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Author

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1		-XWiki.Xiaoling
	1	+XWiki.Edwin

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="width:134px;background-color:#D9E2F3" %)**Frequency band**|(% style="width:400px;background-color:#D9E2F3" %)**Output Power in LoRa Module (consider 2dB antenna)**|(% style="width:362px;background-color:#D9E2F3" %)(((
	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" %)(((
42	42	**Spreading Factor(Higher SF can transmit further)**
43		-)))|(% style="width:102px;background-color:#D9E2F3" %)**Band Width**
	43	+)))|(% style="background-color:#d9e2f3; 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	48	== 2.2  Adaptive Data Rate (ADR) and set max distance ==
49	49
50	50
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58	58
59	59	(% style="color:#037691" %)**AT+ADR=0**
60	60
61		-(% style="color:#037691" %)**AT+DR=0  **~/~/(%%) Use longest distance modulation
	62	+(% style="color:#037691" %)**AT+DR=0     **~/~/(%%) Use longest distance modulation
62	62
63		-(% style="color:#037691" %)**AT+TXP=0   **(%%)~/~/Use max power   For EU868, max power can be is AT+TXP=50
	64	+(% style="color:#037691" %)**AT+TXP=0   **(%%)~/~/ Use max power   For EU868, max power can be is AT+TXP=50
64	64
65	65
66	66	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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83	83
84	84	Below are the settings for longest distance transmission. ( will reduce battery life)
85	85
86		-* (% style="color:#037691" %)**AT+ADR=0**     (%%)~/~/  Disable ADR
87		-* (% style="color:#037691" %)**AT+DR=  0**     (%%)~/~/  Use the smallest DR,the longest distance modulation
	87	+* (% style="color:#037691" %)**AT+ADR=0**      (%%)~/~/  Disable ADR
	88	+* (% style="color:#037691" %)**AT+DR=  0**      (%%)~/~/  Use the smallest DR,the longest distance modulation
88	88	* (% style="color:#037691" %)**AT+TXP=0**    (%%) ~/~/  Use max power   For EU868, max power can be is AT+TXP=50
89	89
	91	+
	92	+== 2.5 Debug in Software ==
	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	+
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 ==
	103	+== 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
	135	+
124	124	== 4.2  Improve the Antenna ==
125	125
126	126