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

Summary

Details

Page properties
Author
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1 -XWiki.Xiaoling
1 +XWiki.Bei
Content
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63 63  
64 64  The data for the end device set in server
65 65  
66 +
66 66  [[image:image-20240129142631-4.png||height="637" width="1256"]]
67 67  
68 68  Check if OTAA Keys match the keys in device.
... ... @@ -167,15 +167,15 @@
167 167  == **1. Signal problem** ==
168 168  
169 169  
170 -(% style="color:blue" %)**1)**(%%)  (% style="color:blue" %)**ADR automatic adjustment** (%%)
171 +1)  (% style="color:blue" %)**ADR automatic adjustment** (%%)
171 171  
172 -**Reason:**
173 +Reason:
173 173  
174 174  When the signal is at a critical value, the server may configure the node to adjust to a lower power DR.
175 175  At this time, the server is at risk of losing uplink.
176 176  
177 177  
178 -**Solution:**
179 +Solution:
179 179  
180 180  Users can manually fix the DR value.
181 181  
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209 209  (% style="display:none" %) (%%)
210 210  
211 211  
212 -(% style="color:blue" %)**2)**(%%)  (% style="color:blue" %)**Node antenna problem**
213 +2)  (% style="color:blue" %)**Node antenna problem**
213 213  
214 -**Reason:**
215 +Reason:
215 215  
216 216  Node antenna is loose
217 217  
218 218  
219 -**Solution:**
220 +Solution:
220 220  
221 221  Please check whether the antenna interface and module interface are detached
222 222  
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224 224  
225 225  
226 226  
227 -(% style="color:blue" %)**3) **(%%) (% style="color:blue" %)**Gateway antenna problem**
228 +3) (% style="color:blue" %)**Gateway antenna problem**
228 228  
229 -**Reason:**
230 +Reason:
230 230  Gateway uses antenna with wrong frequency band
231 231  
232 232  For example: 868-band gateway uses antenna with 915-band, which will cause the signal to be greatly reduced
233 233  
234 234  
235 -**Solution:**
236 +Solution:
236 236  
237 237  Please check whether the silk screen on the antenna conflicts with the frequency you set.
238 238  
... ... @@ -239,15 +239,15 @@
239 239  [[image:image-20250429115124-2.png]][[image:image-20250429115159-3.png||height="550" width="224"]]
240 240  
241 241  
242 -(% style="color:blue" %)**4) **(%%) (% style="color:blue" %)**Gateway module problem**
243 +4) (% style="color:blue" %)**Gateway module problem**
243 243  
244 -**Reason:**
245 +Reason:
245 245  
246 246  Gateway uses module with wrong frequency band
247 247  For example: 868-band gateway uses module with 915-band, which will cause the signal to be greatly reduced
248 248  
249 249  
250 -**Solution:**
251 +Solution:
251 251  
252 252  Please check whether the silkscreen of the module conflicts with the frequency you set.
253 253  
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256 256  
257 257  == **2. Frequency point problem** ==
258 258  
260 +Reason:
259 259  
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:
276 276  
277 -**Reason:**
278 -
279 279  When there are multiple gateways, the node cannot lock the frequency band.
280 280  
281 281  
282 -**Solution:**
281 +Solution:
283 283  
284 284  (((
285 285  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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571 571  [[image:image-20240129170603-7.png||height="697" width="545"]][[image:image-20240129163741-3.png||height="694" width="565"]]
572 572  
573 573  
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 +
590 590  (% style="color:blue" %)**3. Decode the info in CMD(Command prompt window)**
591 591  
592 592  LoRa packet Base64 format:  QP~/~/~/~/+AFQACZv8Hjmc8gFTAkhMzU+75 **(from LPS8-v2)**
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610 610  
611 611  **Step3: Parse the gateway raw payload.(./node_modules/.bin/lora-packet-decode ~-~-base64 QP~/~/~/~/+AFQACZv8Hjmc8gFTAkhMzU+75)**
612 612  
614 +
615 +
616 +
613 613  [[image:image-20240129192908-24.png||height="477" width="907"]]
614 614  
619 +
615 615  [[image:image-20240129192954-25.png||height="485" width="916"]]
616 616  
617 617  
623 +
624 +
625 +
626 +
627 +
618 618  = 9. Why I see uplink 0x00 periodically on the LHT65 v1.8 firmware =
619 619  
620 620