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364	364
365	365
366		-== 2.6  Frequency Plans ==
	366	+== 2.6 Installation and Maintain ==
367	367
	368	+=== 2.6.1 Before measurement ===
	369	+
368	368	(((
369		-The LLDS12 uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.
	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.
370	370	)))
	374	+)))
371	371
372	372
373		-=== 2.6.1  EU863-870 (EU868) ===
374	374
	378	+=== 2.6.2 Measurement ===
	379	+
	380	+
375	375	(((
	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	+== 2.8 Frequency Plans ==
	489	+
	490	+(((
	491	+The LSPH01 uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.
	492	+)))
	493	+
	494	+
	495	+=== 2.8.1 EU863-870 (EU868) ===
	496	+
	497	+(((
376	376	(% style="color:blue" %)**Uplink:**
377	377	)))
378	378
...	...	@@ -430,7 +430,7 @@
430	430
431	431
432	432
433		-=== 2.6.2  US902-928(US915) ===
	555	+=== 2.8.2 US902-928(US915) ===
434	434
435	435	(((
436	436	Used in USA, Canada and South America. Frequency band as per definition in LoRaWAN 1.0.3 Regional document.
...	...	@@ -447,9 +447,8 @@
447	447	* Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that sub-band
448	448	* 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)
449	449
	572	+=== 2.8.3 CN470-510 (CN470) ===
450	450
451		-=== 2.6.3 CN470-510 (CN470) ===
452		-
453	453	(((
454	454	Used in China, Default use CHE=1
455	455	)))
...	...	@@ -536,9 +536,8 @@
536	536
537	537
538	538
	660	+=== 2.8.4 AU915-928(AU915) ===
539	539
540		-=== 2.6.4 AU915-928(AU915) ===
541		-
542	542	(((
543	543	Frequency band as per definition in LoRaWAN 1.0.3 Regional document.
544	544	)))
...	...	@@ -558,7 +558,7 @@
558	558	* Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that sub-band
559	559	* 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)
560	560
561		-=== 2.6.5 AS920-923 & AS923-925 (AS923) ===
	681	+=== 2.8.5 AS920-923 & AS923-925 (AS923) ===
562	562
563	563	(((
564	564	(% style="color:blue" %)**Default Uplink channel:**
...	...	@@ -666,9 +666,8 @@
666	666
667	667
668	668
	789	+=== 2.8.6 KR920-923 (KR920) ===
669	669
670		-=== 2.6.6 KR920-923 (KR920) ===
671		-
672	672	(((
673	673	(% style="color:blue" %)**Default channel:**
674	674	)))
...	...	@@ -739,9 +739,8 @@
739	739
740	740
741	741
	861	+=== 2.8.7 IN865-867 (IN865) ===
742	742
743		-=== 2.6.7 IN865-867 (IN865) ===
744		-
745	745	(((
746	746	(% style="color:blue" %)**Uplink:**
747	747	)))
...	...	@@ -776,7 +776,6 @@
776	776
777	777
778	778
779		-
780	780	== 2.7  LED Indicator ==
781	781
782	782	The LLDS12 has an internal LED which is to show the status of different state.
...	...	@@ -844,6 +844,7 @@
844	844	* The LiDAR probe is cover by dirty things; the reading might be wrong. In this case, need to clean the probe.
845	845	* The sensor window is made by Acrylic. Don’t touch it with alcohol material. This will destroy the sensor window.
846	846
	964	+
847	847	= 4.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
848	848
849	849	(((
...	...	@@ -958,6 +958,7 @@
958	958	Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
959	959	)))
960	960
	1079	+
961	961	== 4.3  Get Firmware Version Info ==
962	962
963	963	Feature: use downlink to get firmware version.