
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849	849	[[image:1654831810009-716.png]]
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852	852	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.
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867	867	= 4.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
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870	870	Use can configure LLDS12 via AT Command or LoRaWAN Downlink.
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873	873	* (((
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874	874	AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
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876	876	* (((
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877	877	LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
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883	883	There are two kinds of commands to configure LLDS12, they are:
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886	886	* (((
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887	887	(% style="color:#4f81bd" %)** General Commands**.
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891	891	These commands are to configure:
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894	894	* (((
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895	895	General system settings like: uplink interval.
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897	897	* (((
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898	898	LoRaWAN protocol & radio related command.
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902	902	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]]
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909	909	* (((
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910	910	(% style="color:#4f81bd" %)** Commands special design for LLDS12**
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914	914	These commands only valid for LLDS12, as below:
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