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1		-XWiki.Xiaoling
	1	+XWiki.Bei

Content

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54	54	* Downlink to change configure
55	55	* 8500mAh Battery for long term use
56	56
57		-
58		-
59	59	== 1.3 Specification ==
60	60
61	61
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101	101	* Sleep Mode: 5uA @ 3.3v
102	102	* LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
103	103
104		-
105		-
106	106	== 1.4 Applications ==
107	107
108	108
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560	560
561	561	== 2.7 Calibration ==
562	562
	559	+Step1 : Clean probe
563	563
	561	+user can use high grade sandpaper to polish it or put in 5% hydrochloric acid for several minutes. After the metal probe looks new, users can clean it to remove hydrochloric acid or other liquids from the surface.
	562	+
	563	+Step2 : Immerse the sensor in ph buffer solution to make the sensor values stable
	564	+
564	564	(((
565	565	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).
	567	+
	568	+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
	569	+
	570	+
	571	+Step3 : The numerically stable sensors were calibrated using commands
566	566	)))
567	567
568	568	(((
569		-After stable, user can use below command to calibrate.
	575	+ User can use below command to calibrate.
570	570
571	571	(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:520px" %)
572	572	|(% style="background-color:#d9e2f3; color:#0070c0; width:120px" %)**pH buffer solution**|(% style="background-color:#d9e2f3; color:#0070c0; width:150px" %)**AT Command to calibrate**|(% style="background-color:#d9e2f3; color:#0070c0; width:150px" %)**Downlink Command**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**Read Cal Value**
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594	594	)))
595	595	)))
596	596
	603	+To use the AT COMMAND, refer to this link:
597	597
	605	+* AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
	606	+
	607	+* AT Command via UART Connection : See [[UART Connection>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H2.3UARTConnectionforSN50v3basemotherboard]].
	608	+
	609	+To use Downlink, take TTN as an example, please refer to this link:
	610	+
	611	+* LoRaWAN Downlink.  Instruction for different platforms: See [[IoT LoRaWAN Server>>url:http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
	612	+
	613	+
	614	+When the command is successfully used, the node sends a uplink.
	615	+This is the payload for uplink
	616	+
598	598	(% style="color:#037691" %)**Calibration Payload**
599	599
600	600	(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:500px" %)
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621	621	* Reply to non-confirmed packet: 14 00
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	642	+Step4：
	643	+
	644	+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
	645	+
	646	+Examples:
	647	+After using the command AT+PH=9 in 9.18ph buffer
	648	+The readout returned by the sensor in 9.18ph buffer should be pH=9
	649	+
	650	+
623	623	== 2.8 Frequency Plans ==
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625	625