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1		-LSPH01 -- LoRaWAN Soil pH Sensor User Manual
	1	+LSPH01-LoRaWAN Soil pH Sensor User Manual

Content

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471	471	(((
472	472	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).
473	473
474		-(% style="color:red" %)**Note: Only one ph buffer with one of the ph values needs to be calibrated during calibration. Wait for the sensor measurement value to be stable, it does not need to be the same as the ph marked by the ph buffer**
	474	+(% style="color:red" %)**Note：Only one ph buffer with one of the ph values needs to be calibrated during calibration. Wait for the sensor measurement value to be stable, it does not need to be the same as the ph marked by the ph buffer**
475	475
476	476
477	477	(% style="color:blue" %)**Step3 :**(%%)** The numerically stable sensors were calibrated using commands**
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480	480	(((
481	481	User can use below command to calibrate.
482	482
483		-(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
484		-|(% style="background-color:#4f81bd; color:white; width:120px" %)**pH buffer solution**|(% style="background-color:#4f81bd; color:white; width:150px" %)**AT Command to calibrate**|(% style="background-color:#4f81bd; color:white; width:145px" %)**Downlink Command**|(% style="background-color:#4f81bd; color:white; width:95px" %)**Read Cal Value**
	483	+(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
	484	+|(% style="background-color:#4f81bd; color:white; width:120px" %)**pH buffer solution**|(% style="background-color:#4f81bd; color:white; width:150px" %)**AT Command to calibrate**|(% style="background-color:#4f81bd; color:white; width:150px" %)**Downlink Command**|(% style="background-color:#4f81bd; color:white; width:100px" %)**Read Cal Value**
485	485	|(% style="width:149px" %)4.00|(% style="width:197px" %)AT+PHCAL=4|(% style="width:206px" %)(((
486	486	0x13 04
487	487	Reply with Calibrate payload
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521	521
522	522	(% style="color:#037691" %)**Calibration Payload**
523	523
524		-(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
	524	+(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
525	525	|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
526	526	**Size(bytes)**
527	527	)))|=(% style="width: 100px;background-color:#4F81BD;color:white" %)**1**|=(% style="width: 100px;background-color:#4F81BD;color:white" %)**1**|=(% style="width: 100px;background-color:#4F81BD;color:white" %)**1**|=(% style="width: 50px;background-color:#4F81BD;color:white" %)**7**|=(% style="width: 90px;background-color:#4F81BD;color:white" %)**1**
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536	536
537	537	User can also send 0x14 downlink command to poll the current calibration payload.
538	538
539		-(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:480px" %)
540		-|=(% style="width: 183px; background-color:#4F81BD;color:white" %)**Downlink Control Type**|=(% style="width: 55px; background-color:#4F81BD;color:white" %)FPort|=(% style="width: 93px; background-color:#4F81BD;color:white" %)**Type Code**|=(% style="width: 149px; background-color:#4F81BD;color:white" %)**Downlink payload size(bytes)**
	539	+(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:480px" %)
	540	+|=(% style="width: 183px; background-color:#4F81BD;color:white" %)**Downlink Control Type**|=(% style="width: 55px; background-color:#4F81BD;color:white" %)FPort|=(% style="width: 93px; background-color:#4F81BD;color:white" %)**Type Code**|=(% style="width: 146px; background-color:#4F81BD;color:white" %)**Downlink payload size(bytes)**
541	541	|(% style="width:183px" %)Get Calibration Version Info|(% style="width:55px" %)Any|(% style="width:93px" %)14|(% style="width:146px" %)2
542	542
543	543	* Reply to the confirmation package: 14 01
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544	544
545	545	* Reply to non-confirmed packet: 14 00
546	546
547		-(% style="color:blue" %)**Step4 : **(%%)**After the calibration is completed, its measurement results in this ph buffer solution should be consistent with the numerical value of the command used in the calibration.**
	547	+(% style="color:blue" %)**Step4：**(%%)**After the calibration is completed, its measurement results in this ph buffer solution should be consistent with the numerical value of the command used in the calibration.**
548	548
549	549	Examples:
550	550	After using the command AT+PH=9 in 9.18ph buffer
551	551	The readout returned by the sensor in 9.18ph buffer should be pH=9
552	552
553		-
554	554	== 2.8 Frequency Plans ==
555	555
556	556

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