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Author

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1		-XWiki.Xiaoling
	1	+XWiki.Edwin

Content

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46	46	|(% style="width:134px" %)**AS923**|(% style="width:400px" %)14dBm|(% style="width:362px" %)SF=12|(% style="width:102px" %)125Khz
47	47
48	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  **~/~/(%%) Use longest distance modulation
	62	+(% style="color:#037691" %)**AT+DR=0     **~/~/(%%) Use longest distance modulation
64	64
65	65	(% style="color:#037691" %)**AT+TXP=0   **(%%)~/~/ Use max power   For EU868, max power can be is AT+TXP=50
66	66
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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,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
90	90	* (% style="color:#037691" %)**AT+TXP=0**    (%%) ~/~/  Use max power   For EU868, max power can be is AT+TXP=50
91	91
92	92
	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	+
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 ==
	103	+== 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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126	126	* 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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128	128
129		-
130	130	== 4.2  Improve the Antenna ==
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132	132