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Author

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1		-XWiki.Edwin
	1	+XWiki.ting

Content

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	8	+
7	7	= 1.  OverView =
8	8
9	9
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35	35
36	36	**End node actually value when TXP=0 and DR=0**
37	37
38		-(% border="1.5" cellspacing="4" style="background-color:#ffffcc; color:black; width:1002px" %)
39		-|(% style="width:134px" %)**Frequency band**|(% style="width:400px" %)**Output Power in LoRa Module (consider 2dB antenna)**|(% style="width:362px" %)(((
	40	+(% border="1.5" cellspacing="4" style="background-color:#f2f2f2; width:1002px" %)
	41	+|(% style="background-color:#d9e2f3; width:134px" %)**Frequency band**|(% style="background-color:#d9e2f3; width:400px" %)**Output Power in LoRa Module (consider 2dB antenna)**|(% style="background-color:#d9e2f3; width:362px" %)(((
40	40	**Spreading Factor(Higher SF can transmit further)**
41		-)))|(% style="width:102px" %)**Band Width**
	43	+)))|(% style="background-color:#d9e2f3; width:102px" %)**Band Width**
42	42	|(% style="width:134px" %)**EU868**|(% style="width:400px" %)14dBm|(% style="width:362px" %)SF=12|(% style="width:102px" %)125Khz
43	43	|(% style="width:134px" %)**US915**|(% style="width:400px" %)20 or 22 dBm (depends on max output of module)|(% style="width:362px" %)SF=10|(% style="width:102px" %)125Khz
44	44	|(% style="width:134px" %)**AS923**|(% style="width:400px" %)14dBm|(% style="width:362px" %)SF=12|(% style="width:102px" %)125Khz
45	45
46		-
47	47	== 2.2  Adaptive Data Rate (ADR) and set max distance ==
48	48
49	49
50		-**ADR** is the feature that Server will ask End Node to adjust the TXP and DR according to some rules in the server. This is for the purpose of Network Management and Optimize End Node battery life-time.
	51	+(% style="color:#037691" %)**ADR**(%%) is the feature that Server will ask End Node to adjust the TXP and DR according to some rules in the server. This is for the purpose of Network Management and Optimize End Node battery life-time.
51	51
52	52
53	53	By default, ADR is turn on((% style="color:#037691" %)**AT+ADR=1**) (%%)so End node ADR feature is enable.
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57	57
58	58	(% style="color:#037691" %)**AT+ADR=0**
59	59
60		-(% style="color:#037691" %)**AT+DR=0**
	61	+(% style="color:#037691" %)**AT+DR=0     **~/~/(%%) Use longest distance modulation
61	61
62		-(% style="color:#037691" %)**AT+TXP=0**
	63	+(% style="color:#037691" %)**AT+TXP=0   **(%%)~/~/ Use max power   For EU868, max power can be is AT+TXP=50
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65	65	This can be downlink via the LoRaWAN downlink command, see [[this link>>url:http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H8.2UseDownlinkCommandtosetafixuplinkDR]] for reference.
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82	82
83	83	Below are the settings for longest distance transmission. ( will reduce battery life)
84	84
85		-* (% style="color:#037691" %)**AT+ADR=0**     (%%)~/~/  Disable ADR
86		-* (% style="color:#037691" %)**AT+DR=  0**     (%%)~/~/  Use the smallest DR
87		-* (% style="color:#037691" %)**AT+TXP=0**    (%%) ~/~/  Use max power.
	86	+* (% style="color:#037691" %)**AT+ADR=0**          (%%)~/~/  Disable ADR  (% style="color:#037691" %)**(downlinkpayload: 2200FFFF)**
	87	+* (% style="color:#037691" %)**AT+DR=0**         (%%)~/~/  Use the smallest DR,the longest distance modulation (% style="color:#037691" %)**(downlinkpayload: 220000FF)**
	88	+* (% style="color:#037691" %)**AT+TXP=0**      (%%)~/~/  Use max power   For EU868, max power can be is AT+TXP=50 (% style="color:#037691" %)** (downlinkpayload: 22000000)**
88	88
	90	+== 2.5 Debug in Software ==
89	89
	92	+Dragino can help client to debug the software for the distance issue. In the case , please send us below info:
	93	+
	94	+* Detail packets include for Join Request, Join Accept, Uplink & Downlink, These packets should include:
	95	+** RSSI, DataRate, FCNT, Frequency.
	96	+** MIC command detail & Payload detail.
	97	+
90	90	= 3.  Analyze at the hardware side =
91	91
92		-== 3.1  Check if the antenna path is good ~-~- For LSn50v2 series end node ==
	100	+== 3.1  Check if the antenna path is good ~-~- For LSN50v2 series end node ==
93	93
94	94
95	95	a) Open Enclosure and Check if the antenna connection to module is good.
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121	121	* High ISM band usage by other technologies.
122	122	* Radio communication are usually killed with bad topographic conditions. It is usually not possible to communicate through a hill, even very small.
123	123
124		-
125	125	== 4.2  Improve the Antenna ==
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127	127
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169	169
170	170	= 6. Use a repeater =
171	171
	179	+
172	172	In some cases, user can consider use a repeater for limitation transmition.
173	173
174	174	See here for how to set up: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20All%20Gateway%20models/LoRaWAN%20IoT%20Kit%20v3%20User%20Manual/#H7.Example6:LimitedLoRaWANrelay >>http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20All%20Gateway%20models/LoRaWAN%20IoT%20Kit%20v3%20User%20Manual/#H7.Example6:LimitedLoRaWANrelay]]