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Last modified by Xiaoling on 2025/05/05 08:51
From version 101.1
edited by Bei Jinggeng
on 2025/04/29 13:57
Change comment: There is no comment for this version
To version 102.1
edited by Xiaoling
on 2025/05/05 08:51
Change comment: There is no comment for this version

Summary

Details

Page properties
Author
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1 -XWiki.Bei
1 +XWiki.Xiaoling
Content
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63 63  
64 64  The data for the end device set in server
65 65  
66 -
67 67  [[image:image-20240129142631-4.png||height="637" width="1256"]]
68 68  
69 69  Check if OTAA Keys match the keys in device.
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168 168  == **1. Signal problem** ==
169 169  
170 170  
171 -1)  (% style="color:blue" %)**ADR automatic adjustment** (%%)
170 +(% style="color:blue" %)**1)**(%%)  (% style="color:blue" %)**ADR automatic adjustment** (%%)
172 172  
173 -Reason:
172 +**Reason:**
174 174  
175 175  When the signal is at a critical value, the server may configure the node to adjust to a lower power DR.
176 176  At this time, the server is at risk of losing uplink.
177 177  
178 178  
179 -Solution:
178 +**Solution:**
180 180  
181 181  Users can manually fix the DR value.
182 182  
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210 210  (% style="display:none" %) (%%)
211 211  
212 212  
213 -2)  (% style="color:blue" %)**Node antenna problem**
212 +(% style="color:blue" %)**2)**(%%)  (% style="color:blue" %)**Node antenna problem**
214 214  
215 -Reason:
214 +**Reason:**
216 216  
217 217  Node antenna is loose
218 218  
219 219  
220 -Solution:
219 +**Solution:**
221 221  
222 222  Please check whether the antenna interface and module interface are detached
223 223  
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225 225  
226 226  
227 227  
228 -3) (% style="color:blue" %)**Gateway antenna problem**
227 +(% style="color:blue" %)**3) **(%%) (% style="color:blue" %)**Gateway antenna problem**
229 229  
230 -Reason:
229 +**Reason:**
231 231  Gateway uses antenna with wrong frequency band
232 232  
233 233  For example: 868-band gateway uses antenna with 915-band, which will cause the signal to be greatly reduced
234 234  
235 235  
236 -Solution:
235 +**Solution:**
237 237  
238 238  Please check whether the silk screen on the antenna conflicts with the frequency you set.
239 239  
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240 240  [[image:image-20250429115124-2.png]][[image:image-20250429115159-3.png||height="550" width="224"]]
241 241  
242 242  
243 -4) (% style="color:blue" %)**Gateway module problem**
242 +(% style="color:blue" %)**4) **(%%) (% style="color:blue" %)**Gateway module problem**
244 244  
245 -Reason:
244 +**Reason:**
246 246  
247 247  Gateway uses module with wrong frequency band
248 248  For example: 868-band gateway uses module with 915-band, which will cause the signal to be greatly reduced
249 249  
250 250  
251 -Solution:
250 +**Solution:**
252 252  
253 253  Please check whether the silkscreen of the module conflicts with the frequency you set.
254 254  
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257 257  
258 258  == **2. Frequency point problem** ==
259 259  
260 -Reason:
261 261  
260 +**Reason:**
261 +
262 262  There are multiple frequency configurations in AS923/US915/AU915/CN470.
263 263  
264 264  The frequency point of the gateway or server is wrong or missing.
265 265  
266 266  
267 -Solution:
267 +**Solution:**
268 268  
269 269  Users need to check whether the server or gateway configuration is missing or has an incorrect frequency.
270 270  
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273 273  
274 274  == **3. Frequency band problem** ==
275 275  
276 -Reason:
277 277  
277 +**Reason:**
278 +
278 278  When there are multiple gateways, the node cannot lock the frequency band.
279 279  
280 280  
281 -Solution:
282 +**Solution:**
282 282  
283 283  (((
284 284  By default, the frequency bands US915, AU915, CN470 work in 72 frequencies. Many gateways are 8 channel gateways, and in this case, the OTAA join time and uplink schedule is long and unpredictable while the end node is hopping in 72 frequencies.
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570 570  [[image:image-20240129170603-7.png||height="697" width="545"]][[image:image-20240129163741-3.png||height="694" width="565"]]
571 571  
572 572  
573 -
574 574  **Configuration: **
575 575  
576 576  [[image:image-20240129164219-4.png||height="612" width="440"]]
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587 587  [[image:image-20240129170137-6.png||height="459" width="1116"]]
588 588  
589 589  
590 -
591 591  (% style="color:blue" %)**3. Decode the info in CMD(Command prompt window)**
592 592  
593 593  LoRa packet Base64 format:  QP~/~/~/~/+AFQACZv8Hjmc8gFTAkhMzU+75 **(from LPS8-v2)**
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611 611  
612 612  **Step3: Parse the gateway raw payload.(./node_modules/.bin/lora-packet-decode ~-~-base64 QP~/~/~/~/+AFQACZv8Hjmc8gFTAkhMzU+75)**
613 613  
614 -
615 -
616 -
617 617  [[image:image-20240129192908-24.png||height="477" width="907"]]
618 618  
619 -
620 620  [[image:image-20240129192954-25.png||height="485" width="916"]]
621 621  
622 622  
623 -
624 -
625 -
626 -
627 -
628 628  = 9. Why I see uplink 0x00 periodically on the LHT65 v1.8 firmware =
629 629  
630 630