<
From version < 23.3 >
edited by Xiaoling
on 2024/08/16 11:22
To version < 23.2 >
edited by Xiaoling
on 2024/08/16 11:17
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... ... @@ -37,14 +37,15 @@
37 37  
38 38  **End node actually value when TXP=0 and DR=0**
39 39  
40 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:1002px" %)
41 -|(% style="background-color:#4F81BD;color:white; width:134px" %)**Frequency band**|(% style="background-color:#4F81BD;color:white; width:400px" %)**Output Power in LoRa Module (consider 2dB antenna)**|(% style="background-color:#4F81BD;color:white; width:362px" %)(((
40 +(% border="1.5" cellspacing="3" style="background-color:#f2f2f2; width:1002px" %)
41 +|(% style="background-color:#D9E2F3;color:#0070C0; width:134px" %)**Frequency band**|(% style="background-color:#D9E2F3;color:#0070C0; width:400px" %)**Output Power in LoRa Module (consider 2dB antenna)**|(% style="background-color:#D9E2F3;color:#0070C0; width:362px" %)(((
42 42  **Spreading Factor(Higher SF can transmit further)**
43 -)))|(% style="background-color:#4F81BD;color:white; width:102px" %)**Band Width**
43 +)))|(% style="background-color:#D9E2F3;color:#0070C0; 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  
... ... @@ -71,8 +71,10 @@
71 71  
72 72  According to the above technology, if we have a problem on the distance, we can first check if the end node is trying to longest distance modulation already. We can see that from the LoRaWAN server. Below is an example from Chirpstack.
73 73  
75 +
74 74  We can see the traffic in gateway's page and know that the distance is SF12 / BW125. (note, server is not able to know Transmit Power settings from End Node)
75 75  
78 +
76 76  [[image:image-20221006185826-3.png]]
77 77  
78 78  
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