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Author

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1		-XWiki.Edwin
	1	+XWiki.Xiaoling

Content

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37	37
38	38	**End node actually value when TXP=0 and DR=0**
39	39
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	+(% border="1.5" cellspacing="4" style="background-color:#ffffcc; color:black; width:1002px" %)
	41	+|(% style="width:134px" %)**Frequency band**|(% style="width:400px" %)**Output Power in LoRa Module (consider 2dB antenna)**|(% style="width:362px" %)(((
42	42	**Spreading Factor(Higher SF can transmit further)**
43		-)))|(% style="background-color:#d9e2f3; width:102px" %)**Band Width**
	43	+)))|(% style="width:102px" %)**Band Width**
44	44	|(% style="width:134px" %)**EU868**|(% style="width:400px" %)14dBm|(% style="width:362px" %)SF=12|(% style="width:102px" %)125Khz
45	45	|(% 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
46	46	|(% style="width:134px" %)**AS923**|(% style="width:400px" %)14dBm|(% style="width:362px" %)SF=12|(% style="width:102px" %)125Khz
47	47
48	48
	49	+
49	49	== 2.2  Adaptive Data Rate (ADR) and set max distance ==
50	50
51	51
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59	59
60	60	(% style="color:#037691" %)**AT+ADR=0**
61	61
62		-(% style="color:#037691" %)**AT+DR=0     **~/~/(%%) Use longest distance modulation
	63	+(% style="color:#037691" %)**AT+DR=0**
63	63
64		-(% style="color:#037691" %)**AT+TXP=0   **(%%)~/~/ Use max power   For EU868, max power can be is AT+TXP=50
	65	+(% style="color:#037691" %)**AT+TXP=0**
65	65
66	66
67	67	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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84	84
85	85	Below are the settings for longest distance transmission. ( will reduce battery life)
86	86
87		-* (% style="color:#037691" %)**AT+ADR=0**      (%%)~/~/  Disable ADR
88		-* (% style="color:#037691" %)**AT+DR=  0**      (%%)~/~/  Use the smallest DR,the longest distance modulation
89		-* (% style="color:#037691" %)**AT+TXP=0**    (%%) ~/~/  Use max power   For EU868, max power can be is AT+TXP=50
	88	+* (% style="color:#037691" %)**AT+ADR=0**     (%%)~/~/  Disable ADR
	89	+* (% style="color:#037691" %)**AT+DR=  0**     (%%)~/~/  Use the smallest DR
	90	+* (% style="color:#037691" %)**AT+TXP=0**    (%%) ~/~/  Use max power
90	90
91	91
92		-== 2.5 Debug in Software ==
93	93
94		-Dragino can help client to debug the software for the distance issue. In the case , please send us below info:
95		-
96		-* Detail packets include for Join Request, Join Accept, Uplink & Downlink, These packets should include:
97		-** RSSI, DataRate, FCNT, Frequency.
98		-** MIC command detail & Payload detail.
99		-
100		-
101	101	= 3.  Analyze at the hardware side =
102	102
103		-== 3.1  Check if the antenna path is good ~-~- For LSN50v2 series end node ==
	96	+== 3.1  Check if the antenna path is good ~-~- For LSn50v2 series end node ==
104	104
105	105
106	106	a) Open Enclosure and Check if the antenna connection to module is good.
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133	133	* Radio communication are usually killed with bad topographic conditions. It is usually not possible to communicate through a hill, even very small.
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135	135
	129	+
136	136	== 4.2  Improve the Antenna ==
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138	138