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364	364
365	365
366		-== 2.6 Installation and Maintain ==
367		-
368		-=== 2.6.1 Before measurement ===
369		-
370		-(((
371		-(((
372		-If the LSPH01 has more than 7 days not use or just clean the pH probe. User should put the probe inside pure water for more than 24 hours for activation. If no put in water, user need to put inside soil for more than 24 hours to ensure the measurement accuracy.
373		-)))
374		-)))
375		-
376		-
377		-
378		-=== 2.6.2 Measurement ===
379		-
380		-
381		-(((
382		-(% style="color:#4f81bd" %)**Measurement the soil surface:**
383		-)))
384		-
385		-(((
386		-[[image:1654592946732-634.png]]
387		-)))
388		-
389		-(((
390		-Choose the proper measuring position. Split the surface soil according to the measured deep.
391		-)))
392		-
393		-(((
394		-Put pure water, or rainwater to make the soil of measurement point to moist mud. Remove rocks or hard things.
395		-)))
396		-
397		-(((
398		-Slowly insert the probe to the measure point. Don’t use large force which will break the probe. Make sure not shake when inserting.
399		-)))
400		-
401		-(((
402		-Put soil over the probe after insert. And start to measure.
403		-)))
404		-
405		-(((
406		-
407		-)))
408		-
409		-(((
410		-(% style="color:#4f81bd" %)**Measurement inside soil:**
411		-)))
412		-
413		-(((
414		-Dig a hole with diameter > 20CM.
415		-)))
416		-
417		-(((
418		-Insert the probe inside, method like measure the surface.
419		-)))
420		-
421		-
422		-
423		-=== 2.6.3 Maintain Probe ===
424		-
425		-1. (((
426		-pH probe electrode is fragile and no strong. User must avoid strong force or hitting it.
427		-)))
428		-1. (((
429		-After long time use (3~~ 6  months). The probe electrode needs to be clean; user can use high grade sandpaper to polish it or put in 5% hydrochloric acid for several minutes. After the metal probe looks like new, user can use pure water to wash it.
430		-)))
431		-1. (((
432		-Probe reference electrode is also no strong, need to avoid strong force or hitting.
433		-)))
434		-1. (((
435		-User should keep reference electrode wet while not use.
436		-)))
437		-1. (((
438		-Avoid the probes to touch oily matter. Which will cause issue in accuracy.
439		-)))
440		-1. (((
441		-The probe is IP68 can be put in water.
442		-
443		-
444		-
445		-)))
446		-
447		-== 2.7 Calibration ==
448		-
449		-(((
450		-User can do calibration for the probe. It is limited to use below pH buffer solution to calibrate: 4.00, 6.86, 9.18. When calibration, user need to clean the electrode and put the probe in the pH buffer solution to wait the value stable ( a new clean electrode might need max 24 hours to be stable).
451		-)))
452		-
453		-(((
454		-After stable, user can use below command to calibrate.
455		-)))
456		-
457		-[[image:image-20220607171149-4.png]]
458		-
459		-
460		-(% style="color:#037691" %)**Calibration Payload**
461		-
462		-(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
463		-|=(% style="width: 62.5px;" %)(((
464		-**Size (bytes)**
465		-)))|=(% style="width: 89px;" %)**1**|=(% style="width: 89px;" %)**1**|=(% style="width: 89px;" %)**1**|=(% style="width: 89px;" %)**7**|=(% style="width: 89px;" %)**1**
466		-|**Value**|(((
467		-PH4
468		-
469		-Calibrate value
470		-)))|PH6.86 Calibrate value|(((
471		-PH9.18
472		-
473		-Calibrate value
474		-)))|Reserve|(((
475		-[[Message Type>>||anchor="H2.3.6MessageType"]]
476		-
477		-Always 0x03
478		-)))
479		-
480		-User can also send 0x14 downlink command to poll the current calibration payload.
481		-
482		-[[image:image-20220607171416-7.jpeg]]
483		-
484		-
485		-* Reply to the confirmation package: 14 01
486		-* Reply to non-confirmed packet: 14 00
487		-
488		-
489		-
490	490	== 2.6  Frequency Plans ==
491	491
492	492	(((
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554	554
555	555
556	556
557		-=== 2.8.2 US902-928(US915) ===
	433	+=== 2.6.2  US902-928(US915) ===
558	558
559	559	(((
560	560	Used in USA, Canada and South America. Frequency band as per definition in LoRaWAN 1.0.3 Regional document.
...	...	@@ -571,8 +571,9 @@
571	571	* Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that sub-band
572	572	* Use the Join successful sub-band if the server doesn’t include sub-band info in the OTAA Join Accept message ( TTN v2 doesn't include)
573	573
574		-=== 2.8.3 CN470-510 (CN470) ===
575	575
	451	+=== 2.6.3 CN470-510 (CN470) ===
	452	+
576	576	(((
577	577	Used in China, Default use CHE=1
578	578	)))
...	...	@@ -659,8 +659,9 @@
659	659
660	660
661	661
662		-=== 2.8.4 AU915-928(AU915) ===
663	663
	540	+=== 2.6.4 AU915-928(AU915) ===
	541	+
664	664	(((
665	665	Frequency band as per definition in LoRaWAN 1.0.3 Regional document.
666	666	)))
...	...	@@ -680,7 +680,7 @@
680	680	* Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that sub-band
681	681	* Use the Join successful sub-band if the server doesn’t include sub-band info in the OTAA Join Accept message ( TTN v2 doesn't include)
682	682
683		-=== 2.8.5 AS920-923 & AS923-925 (AS923) ===
	561	+=== 2.6.5 AS920-923 & AS923-925 (AS923) ===
684	684
685	685	(((
686	686	(% style="color:blue" %)**Default Uplink channel:**
...	...	@@ -788,8 +788,9 @@
788	788
789	789
790	790
791		-=== 2.8.6 KR920-923 (KR920) ===
792	792
	670	+=== 2.6.6 KR920-923 (KR920) ===
	671	+
793	793	(((
794	794	(% style="color:blue" %)**Default channel:**
795	795	)))
...	...	@@ -860,8 +860,9 @@
860	860
861	861
862	862
863		-=== 2.8.7 IN865-867 (IN865) ===
864	864
	743	+=== 2.6.7 IN865-867 (IN865) ===
	744	+
865	865	(((
866	866	(% style="color:blue" %)**Uplink:**
867	867	)))
...	...	@@ -896,6 +896,7 @@
896	896
897	897
898	898
	779	+
899	899	== 2.7  LED Indicator ==
900	900
901	901	The LLDS12 has an internal LED which is to show the status of different state.
...	...	@@ -904,6 +904,7 @@
904	904	* Blink once when device transmit a packet.
905	905
906	906
	788	+
907	907	== 2.8  ​Firmware Change Log ==
908	908
909	909

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