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1		-XWiki.Xiaoling
	1	+XWiki.ting

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:#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" %)(((
	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" %)**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		-
49		-
50	50	== 2.2  Adaptive Data Rate (ADR) and set max distance ==
51	51
52	52
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60	60
61	61	(% style="color:#037691" %)**AT+ADR=0**
62	62
63		-(% style="color:#037691" %)**AT+DR=0**
	61	+(% style="color:#037691" %)**AT+DR=0     **~/~/(%%) Use longest distance modulation
64	64
65		-(% 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
66	66
67	67
68	68	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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85	85
86	86	Below are the settings for longest distance transmission. ( will reduce battery life)
87	87
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
	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)**
91	91
	90	+== 2.5 Debug in Software ==
92	92
	92	+Dragino can help client to debug the software for the distance issue. In the case , please send us below info:
93	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	+
94	94	= 3.  Analyze at the hardware side =
95	95
96		-== 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 ==
97	97
98	98
99	99	a) Open Enclosure and Check if the antenna connection to module is good.
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125	125	* High ISM band usage by other technologies.
126	126	* Radio communication are usually killed with bad topographic conditions. It is usually not possible to communicate through a hill, even very small.
127	127
128		-
129		-
130	130	== 4.2  Improve the Antenna ==
131	131
132	132