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...	...	@@ -3,7 +3,6 @@
3	3
4	4	**Contents:**
5	5
6		-{{toc/}}
7	7
8	8
9	9
...	...	@@ -11,7 +11,6 @@
11	11
12	12
13	13
14		-
15	15	= 1.  Introduction =
16	16
17	17	== 1.1 ​ What is LoRaWAN Distance Detection Sensor ==
...	...	@@ -35,7 +35,7 @@
35	35	Each LDDS75 pre-loads with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect if there is network coverage, after power on.
36	36
37	37
38		-(% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
	36	+(% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors
39	39	)))
40	40	)))
41	41
...	...	@@ -59,6 +59,8 @@
59	59	* IP66 Waterproof Enclosure
60	60	* 4000mAh or 8500mAh Battery for long term use
61	61
	60	+
	61	+
62	62	== 1.3  Specification ==
63	63
64	64	=== 1.3.1  Rated environmental conditions ===
...	...	@@ -80,7 +80,6 @@
80	80	[[image:1654852253176-749.png]]
81	81
82	82
83		-
84	84	**(2)** **The object to be tested is a "corrugated cardboard box" perpendicular to the central axis of 0 °, and the length * width is 60cm * 50cm.**
85	85
86	86
...	...	@@ -100,6 +100,8 @@
100	100	* Sewer
101	101	* Bottom water level monitoring
102	102
	102	+
	103	+
103	103	== 1.6  Pin mapping and power on ==
104	104
105	105
...	...	@@ -208,12 +208,12 @@
208	208	**Size (bytes)**
209	209	)))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
210	210	|(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
211		-[[Distance>>||anchor="H2.3.2A0Distance"]]
	212	+[[Distance>>||anchor="H2.3.3A0Distance"]]
212	212
213	213	(unit: mm)
214		-)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
215		-[[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
216		-)))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
	215	+)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.4A0Distancesignalstrength"]]|(((
	216	+[[Temperature (Optional )>>||anchor="H2.3.5A0InterruptPin"]]
	217	+)))|[[Sensor Flag>>path:#Sensor_Flag]]
217	217
218	218	[[image:1654850511545-399.png]]
219	219
...	...	@@ -241,9 +241,10 @@
241	241	* If the sensor value lower than 0x0118 (280mm), the sensor value will be invalid. Since v1.1.4, all value lower than 280mm will be set to 0x0014(20mm) which means the value is invalid.
242	242
243	243
	245	+
244	244	=== 2.3.3  Interrupt Pin ===
245	245
246		-This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.3A0SetInterruptMode"]] for the hardware and software set up.
	248	+This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H4.2A0SetInterruptMode"]] for the hardware and software set up.
247	247
248	248	**Example:**
249	249
...	...	@@ -274,9 +274,9 @@
274	274	0x00: No Ultrasonic Sensor
275	275
276	276
	279	+===
	280	+(% style="color:inherit; font-family:inherit" %)2.3.6  Decode payload in The Things Network(%%) ===
277	277
278		-=== 2.3.6  Decode payload in The Things Network ===
279		-
280	280	While using TTN network, you can add the payload format to decode the payload.
281	281
282	282
...	...	@@ -811,6 +811,7 @@
811	811	* Blink once when device transmit a packet.
812	812
813	813
	816	+
814	814	== 2.8  ​Firmware Change Log ==
815	815
816	816
...	...	@@ -826,13 +826,11 @@
826	826
827	827	[[image:image-20220610172003-1.png]]
828	828
829		-
830	830	[[image:image-20220610172003-2.png]]
831	831
832	832
	835	+== 2.10  Battery Analysis  ==
833	833
834		-== 2.10  Battery Analysis ==
835		-
836	836	=== 2.10.1  Battery Type ===
837	837
838	838	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.
...	...	@@ -841,7 +841,7 @@
841	841	The battery related documents as below:
842	842
843	843	* (((
844		-[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
	845	+[[ Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
845	845	)))
846	846	* (((
847	847	[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
...	...	@@ -856,31 +856,84 @@
856	856
857	857	=== 2.10.2  Replace the battery ===
858	858
	860	+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.
	861	+
	862	+
	863	+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)
	864	+
	865	+
	866	+
	867	+= 3.  LiDAR ToF Measurement =
	868	+
	869	+== 3.1 Principle of Distance Measurement ==
	870	+
	871	+The LiDAR probe is based on TOF, namely, Time of Flight principle. To be specific, the product emits modulation wave of near infrared ray on a periodic basis, which will be reflected after contacting object. The product obtains the time of flight by measuring round-trip phase difference and then calculates relative range between the product and the detection object, as shown below.
	872	+
	873	+[[image:1654831757579-263.png]]
	874	+
	875	+
	876	+
	877	+== 3.2 Distance Measurement Characteristics ==
	878	+
	879	+With optimization of light path and algorithm, The LiDAR probe has minimized influence from external environment on distance measurement performance. Despite that, the range of distance measurement may still be affected by the environment illumination intensity and the reflectivity of detection object. As shown in below:
	880	+
	881	+[[image:1654831774373-275.png]]
	882	+
	883	+
859	859	(((
860		-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.
	885	+(% style="color:blue" %)**① **(%%)Represents the detection blind zone of The LiDAR probe, 0-10cm, within which the output data is unreliable.
861	861	)))
862	862
863	863	(((
864		-
	889	+(% style="color:blue" %)**② **(%%)Represents the operating range of The LiDAR probe detecting black target with 10% reflectivity, 0.1-5m.
865	865	)))
866	866
867	867	(((
868		-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)
	893	+(% style="color:blue" %)**③ **(%%)Represents the operating range of The LiDAR probe detecting white target with 90% reflectivity, 0.1-12m.
869	869	)))
870	870
871	871
	897	+(((
	898	+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:
	899	+)))
872	872
873		-= 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
874	874
	902	+[[image:1654831797521-720.png]]
	903	+
	904	+
875	875	(((
	906	+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.
	907	+)))
	908	+
	909	+[[image:1654831810009-716.png]]
	910	+
	911	+
876	876	(((
877		-Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
	913	+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.
878	878	)))
	915	+
	916	+
	917	+
	918	+== 3.3 Notice of usage: ==
	919	+
	920	+Possible invalid /wrong reading for LiDAR ToF tech:
	921	+
	922	+* Measure high reflectivity object such as: Mirror, Smooth ceramic tile, static milk surface, will have possible wrong readings.
	923	+* While there is transparent object such as glass, water drop between the measured object and the LiDAR sensor, the reading might wrong.
	924	+* The LiDAR probe is cover by dirty things; the reading might be wrong. In this case, need to clean the probe.
	925	+* The sensor window is made by Acrylic. Don’t touch it with alcohol material. This will destroy the sensor window.
	926	+
	927	+= 4.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
	928	+
	929	+(((
	930	+(((
	931	+Use can configure LLDS12 via AT Command or LoRaWAN Downlink.
879	879	)))
	933	+)))
880	880
881	881	* (((
882	882	(((
883		-AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
	937	+AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
884	884	)))
885	885	)))
886	886	* (((
...	...	@@ -895,7 +895,7 @@
895	895	)))
896	896
897	897	(((
898		-There are two kinds of commands to configure LDDS75, they are:
	952	+There are two kinds of commands to configure LLDS12, they are:
899	899	)))
900	900	)))
901	901
...	...	@@ -936,152 +936,351 @@
936	936
937	937	* (((
938	938	(((
939		-(% style="color:#4f81bd" %)** Commands special design for LDDS75**
	993	+(% style="color:#4f81bd" %)** Commands special design for LLDS12**
940	940	)))
941	941	)))
942	942
943	943	(((
944	944	(((
945		-These commands only valid for LDDS75, as below:
	999	+These commands only valid for LLDS12, as below:
946	946	)))
947	947	)))
948	948
949	949
950	950
951		-== 3.1  Access AT Commands ==
	1005	+== 4.1  Set Transmit Interval Time ==
952	952
953		-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.
	1007	+Feature: Change LoRaWAN End Node Transmit Interval.
954	954
955		-[[image:image-20220610172924-4.png||height="483" width="988"]]
	1009	+(% style="color:#037691" %)**AT Command: AT+TDC**
956	956
	1011	+[[image:image-20220607171554-8.png]]
957	957
958		-Or if you have below board, use below connection:
959	959
	1014	+(((
	1015	+(% style="color:#037691" %)**Downlink Command: 0x01**
	1016	+)))
960	960
961		-[[image:image-20220610172924-5.png]]
	1018	+(((
	1019	+Format: Command Code (0x01) followed by 3 bytes time value.
	1020	+)))
962	962
	1022	+(((
	1023	+If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
	1024	+)))
963	963
964		-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:
	1026	+* (((
	1027	+Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
	1028	+)))
	1029	+* (((
	1030	+Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
	1031	+)))
965	965
	1033	+== 4.2  Set Interrupt Mode ==
966	966
967		- [[image:image-20220610172924-6.png||height="601" width="860"]]
	1035	+Feature, Set Interrupt mode for GPIO_EXIT.
968	968
	1037	+(% style="color:#037691" %)**AT Command: AT+INTMOD**
969	969
	1039	+[[image:image-20220610105806-2.png]]
970	970
971		-== 3.2  Set Transmit Interval Time ==
972	972
973		-Feature: Change LoRaWAN End Node Transmit Interval.
	1042	+(((
	1043	+(% style="color:#037691" %)**Downlink Command: 0x06**
	1044	+)))
974	974
975		-(% style="color:#037691" %)**AT Command: AT+TDC**
	1046	+(((
	1047	+Format: Command Code (0x06) followed by 3 bytes.
	1048	+)))
976	976
977		-[[image:image-20220610173409-7.png]]
	1050	+(((
	1051	+This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
	1052	+)))
978	978
	1054	+* (((
	1055	+Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
	1056	+)))
	1057	+* (((
	1058	+Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
	1059	+)))
979	979
	1061	+== 4.3  Get Firmware Version Info ==
	1062	+
	1063	+Feature: use downlink to get firmware version.
	1064	+
	1065	+(% style="color:#037691" %)**Downlink Command: 0x26**
	1066	+
	1067	+[[image:image-20220607171917-10.png]]
	1068	+
	1069	+* Reply to the confirmation package: 26 01
	1070	+* Reply to non-confirmed packet: 26 00
	1071	+
	1072	+Device will send an uplink after got this downlink command. With below payload:
	1073	+
	1074	+Configures info payload:
	1075	+
	1076	+(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
	1077	+|=(((
	1078	+**Size(bytes)**
	1079	+)))|=**1**|=**1**|=**1**|=**1**|=**1**|=**5**|=**1**
	1080	+|**Value**|Software Type|(((
	1081	+Frequency
	1082	+
	1083	+Band
	1084	+)))|Sub-band|(((
	1085	+Firmware
	1086	+
	1087	+Version
	1088	+)))|Sensor Type|Reserve|(((
	1089	+[[Message Type>>||anchor="H2.3.7A0MessageType"]]
	1090	+Always 0x02
	1091	+)))
	1092	+
	1093	+**Software Type**: Always 0x03 for LLDS12
	1094	+
	1095	+
	1096	+**Frequency Band**:
	1097	+
	1098	+*0x01: EU868
	1099	+
	1100	+*0x02: US915
	1101	+
	1102	+*0x03: IN865
	1103	+
	1104	+*0x04: AU915
	1105	+
	1106	+*0x05: KZ865
	1107	+
	1108	+*0x06: RU864
	1109	+
	1110	+*0x07: AS923
	1111	+
	1112	+*0x08: AS923-1
	1113	+
	1114	+*0x09: AS923-2
	1115	+
	1116	+*0xa0: AS923-3
	1117	+
	1118	+
	1119	+**Sub-Band**: value 0x00 ~~ 0x08
	1120	+
	1121	+
	1122	+**Firmware Version**: 0x0100, Means: v1.0.0 version
	1123	+
	1124	+
	1125	+**Sensor Type**:
	1126	+
	1127	+0x01: LSE01
	1128	+
	1129	+0x02: LDDS75
	1130	+
	1131	+0x03: LDDS20
	1132	+
	1133	+0x04: LLMS01
	1134	+
	1135	+0x05: LSPH01
	1136	+
	1137	+0x06: LSNPK01
	1138	+
	1139	+0x07: LLDS12
	1140	+
	1141	+
	1142	+
	1143	+= 5.  Battery & How to replace =
	1144	+
	1145	+== 5.1  Battery Type ==
	1146	+
980	980	(((
981		-(% style="color:#037691" %)**Downlink Command: 0x01**
	1148	+LLDS12 is equipped with a [[8500mAH ER26500 Li-SOCI2 battery>>url:https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]. The battery is un-rechargeable battery with low discharge rate targeting for 8~~10 years use. This type of battery is commonly used in IoT target for long-term running, such as water meter.
982	982	)))
983	983
984	984	(((
	1152	+The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
	1153	+)))
	1154	+
	1155	+[[image:1654593587246-335.png]]
	1156	+
	1157	+
	1158	+Minimum Working Voltage for the LLDS12:
	1159	+
	1160	+LLDS12:  2.45v ~~ 3.6v
	1161	+
	1162	+
	1163	+
	1164	+== 5.2  Replace Battery ==
	1165	+
985	985	(((
986		-Format: Command Code (0x01) followed by 3 bytes time value.
	1167	+Any battery with range 2.45 ~~ 3.6v can be a replacement. We recommend to use Li-SOCl2 Battery.
	1168	+)))
987	987
988		-If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
	1170	+(((
	1171	+And make sure the positive and negative pins match.
	1172	+)))
989	989
990		-* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
991		-* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
	1174	+
	1175	+
	1176	+== 5.3  Power Consumption Analyze ==
	1177	+
	1178	+(((
	1179	+Dragino Battery powered product are all runs in Low Power mode. We have an update battery calculator which base on the measurement of the real device. User can use this calculator to check the battery life and calculate the battery life if want to use different transmit interval.
992	992	)))
993	993
	1182	+(((
	1183	+Instruction to use as below:
	1184	+)))
994	994
995		-
	1186	+
	1187	+**Step 1**: Downlink the up-to-date DRAGINO_Battery_Life_Prediction_Table.xlsx from:
	1188	+
	1189	+[[https:~~/~~/www.dragino.com/downloads/index.pHp?dir=LoRa_End_Node/Battery_Analyze/>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/Battery_Analyze/]]
	1190	+
	1191	+
	1192	+**Step 2**: Open it and choose
	1193	+
	1194	+* Product Model
	1195	+* Uplink Interval
	1196	+* Working Mode
	1197	+
	1198	+And the Life expectation in difference case will be shown on the right.
	1199	+
	1200	+[[image:1654593605679-189.png]]
	1201	+
	1202	+
	1203	+The battery related documents as below:
	1204	+
	1205	+* (((
	1206	+[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
996	996	)))
	1208	+* (((
	1209	+[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
	1210	+)))
	1211	+* (((
	1212	+[[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]]
	1213	+)))
997	997
998		-== 3.3  Set Interrupt Mode ==
	1215	+[[image:image-20220607172042-11.png]]
999	999
1000		-Feature, Set Interrupt mode for GPIO_EXIT.
1001	1001
1002		-(% style="color:#037691" %)**Downlink Command: AT+INTMOD**
1003	1003
1004		-[[image:image-20220610174917-9.png]]
	1219	+=== 5.3.1  ​Battery Note ===
1005	1005
	1221	+(((
	1222	+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 transmit LoRa, then the battery life may be decreased.
	1223	+)))
1006	1006
1007		-(% style="color:#037691" %)**Downlink Command: 0x06**
1008	1008
1009		-Format: Command Code (0x06) followed by 3 bytes.
1010	1010
1011		-This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
	1227	+=== ​5.3.2  Replace the battery ===
1012	1012
1013		-* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1014		-* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
	1229	+(((
	1230	+You can change the battery in the LLDS12.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.
	1231	+)))
1015	1015
	1233	+(((
	1234	+The default battery pack of LLDS12 includes a ER26500 plus super capacitor. If user can’t find this pack locally, they can find ER26500 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)
	1235	+)))
1016	1016
1017	1017
1018		-= 4.  FAQ =
1019	1019
1020		-== 4.1  What is the frequency plan for LDDS75? ==
	1239	+= 6.  Use AT Command =
1021	1021
1022		-LDDS75 use the same frequency as other Dragino products. User can see the detail from this link:  [[Introduction>>doc:Main.End Device Frequency Band.WebHome||anchor="H1.Introduction"]]
	1241	+== 6.1  Access AT Commands ==
1023	1023
	1243	+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.
1024	1024
	1245	+[[image:1654593668970-604.png]]
1025	1025
1026		-== 4.2  How to change the LoRa Frequency Bands/Region ==
	1247	+**Connection:**
1027	1027
1028		-You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1029		-When downloading the images, choose the required image file for download. ​
	1249	+(% style="background-color:yellow" %)** USB TTL GND <~-~-~-~-> GND**
1030	1030
	1251	+(% style="background-color:yellow" %)** USB TTL TXD  <~-~-~-~-> UART_RXD**
1031	1031
	1253	+(% style="background-color:yellow" %)** USB TTL RXD  <~-~-~-~-> UART_TXD**
1032	1032
1033		-== 4.3  Can I use LDDS75 in condensation environment? ==
1034	1034
1035		-LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
	1256	+(((
	1257	+(((
	1258	+In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LLDS12.
	1259	+)))
1036	1036
	1261	+(((
	1262	+LLDS12 will output system info once power on as below:
	1263	+)))
	1264	+)))
1037	1037
1038	1038
1039		-= 5.  Trouble Shooting =
	1267	+ [[image:1654593712276-618.png]]
1040	1040
1041		-== 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
	1269	+Valid AT Command please check [[Configure Device>>||anchor="H4.A0ConfigureLLDS12viaATCommandorLoRaWANDownlink"]].
1042	1042
1043		-It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1044	1044
	1272	+= 7.  FAQ =
1045	1045
1046		-== 5.2  AT Command input doesn't work ==
	1274	+== 7.1  How to change the LoRa Frequency Bands/Region ==
1047	1047
	1276	+You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
	1277	+When downloading the images, choose the required image file for download. ​
	1278	+
	1279	+
	1280	+= 8.  Trouble Shooting =
	1281	+
	1282	+== 8.1  AT Commands input doesn’t work ==
	1283	+
	1284	+
	1285	+(((
1048	1048	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.
	1287	+)))
1049	1049
	1289	+
	1290	+== 8.2  Significant error between the output distant value of LiDAR and actual distance ==
	1291	+
	1292	+
1050	1050	(((
1051		-
	1294	+(% 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.)
1052	1052	)))
1053	1053
	1297	+(((
	1298	+Troubleshooting: Please avoid use of this product under such circumstance in practice.
	1299	+)))
1054	1054
1055		-= 6.  Order Info =
	1301	+(((
	1302	+
	1303	+)))
1056	1056
	1305	+(((
	1306	+(% style="color:blue" %)**Cause ②**(%%)**: **The IR-pass filters are blocked.
	1307	+)))
1057	1057
1058		-Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
	1309	+(((
	1310	+Troubleshooting: please use dry dust-free cloth to gently remove the foreign matter.
	1311	+)))
1059	1059
1060	1060
1061		-(% style="color:blue" %)**XX**(%%)**: **The default frequency band
1062	1062
1063		-* (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1064		-* (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1065		-* (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1066		-* (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1067		-* (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1068		-* (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1069		-* (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1070		-* (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
	1315	+= 9.  Order Info =
1071	1071
1072		-(% style="color:blue" %)**YY**(%%): Battery Option
1073	1073
1074		-* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1075		-* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
	1318	+Part Number: (% style="color:blue" %)**LLDS12-XX**
1076	1076
1077	1077
	1321	+(% style="color:blue" %)**XX**(%%): The default frequency band
1078	1078
1079		-= 7. ​ Packing Info =
	1323	+* (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
	1324	+* (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
	1325	+* (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
	1326	+* (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
	1327	+* (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
	1328	+* (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
	1329	+* (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
	1330	+* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1080	1080
	1332	+= 10. ​ Packing Info =
1081	1081
	1334	+
1082	1082	**Package Includes**:
1083	1083
1084		-* LDDS75 LoRaWAN Distance Detection Sensor x 1
	1337	+* LLDS12 LoRaWAN LiDAR Distance Sensor x 1
1085	1085
1086	1086	**Dimension and weight**:
1087	1087
...	...	@@ -1090,9 +1090,7 @@
1090	1090	* Package Size / pcs : cm
1091	1091	* Weight / pcs : g
1092	1092
	1346	+= 11.  ​Support =
1093	1093
1094		-
1095		-= 8.  ​Support =
1096		-
1097	1097	* Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
1098	1098	* Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:http://../../../../../../D:%5C%E5%B8%82%E5%9C%BA%E8%B5%84%E6%96%99%5C%E8%AF%B4%E6%98%8E%E4%B9%A6%5CLoRa%5CLT%E7%B3%BB%E5%88%97%5Csupport@dragino.com]].

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